Owing to safety issue and low energy density of liquid lithium-ion batteries(LIBs),all-solid-state lithium metal batteries(ASLMBs)with unique all-solid-state electrolytes(SEs)have attracted wide attentions.This arises...Owing to safety issue and low energy density of liquid lithium-ion batteries(LIBs),all-solid-state lithium metal batteries(ASLMBs)with unique all-solid-state electrolytes(SEs)have attracted wide attentions.This arises mainly from the advantages of the SEs in the suppression of lithium dendrite growth,long cycle life,and broad working temperature range,showing huge potential applications in electronic devices,electric vehicles,smart grids,and biomedical devices.However,SEs suffer from low lithiumion conductivity and low mechanical integrity,slowing down the development of practical ASLMBs.Nanostructure engineering is of great efficiency in tuning the structure and composition of the SEs with improved lithium-ion conductivity and mechanical integrity.Among various available technologies for nanostructure engineering,electrospinning is a promising technique because of its simple operation,cost-effectiveness,and efficient integration with different components.In this review,we will first give a simple description of the electrospinning process.Then,the use of electrospinning technique in the synthesis of various SEs is summarized,for example,organic nanofibrous matrix,organic/inorganic nanofibrous matrix,and inorganic nanofibrous matrix combined with other components.The current development of the advanced architectures of SEs through electrospinning technology is also presented to provide references and ideas for designing high-performance ASLMBs.Finally,an outlook and further challenges in the preparation of advanced SEs for ASLMBs through electrospinning engineering are given.展开更多
Quasi-solid-state electrolytes that possess high ionic conductivity,excellent interface stability,and low interfacial resistance,are required for practical solid-state batteries.Herein,a heterogeneous quasi-solid-stat...Quasi-solid-state electrolytes that possess high ionic conductivity,excellent interface stability,and low interfacial resistance,are required for practical solid-state batteries.Herein,a heterogeneous quasi-solid-state hybrid electrolyte(QSHE)with a robust lithium-ion transport layer composed of Li_(1+x)Al_(x)Ti_(2−x)(PO_(4))_(3)(LATP)nanoparticles(NPs)at the anode/electrolyte interface was fabricated using electrospun nanofibers as a skeleton via a facile in situ polymerization approach.The QSHE exhibits a high ionic conductivity(0.98 mS cm^(−1)),a wide electrochemical window(4.76 V vs.Li/Li^(+)),and favorable compatibility with lithium metal(maintaining stability over 2000 h in a symmetrical cell)at room temperature.When coupled with a Li|LiFePO_(4)battery,the QSHE enables the battery to retain 95.4%of its capacity after 300 cycles at 2 C.Moreover,the atomic force microscopy verifies the high Young’s modulus of the LATP-dominated bottom layer,while numerical simulation validates the effective distribution of lithium ions at the interface facilitated by LATP NPs,hence contributing to dendrite-free lithium plating/stripping morphology.This straightforward strategy could pave the way for the development of high-performance and interfacially stable lithium metal batteries.展开更多
Li metal anodes(LMAs)has attracted extensive research interest because of its extremely high theoretical capacity(3860 m Ah/g)at low redox potential(-3.04 V vs.standard hydrogen electrode).However,the extremely high c...Li metal anodes(LMAs)has attracted extensive research interest because of its extremely high theoretical capacity(3860 m Ah/g)at low redox potential(-3.04 V vs.standard hydrogen electrode).However,the extremely high chemical reactivity and the intrinsic“hostless”nature of LMAs bring about serious dendritic growth and dramatic volume change during the plating/strapping process,thus resulting in poor Coulombic efficiency,short lifespan,and severe safety concerns.Of various strategies,the construction of three-dimensional carbonaceous scaffolds for LMAs can substantially reduce the local current density,inhibit Li dendrite growth,and accommodate volume variation.Electrospinning is a simple yet effective strategy to fabricate carbon nanofibers(CNFs),which have been regarded as promising skeletons for LMAs,owing to their large surface areas,good electrical conductivity,and high porosity.In this Mini Review,we briefly introduce the fabrication of CNFs using electrospinning and the modification of CNFs.We highlight the recent advances in electrospun CNF skeletons for LMAs,including pure CNF and CNF-based composite scaffolds.Finally,we discuss the remaining challenges of electrospun CNF scaffolds for LMAs and provide possible solutions to push forward the advancement in this field.展开更多
Utilizing plasmonic nano-particles/structures for solar water evaporation has aroused increasing interest; however, large-scale methods are desired to boost the efficiency and improve the practicality of solar steam g...Utilizing plasmonic nano-particles/structures for solar water evaporation has aroused increasing interest; however, large-scale methods are desired to boost the efficiency and improve the practicality of solar steam generation. We developed a membrane-supported floating solar steam generation system based on graphene oxide and a multiscale plasmonic nanostructure; the latter is a micrometer-sized colloidosome that was assembled from hollow and porous Ag/Au nanocubes. By taking advantage of multiscale plasmonic coupling of the particles, an extremely high solar thermal conversion efficiency up to 92% at 10 kW·m^-2 （with a water evaporation rate reaching 12.96 kg·m^-2·h^-1） can be achieved. The TiO2 nanoparticle-modified floating system is also capable of high-efficiency dye degradation in organic-polluted water, rendering such a membrane system recyclable and scalable for practical and versatile solar-driven generation of clean water.展开更多
As a promising energy storage device,sodium-ion batteries(SIBs)have received continuous attention due to their low-cost and environmental friendliness.However,the sluggish kinetics of Na ion usually makes SIBs hard to...As a promising energy storage device,sodium-ion batteries(SIBs)have received continuous attention due to their low-cost and environmental friendliness.However,the sluggish kinetics of Na ion usually makes SIBs hard to realize desirable electrochemical performance when compared to lithium-ion batteries(LIBs).The key to addressing this issue is to build up nanostructured materials which enable fast Na-ion insertion/extraction.One-dimensional(1D)nanocarbons have been considered as both the anode and the matrix to support active materials for SIB electrodes owing to their high electronic conductivity and excellent mechanical property.Because of their large surface areas and short ion/electron difusion path,the synthesized electrodes can show good rate performance and cyclic stability during the charge/discharge processes.Electrospinning is a simple synthetic technology,featuring inexpensiveness,easy operation and scalable production,and has been largely used to fabricate 1D nanostructured composites.In this review,we frst give a simple description of the electrospinning principle and its capability to construct desired nanostructures with diferent compositions.Then,we discuss recent developments of carbon-based hybrids with desired structural and compositional characteristics as the electrodes by electrospinning engineering for SIBs.Finally,we identify future research directions to realize more breakthroughs on electrospun electrodes for SIBs.展开更多
The indiscriminate utilization of nondegradable polyethylene terephthalate(PET)-based products has triggered serious environmental pollution that has to be resolved vigorously.A simple synthesis of N-doped carbon nano...The indiscriminate utilization of nondegradable polyethylene terephthalate(PET)-based products has triggered serious environmental pollution that has to be resolved vigorously.A simple synthesis of N-doped carbon nanotubes from recycled PET(NCNTs_(r-PET))was developed by a nitric acid-assisted hydrothermal method.Experimental results and theoretical calculations show that the intrinsic defects in CNTs_(r-PET)would induce N-doping by NH_(3)generated from nitric acid during the hydrothermal process,thus producing the NCNTs_(r-PET).The life cycle assessment proves that the developed method for N-doped CNTs using r-PET as the carbon source is more environmentally friendly than the conventional chemical vapor deposition using acetylene as the carbon source.As a typical application,the NCNTs_(r-PET)delivered an impressive sodium storage capacity with an ultralong lifespan.This work not only provides a new route to upcycling waste plastics into valuable carbonaceous materials in an ecofriendly manner,but also reveals a basic understanding of the N-doping mechanism in carbonaceous materials.展开更多
Electrospun nanofibers(NFs)have shown excellent properties including high porosity,abundant active sites,controllable diameter,uniform and designable structure,high mechanical strength,and superior resistance to exter...Electrospun nanofibers(NFs)have shown excellent properties including high porosity,abundant active sites,controllable diameter,uniform and designable structure,high mechanical strength,and superior resistance to external destruction,which are ideal nanoreactors for in situ characterizations.Among various techniques,in situ transmission electron microscopy(TEM)has enabled operando observation at the atomic level due to its high temporal and spatial resolution combined with excellent sensitivity,which is of great importance for rational materials design and performance improvement.In this review,the basic knowledge of in situ TEM techniques and the advantages of electrospun nanoreactors for in situ TEM characterization are first introduced.The recent development in electrospun nanoreactors for studying the physical properties,structural evolution,phase transition,and formation mechanisms of materials using in situ TEM is then summarized.The electrochemical behaviors of carbon nanofibers(CNFs),metal/metal oxide NFs,and solidelectrolyte interphase for different rechargeable batteries are highlighted.Finally,challenges faced by electrospun nanoreactors for in situ TEM characterization are discussed and potential solutions are proposed to advance this field.展开更多
A nanoplasmonic hydrogen-sensing system based on palladium/silver nanosheets （Pd/Ag NSs） was developed and used for sensitive assessment of the hydrogen evolution reaction （HER） in colloid solutions. As a model HE...A nanoplasmonic hydrogen-sensing system based on palladium/silver nanosheets （Pd/Ag NSs） was developed and used for sensitive assessment of the hydrogen evolution reaction （HER） in colloid solutions. As a model HER system, the semiconductor CdS/CdSe core/shell quantum dot （QD）-based hydrogen-producing colloidal system was used, and the HER performances of QDs with two different surface coatings were assessed in this study. In the sensing system, the photocatalytically generated hydrogen reacts with Pd/Ag NSs, resulting in a gradual red-shift of localized surface plasmon resonance, which to a certain degree is almost linearly proportional to the amount of hydrogen generated. Such a nanoplasmonic hydrogen sensing platform would be useful as an alternative for optical assessment and fast selection of a highly efficient and cost-effective solar hydrogen generation system for practical applications.展开更多
基金financially supported by the National Key Research and Development Project of China for Demonstration of Integrated Utilization of Solid Waste in Distinctive Convergent Areas of Southeast Light Industry Building Materials(2019YFC1904500)the National Natural Science Foundation of China(Grant No.81770222)+4 种基金the Social Development Industry University Research Cooperation Project from the Department of Science and Technology in Fujian(2018Y4002)support by the Award Program for Fujian Minjiang Scholar Professorshipsupport from the Australian Research Grants Council(DP130104648)support from the NSERC Discovery Grant(NSERC RGPIN-2020-04463)McGill Start-Up Grant。
文摘Owing to safety issue and low energy density of liquid lithium-ion batteries(LIBs),all-solid-state lithium metal batteries(ASLMBs)with unique all-solid-state electrolytes(SEs)have attracted wide attentions.This arises mainly from the advantages of the SEs in the suppression of lithium dendrite growth,long cycle life,and broad working temperature range,showing huge potential applications in electronic devices,electric vehicles,smart grids,and biomedical devices.However,SEs suffer from low lithiumion conductivity and low mechanical integrity,slowing down the development of practical ASLMBs.Nanostructure engineering is of great efficiency in tuning the structure and composition of the SEs with improved lithium-ion conductivity and mechanical integrity.Among various available technologies for nanostructure engineering,electrospinning is a promising technique because of its simple operation,cost-effectiveness,and efficient integration with different components.In this review,we will first give a simple description of the electrospinning process.Then,the use of electrospinning technique in the synthesis of various SEs is summarized,for example,organic nanofibrous matrix,organic/inorganic nanofibrous matrix,and inorganic nanofibrous matrix combined with other components.The current development of the advanced architectures of SEs through electrospinning technology is also presented to provide references and ideas for designing high-performance ASLMBs.Finally,an outlook and further challenges in the preparation of advanced SEs for ASLMBs through electrospinning engineering are given.
基金supported by the National Natural Science Foundation of China(No.22179022,No.22109023,and No.22209027)the Industry-University Research Joint Innovation Project of Fujian Province(No.2021H6006)+2 种基金the FuXiaQuan National Independent Innovation Demonstration Zone Collaborative Innovation Platform(No.2022-P-027)the Youth Innovation Fund of Fujian Province(No.2021J05043 and No.2022J05046)the Award Program for Fujian Minjiang Scholar Professorship.
文摘Quasi-solid-state electrolytes that possess high ionic conductivity,excellent interface stability,and low interfacial resistance,are required for practical solid-state batteries.Herein,a heterogeneous quasi-solid-state hybrid electrolyte(QSHE)with a robust lithium-ion transport layer composed of Li_(1+x)Al_(x)Ti_(2−x)(PO_(4))_(3)(LATP)nanoparticles(NPs)at the anode/electrolyte interface was fabricated using electrospun nanofibers as a skeleton via a facile in situ polymerization approach.The QSHE exhibits a high ionic conductivity(0.98 mS cm^(−1)),a wide electrochemical window(4.76 V vs.Li/Li^(+)),and favorable compatibility with lithium metal(maintaining stability over 2000 h in a symmetrical cell)at room temperature.When coupled with a Li|LiFePO_(4)battery,the QSHE enables the battery to retain 95.4%of its capacity after 300 cycles at 2 C.Moreover,the atomic force microscopy verifies the high Young’s modulus of the LATP-dominated bottom layer,while numerical simulation validates the effective distribution of lithium ions at the interface facilitated by LATP NPs,hence contributing to dendrite-free lithium plating/stripping morphology.This straightforward strategy could pave the way for the development of high-performance and interfacially stable lithium metal batteries.
基金support from the National Natural Science Foundation of China(Nos.22179022 and 22109023)the Industry-University-Research Joint Innovation Project of Fujian Province(No.2021H6006)+1 种基金the Award Program for Fujian Minjiang Scholar Professorshipthe Talent Fund Program of Fujian Normal University。
文摘Li metal anodes(LMAs)has attracted extensive research interest because of its extremely high theoretical capacity(3860 m Ah/g)at low redox potential(-3.04 V vs.standard hydrogen electrode).However,the extremely high chemical reactivity and the intrinsic“hostless”nature of LMAs bring about serious dendritic growth and dramatic volume change during the plating/strapping process,thus resulting in poor Coulombic efficiency,short lifespan,and severe safety concerns.Of various strategies,the construction of three-dimensional carbonaceous scaffolds for LMAs can substantially reduce the local current density,inhibit Li dendrite growth,and accommodate volume variation.Electrospinning is a simple yet effective strategy to fabricate carbon nanofibers(CNFs),which have been regarded as promising skeletons for LMAs,owing to their large surface areas,good electrical conductivity,and high porosity.In this Mini Review,we briefly introduce the fabrication of CNFs using electrospinning and the modification of CNFs.We highlight the recent advances in electrospun CNF skeletons for LMAs,including pure CNF and CNF-based composite scaffolds.Finally,we discuss the remaining challenges of electrospun CNF scaffolds for LMAs and provide possible solutions to push forward the advancement in this field.
基金This work was financially supported by the National Natural Science Foundation of China （Nos. 21475125 and 21175125）, the Hundred Talents Program of the Chinese Academy of Sciences, and the State Key Laboratory of Electroanalyfical Chemistry （No. 110000R387）.
文摘Utilizing plasmonic nano-particles/structures for solar water evaporation has aroused increasing interest; however, large-scale methods are desired to boost the efficiency and improve the practicality of solar steam generation. We developed a membrane-supported floating solar steam generation system based on graphene oxide and a multiscale plasmonic nanostructure; the latter is a micrometer-sized colloidosome that was assembled from hollow and porous Ag/Au nanocubes. By taking advantage of multiscale plasmonic coupling of the particles, an extremely high solar thermal conversion efficiency up to 92% at 10 kW·m^-2 （with a water evaporation rate reaching 12.96 kg·m^-2·h^-1） can be achieved. The TiO2 nanoparticle-modified floating system is also capable of high-efficiency dye degradation in organic-polluted water, rendering such a membrane system recyclable and scalable for practical and versatile solar-driven generation of clean water.
文摘As a promising energy storage device,sodium-ion batteries(SIBs)have received continuous attention due to their low-cost and environmental friendliness.However,the sluggish kinetics of Na ion usually makes SIBs hard to realize desirable electrochemical performance when compared to lithium-ion batteries(LIBs).The key to addressing this issue is to build up nanostructured materials which enable fast Na-ion insertion/extraction.One-dimensional(1D)nanocarbons have been considered as both the anode and the matrix to support active materials for SIB electrodes owing to their high electronic conductivity and excellent mechanical property.Because of their large surface areas and short ion/electron difusion path,the synthesized electrodes can show good rate performance and cyclic stability during the charge/discharge processes.Electrospinning is a simple synthetic technology,featuring inexpensiveness,easy operation and scalable production,and has been largely used to fabricate 1D nanostructured composites.In this review,we frst give a simple description of the electrospinning principle and its capability to construct desired nanostructures with diferent compositions.Then,we discuss recent developments of carbon-based hybrids with desired structural and compositional characteristics as the electrodes by electrospinning engineering for SIBs.Finally,we identify future research directions to realize more breakthroughs on electrospun electrodes for SIBs.
基金National Natural Science Foundation of China,Grant/Award Numbers:22109023,22179022,22209027Industry-University-Research Joint Innovation Project of Fujian Province,Grant/Award Number:2021H6006+2 种基金FuXiaQuan National Independent Innovation Demonstration Zone Collaborative Innovation Platform,Grant/Award Number:2022-P-027Youth Innovation Fund of Fujian Province,Grant/Award Numbers:2021J05043,2022J05046Science and Technology。
文摘The indiscriminate utilization of nondegradable polyethylene terephthalate(PET)-based products has triggered serious environmental pollution that has to be resolved vigorously.A simple synthesis of N-doped carbon nanotubes from recycled PET(NCNTs_(r-PET))was developed by a nitric acid-assisted hydrothermal method.Experimental results and theoretical calculations show that the intrinsic defects in CNTs_(r-PET)would induce N-doping by NH_(3)generated from nitric acid during the hydrothermal process,thus producing the NCNTs_(r-PET).The life cycle assessment proves that the developed method for N-doped CNTs using r-PET as the carbon source is more environmentally friendly than the conventional chemical vapor deposition using acetylene as the carbon source.As a typical application,the NCNTs_(r-PET)delivered an impressive sodium storage capacity with an ultralong lifespan.This work not only provides a new route to upcycling waste plastics into valuable carbonaceous materials in an ecofriendly manner,but also reveals a basic understanding of the N-doping mechanism in carbonaceous materials.
基金the National Natural Science Foundation of China,Grant/Award Numbers:22179022,22109023,22209027,22209097the Industry-University-Research Joint Innovation Project of Fujian Province,Grant/Award Number:2021H6006+2 种基金the FuXiaQuan National Independent Innovation Demonstration Zone Collaborative Innovation Platform,Grant/Award Number:2022-P-027the Youth Innovation Fund of Fujian Province,Grant/Award Numbers:2021J05043,2022J05046the Award Program for Fujian Minjiang Scholar Professorship,the Talent Fund Program of Fujian Normal University and Shenzhen Science and Technology Program,Grant/Award Numbers:JCYJ20220530142806015,JCYJ20220818101008018。
文摘Electrospun nanofibers(NFs)have shown excellent properties including high porosity,abundant active sites,controllable diameter,uniform and designable structure,high mechanical strength,and superior resistance to external destruction,which are ideal nanoreactors for in situ characterizations.Among various techniques,in situ transmission electron microscopy(TEM)has enabled operando observation at the atomic level due to its high temporal and spatial resolution combined with excellent sensitivity,which is of great importance for rational materials design and performance improvement.In this review,the basic knowledge of in situ TEM techniques and the advantages of electrospun nanoreactors for in situ TEM characterization are first introduced.The recent development in electrospun nanoreactors for studying the physical properties,structural evolution,phase transition,and formation mechanisms of materials using in situ TEM is then summarized.The electrochemical behaviors of carbon nanofibers(CNFs),metal/metal oxide NFs,and solidelectrolyte interphase for different rechargeable batteries are highlighted.Finally,challenges faced by electrospun nanoreactors for in situ TEM characterization are discussed and potential solutions are proposed to advance this field.
基金This work was financially supported by the National Natural Science Foundation of China （Nos. 21475125 and 21175125）, the Hundred Talents Program of the Chinese Academy of Sciences, and the State Key Laboratory of Electroanalytical Chemistry （No. 110000R387）.
文摘A nanoplasmonic hydrogen-sensing system based on palladium/silver nanosheets （Pd/Ag NSs） was developed and used for sensitive assessment of the hydrogen evolution reaction （HER） in colloid solutions. As a model HER system, the semiconductor CdS/CdSe core/shell quantum dot （QD）-based hydrogen-producing colloidal system was used, and the HER performances of QDs with two different surface coatings were assessed in this study. In the sensing system, the photocatalytically generated hydrogen reacts with Pd/Ag NSs, resulting in a gradual red-shift of localized surface plasmon resonance, which to a certain degree is almost linearly proportional to the amount of hydrogen generated. Such a nanoplasmonic hydrogen sensing platform would be useful as an alternative for optical assessment and fast selection of a highly efficient and cost-effective solar hydrogen generation system for practical applications.
