All-Ti3C2TA:MXene Based Flexible On-chip Microsupercapacitor Array  

作　　者：LI La CHEN Di SHEN Guozhen 

机构地区：[1]State Key Laboratory for Superlattices and Microstructures,Institute of Semiconductors,Chinese Academy of Sciences&Center of Materials Science and Optoelectronic Engineering,University of Chinese Academy of Sciences,Beijing 100083,P.R.China [2]School of Mathematics and Physics,University of Science and Technology'Beijing,Beijing 100083,P.R.China

出　　处：《Chemical Research in Chinese Universities》2020年第4期694-698,共5页高等学校化学研究（英文版）

基　　金：Supported by the National Natural Science Foundation of China(Nos.51672308,51972025,61888102).

摘　　要：Flexible on-chip microsupercapacitors(MSCs)are highly desired for integrated wearable or portable elec-tromics due to their advantages of small size,high power density,easy integration,long lifespan,high security,and tlexibility.The output voltage of MSCs can be improved by designing MSC arrays,which could further expand their application fields.In this work,we proposed a facile laser direct cutting method to prepare an on-chip flexible MSC array using TiC,T,MXene as both current collector and electrode materials.The designed MSC in PVAH2SO4 all-solid-state gel electrolvte exhibits a large volume/areal capacitance of 770.72 F/cm^3(46.24 mF/cm^2)at a scan rate of 20 mV/s,a high energy density of 68.51 mWh/cm^3 at a power density of 6.16 W/cm^3,excellent cveling stability with capacitance retention of 98.50%after 10000 charge/discharge cvcles.The MSC also shows superior flexibility and stabilitv even after repetition of charge/discharge cvcles under the convex and concave bending states.In addition.the assembled MSC array(4 in series)provides a high voltage of 3.2 V,which could easily power a purple light-emitting diode more than 10 min,demonstrating its potential application in integrated portable/wearable devices.

关 键 词：Ti3C2Tx MXene Microsupercapacitor Laser cutting Flexible energy storage 

分 类 号：TM53[电气工程—电器]