普鲁士蓝(PB)和普鲁士蓝类似物(PBAs)凭借着可调的三维开放结构,以及易于制备、成本低等优势,被视为极具发展潜力的钠离子电池(SIBs)的正极材料之一。PBAs的结构具有多样性,不同结构呈现出独特的物理化学性质,并表现出长期稳定性和高倍...普鲁士蓝(PB)和普鲁士蓝类似物(PBAs)凭借着可调的三维开放结构,以及易于制备、成本低等优势,被视为极具发展潜力的钠离子电池(SIBs)的正极材料之一。PBAs的结构具有多样性,不同结构呈现出独特的物理化学性质,并表现出长期稳定性和高倍率性能。然而PB和PBAs在实际应用过程中仍然面临着一些问题,例如Fe(CN)6空位、结晶水、有毒副产物、不可逆的相变以及Mn3+的姜–泰勒(Jahn-Teller)效应等。其中界面不稳定性和晶体结构坍塌是导致PB和PBAs容量快速衰减的关键因素。为了改善上述问题,常见的优化策略主要包括界面优化和晶体优化,界面优化主要有材料涂层技术和增强电极–电解液界面等;晶体优化策略主要有使用络合剂,通入惰性气体和添加还原剂,加入氯化钠,过渡金属掺杂等。因此,寻找合适的策略提高普鲁士蓝基钠离子电池的电化学性能对于促进规模储能的发展具有重要意义。Prussian blue (PB) and Prussian blue analogs (PBAs) are regarded as one of the cathode materials for sodium-ion batteries (SIBs) with great potential due to their tunable three-dimensional open structures, as well as their ease of preparation and low cost. The structures of PBAs are diversified, and the different structures present unique physicochemical properties, and exhibit long-term stability and high multiplicity performance. However, PB and PBAs still face some problems in the practical application process, such as Fe (CN)6 vacancy, crystal water, toxic byproducts, irreversible phase transitions and the Jahn-Teller effect of Mn3+. Among them, interfacial instability and crystal structure collapse are the key factors leading to the rapid capacity decay of PBs and PBAs. In order to improve the above problems, common optimization strategies mainly include interface optimization and crystal optimization. Interface optimization mainly includes material coating technology and enhanced electrode-electrolyte interface, etc. Crystal optimization strategies mainly include the use of complexing agent, inert gas and reducing agent, sodium chloride, transition metal doping, etc. Therefore, it is imperative to devise appropriate strategies for enhancing the electrochemical performance of PBAs-based SIBs in order to facilitate the advancement of large-scale energy storage.展开更多
文摘普鲁士蓝(PB)和普鲁士蓝类似物(PBAs)凭借着可调的三维开放结构,以及易于制备、成本低等优势,被视为极具发展潜力的钠离子电池(SIBs)的正极材料之一。PBAs的结构具有多样性,不同结构呈现出独特的物理化学性质,并表现出长期稳定性和高倍率性能。然而PB和PBAs在实际应用过程中仍然面临着一些问题,例如Fe(CN)6空位、结晶水、有毒副产物、不可逆的相变以及Mn3+的姜–泰勒(Jahn-Teller)效应等。其中界面不稳定性和晶体结构坍塌是导致PB和PBAs容量快速衰减的关键因素。为了改善上述问题,常见的优化策略主要包括界面优化和晶体优化,界面优化主要有材料涂层技术和增强电极–电解液界面等;晶体优化策略主要有使用络合剂,通入惰性气体和添加还原剂,加入氯化钠,过渡金属掺杂等。因此,寻找合适的策略提高普鲁士蓝基钠离子电池的电化学性能对于促进规模储能的发展具有重要意义。Prussian blue (PB) and Prussian blue analogs (PBAs) are regarded as one of the cathode materials for sodium-ion batteries (SIBs) with great potential due to their tunable three-dimensional open structures, as well as their ease of preparation and low cost. The structures of PBAs are diversified, and the different structures present unique physicochemical properties, and exhibit long-term stability and high multiplicity performance. However, PB and PBAs still face some problems in the practical application process, such as Fe (CN)6 vacancy, crystal water, toxic byproducts, irreversible phase transitions and the Jahn-Teller effect of Mn3+. Among them, interfacial instability and crystal structure collapse are the key factors leading to the rapid capacity decay of PBs and PBAs. In order to improve the above problems, common optimization strategies mainly include interface optimization and crystal optimization. Interface optimization mainly includes material coating technology and enhanced electrode-electrolyte interface, etc. Crystal optimization strategies mainly include the use of complexing agent, inert gas and reducing agent, sodium chloride, transition metal doping, etc. Therefore, it is imperative to devise appropriate strategies for enhancing the electrochemical performance of PBAs-based SIBs in order to facilitate the advancement of large-scale energy storage.
