典型文献
Kinetic regulation of MXene with water-in-LiCl electrolyte for high-voltage micro-supercapacitors
文献摘要：
MXenes are one of the key materials for micro-supercapacitors(MSCs),integrating miniaturized energy-storage components with microelectronics.However,the energy densities of MSCs are greatly hampered by MXenes'narrow working potential window(typically＜0.6 V)in aqueous electrolytes.Here,we report the fabrication of high-voltage MXene-MSCs through the efficient regulation of reaction kinetics in 2D Ti3C2Tx MXene microelectrodes using a water-in-LiCl(WIL,20 m LiCl)salt gel electrolyte.Importantly,the intrinsic energy-storage mechanism of MXene microelectrodes in WIL,which is totally different from traditional electrolytes(1 m LiCl),was revealed through in situ and ex situ characterizations.We validated that the suppression of MXene oxidation at high anodic potential occurred due to the high content of WWIL regulating anion intercalation in MXene electrodes,which effectively broadened the voltage window of MXene-MSCs.Remarkably,the symmetric planar MXene-MSCs presented a record operating voltage of 1.6 V,resulting in an exceptionally high volumetric energy density of 31.7 mWh cm-3.With the ultra-high ionic conductivity(69.5 mS cm-1)and ultralow freezing point(-57℃)of the WIL gel electrolyte,our MSCs could be operated in a wide temperature range of-40 to 60℃,and worked for a long duration even at-40℃,demonstrative of its practicality in extreme environments.
文献关键词：
中图分类号：
作者姓名：
Yuanyuan Zhu;Shuanghao Zheng;Pengfei Lu;Jiaxin Ma;Pratteek Das;Feng Su;Hui-Ming Cheng;Zhong-Shuai Wu
作者机构：
State Key Laboratory of Catalysis,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China;Dalian National Laboratory for Clean Energy,Chinese Academy of Sciences,Dalian 116023,China;University of Chinese Academy of Sciences,Beijing 100049,China;Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;Faculty of Materials Science and Engineering/Institute of Technology for Carbon Neutrality,Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518055,China;Shenzhen International Graduate School,Tsinghua University,Shenzhen 518055,China
文献出处：
引用格式：
[1]Yuanyuan Zhu;Shuanghao Zheng;Pengfei Lu;Jiaxin Ma;Pratteek Das;Feng Su;Hui-Ming Cheng;Zhong-Shuai Wu-.Kinetic regulation of MXene with water-in-LiCl electrolyte for high-voltage micro-supercapacitors)[J].国家科学评论（英文版）,2022(07):90-98
A类：
WIL,WWIL,demonstrative
B类：
Kinetic,regulation,water,LiCl,high,voltage,supercapacitors,MXenes,are,key,materials,MSCs,integrating,miniaturized,energy,storage,components,microelectronics,However,densities,greatly,hampered,by,narrow,working,potential,window,typically,aqueous,electrolytes,Here,report,fabrication,through,efficient,reaction,kinetics,2D,Ti3C2Tx,microelectrodes,using,salt,gel,Importantly,intrinsic,mechanism,which,totally,different,from,traditional,was,revealed,situ,characterizations,We,validated,that,suppression,oxidation,anodic,occurred,due,content,regulating,anion,intercalation,effectively,broadened,Remarkably,symmetric,planar,presented,record,operating,resulting,exceptionally,volumetric,density,mWh,With,ionic,conductivity,mS,ultralow,freezing,point,our,could,be,operated,wide,temperature,range,worked,long,duration,even,its,practicality,extreme,environments
AB值：
0.561241
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