典型文献
Implementation of a choline bis(trifluoromethylsulfonyl)imide aqueous electrolyte for low temperature EDLCs enabled by a cosolvent
文献摘要：
We report a carbon/carbon capacitor based on micro/mesoporous carbon electrodes with cost-ettective and eco-friendly aqueous choline bis(trifluoromethylsulfonyl)imide(ChTFSI)electrolyte with a cosolvent enabling low-temperature operation down to-30℃.For this purpose,a MgO-templated hierarchical carbon(MP98B)with an average mesopore diameter of 3.5 nm was prepared by pyrolysis of magnesium citrate hydrate at 900℃.To reach lower temperatures,the melting point and viscosity of the aqueous electrolyte were reduced by mixing water(W)with an organic solvent(methanol,M,or isopropanol,I)of high dielectric constant and low viscosity.5 mol kg-1(5 m)ChTFSI in an optimized volume fraction of cosolvent,M0.75W0.25.and I0.75W0.25,showed the highest conductivity;the higher conductivity in M0.75W0.25(22.8 and 3.1 mS cm-1 at 20 and-30℃,respectively)than in I0.75W0.25(8.5 and 0.5 mS cm-1 at 20 and-30℃,respectively)is attributed to the lower viscosity of the M0.75W0.25 solution.The electrochemical stability window(ESW)of 5 m ChTFSI in M0.75W0.25 and I0.75W0.25(1.6 V)on an MP98B electrode was determined by applying the S-method.Meanwhile,by adjusting the mass ratio of the two electrodes,a MP98B/MP98B capacitor using the 5 m electrolyte in M0.75W0.25 could operate with a good life span up to 1.6 V while exhibiting a better charge propagation,greater specific capaci-tance,and higher specific energy than in I0.75W0.25.
文献关键词：
中图分类号：
作者姓名：
Zhuanpei Wang;Fran?ois Béguin
作者机构：
Institute of Chemistry and Technical Electrochemistry,Poznan University of Technology,Berdychowo 4,60-965 Poznan,Poland
文献出处：
引用格式：
[1]Zhuanpei Wang;Fran?ois Béguin-.Implementation of a choline bis(trifluoromethylsulfonyl)imide aqueous electrolyte for low temperature EDLCs enabled by a cosolvent)[J].能源化学,2022(07):84-94
A类：
trifluoromethylsulfonyl,cosolvent,ettective,ChTFSI,MP98B,75W0
B类：
Implementation,choline,bis,imide,aqueous,electrolyte,EDLCs,enabled,by,We,report,carbon,capacitor,micro,mesoporous,electrodes,cost,eco,friendly,enabling,operation,down,For,this,purpose,MgO,templated,hierarchical,average,mesopore,diameter,was,prepared,pyrolysis,magnesium,citrate,hydrate,To,reach,lower,temperatures,melting,point,viscosity,were,reduced,mixing,water,organic,methanol,isopropanol,dielectric,constant,optimized,volume,fraction,M0,I0,showed,highest,conductivity,higher,mS,respectively,attributed,solution,electrochemical,stability,window,ESW,determined,applying,method,Meanwhile,adjusting,mass,two,using,could,operate,good,life,span,up,exhibiting,better,charge,propagation,greater,specific,tance,energy
AB值：
0.43915
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
