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氮硫共掺杂多孔碳材料的制备及其在锂硫电池中的应用 被引量:4
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作者 赵桂香 Wail Hafiz Zaki Ahmed 朱福良 《电化学》 CAS CSCD 北大核心 2021年第6期614-623,共10页
锂硫电池因其较高的理论容量和对环境友好等优势被视为极具发展潜力的储能装置,但是多硫化物的穿梭效应极大地限制了锂硫电池的实际应用。本文以葡萄糖为碳源,离子液体为氮源和硫源,KCl和ZnCl_(2)为模板剂,KOH为活化剂,通过热解工艺合... 锂硫电池因其较高的理论容量和对环境友好等优势被视为极具发展潜力的储能装置,但是多硫化物的穿梭效应极大地限制了锂硫电池的实际应用。本文以葡萄糖为碳源,离子液体为氮源和硫源,KCl和ZnCl_(2)为模板剂,KOH为活化剂,通过热解工艺合成了氮硫共掺杂多孔碳(NSPC)。XPS和极性吸附实验表明N、S杂原子成功引入并且提高了碳材料对多硫化物的吸附能力,有效缓解多硫化物的穿梭效应,而较高的比表面积(1290.67 m^(2)·g^(-1))有助于提高硫负载量。负载70.1wt.%的硫后(S@NSPC)作为锂硫电池的正极材料表现出了良好的电化学性能。在167.5 mA·g^(-1)的电流密度下S@NSPC的首次放电容量为1229.2 mAh·g^(-1),远高于S@PC的861.6 mAh·g^(-1),且S@NSPC循环500圈后容量为328.1 mAh·g^(-1)。当电流密度从3350 mA·g^(-1)恢复至167.5 mA·g^(-1)时,可逆容量达到首圈放电比容量的80%,几乎恢复至其初始值。 展开更多
关键词 锂硫电池 多孔碳 N、S共掺杂
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Experimental study on the improvement of insomnia model mice's symptoms by Sanwei Anmian Decoction and its disassembled prescription
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作者 Yu-Kun Chen Fan Yun +8 位作者 Xiao-Fan Wang Shi-Ya Feng Han Yang Shu-Guang Wei Nuo-Nan Zhang gui-xiang zhao Yu Kong Ke Dong Jin-Chan Xia 《Food Therapy and Health Care》 2020年第4期176-188,共13页
Background:Insomnia is a sleep disorder,which seriously affects people's physical and mental health.Our experimental study will further explain the efficacy and mechanism of the traditional Chinese medicine prescr... Background:Insomnia is a sleep disorder,which seriously affects people's physical and mental health.Our experimental study will further explain the efficacy and mechanism of the traditional Chinese medicine prescription Sanwei Anmian Decoction as well as the single drug treatment for insomnia,and provide scientific basis for TCM decoction to cure more insomnia patients.Methods:42 mices,half male and half female,were randomly divided into 7 groups,6 in each group,Blank group,Model group,Positive group,Sanwei Anmian Decoction group(abbreviated as Sanwei group),Suanzaoren group,Maidong group,Yuanzhi group.Intraperitoneal injection(ip)of PCPA 350 mg·kg^-1 in other groups except Blank group to establish a mice model of insomnia.On the next day after the successful modeling,10ml·kg^-1 corresponding decoction was given to Sanwei group,Suanzaoren group,Yuanzhi group and Maidong group respectively,0.8mg·kg^-1 estazolam for Positive group,Blank group and the Model group with the same amount of normal saline,three times a day for two days.The body weight and the number of autonomous activities of mice were observed.The sleep rate,sleep latency and sleep time were recorded after the last administration,and the contents of serum 5-hydroxytryptamine(5-HT)and dopamine(DA)were detected.Results:The changes of hair yellowing,alarm,food loss and weight loss in mice showed that the model was successful.After the last administration,compared with the Model group and the Blank group,the weight of mice in Sanwei Anmian Decoction and each disassembled prescription group increased,the autonomous activity decreased,the number of mice fell asleep increased,the concentration of 5-HT in serum increased and the concentration of DA decreased,P<0.01,which was statistically significant.Conclusions:Sanwei Anmian Decoction can effectively improve the symptoms of PCPA insomnia mice model.For single drug,Suanzaoren Decoction has the most obvious effect on the treatment of insomnia. 展开更多
关键词 Sanwei Anmian Decoction Chlorophenylalanine INSOMNIA MICE Experimental study
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