典型文献
Low-temperature and high-voltage planar micro-supercapacitors based on anti-freezing hybrid gel electrolyte
文献摘要：
Micro-supercapacitors(MSCs)are considered as highly competitive power sources for miniaturized elec-tronics.However,narrow voltage window and poor anti-freezing properties of MSCs in conventional aqueous electrolytes lead to low energy density and limited environmental adaption.Herein,we report the construction of low-temperature and high-energy-density MSCs based on anti-freezing hybrid gel electrolytes(HGE)through introducing ethylene glycol(EG)additives into aqueous LiCl electrolyte.Since EG partially destroys hydrogen bond network among water molecules,the HGE exhibits maximum electrochemical stability window of 2.7 V and superior anti-freezing features with a glass transition tem-perature of-62.8℃.Further,the optimized MSCs using activated carbon microelectrodes possess impressive volumetric capacitance of 28.9 F cm-3 and energy density of 10.3 mWh cm-3 in the voltage of 1.6 V,2.6 times higher than MSCs tested in 1.2 V.Importantly,the MSCs display 68.3％capacitance retention even at-30℃compared to the value at 25℃,and ultra-long cyclability with 85.7％of initial capacitance after 15,000 times,indicating extraordinary low-temperature performance.Besides,our devices offer favorable flexibility and modular integration.Therefore,this work provides a general strat-egy of realizing flexible,safe and anti-freezing microscale power sources,holding great potential towards subzero-temperature microelectronic applications.
文献关键词：
中图分类号：
作者姓名：
Manning Chen;Xiaoyu Shi;Xiaolei Wang;Hanqing Liu;Sen Wang;Caixia Meng;Yu Liu;Liangzhu Zhang;Yuanyuan Zhu;Zhong-Shuai Wu
作者机构：
College of Chemistry and Environment,Shenyang University of Technology,Shenyang 110870,Liaoning,China;State Key Laboratory of Catalysis,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,Liaoning,China;University of Chinese Academy of Sciences,Beijing 100049,China;Dalian National Laboratory for Clean Energy,Chinese Academy of Sciences,Dalian 116023,Liaoning,China
文献出处：
引用格式：
[1]Manning Chen;Xiaoyu Shi;Xiaolei Wang;Hanqing Liu;Sen Wang;Caixia Meng;Yu Liu;Liangzhu Zhang;Yuanyuan Zhu;Zhong-Shuai Wu-.Low-temperature and high-voltage planar micro-supercapacitors based on anti-freezing hybrid gel electrolyte)[J].能源化学,2022(09):195-202
A类：
HGE,subzero
B类：
Low,temperature,voltage,planar,supercapacitors,anti,freezing,hybrid,gel,Micro,MSCs,considered,highly,competitive,power,sources,miniaturized,tronics,However,narrow,window,poor,properties,conventional,aqueous,electrolytes,lead,low,energy,density,limited,environmental,adaption,Herein,report,construction,through,introducing,ethylene,glycol,EG,additives,into,LiCl,Since,partially,destroys,hydrogen,bond,network,among,water,molecules,exhibits,maximum,electrochemical,stability,superior,features,glass,transition,Further,optimized,using,activated,carbon,microelectrodes,possess,impressive,volumetric,capacitance,mWh,times,higher,than,tested,Importantly,display,retention,even,compared,value,ultra,long,cyclability,initial,after,indicating,extraordinary,performance,Besides,devices,offer,favorable,flexibility,modular,integration,Therefore,this,provides,general,strat,egy,realizing,flexible,safe,microscale,holding,great,potential,towards,microelectronic,applications
AB值：
0.620509
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