典型文献
Maximizing the ion accessibility and high mechanical strength in nanoscale ion channel MXene electrodes for high-capacity zinc-ion energy storage
文献摘要：
Two-dimensional transition-metal carbides(MXenes)have superhydrophilic surfaces and superior metal conductivity,making them competitive in the field of electrochemical energy storage.However,MXenes with layered structures are easily stackable,which reduces the ion accessibility and transport paths,thus limiting their electrochemical performance.To fully exploit the advantages of MXenes in electrochemical energy storage,this study reports the etching of large-sized MXene into nanosheets with nanoscale ion channels via a chemical oxidation method.While the resulting ion-channel MXene electrodes retain the excellent mechanical strength and electrical conductivity of large-sized MXene nanosheets,they can effectively shorten the ion transport distance and improve the overall electrochemical activity.The fab-ricated self-healing MXene-based zinc-ion microcapacitor exhibits a high areal specific capacitance(532.8 mF cm-2)at the current density of 2 mA cm-2,a low self-discharge rate(4.4 mV h-1),and high energy density of 145.1 uWh cm-2 at the power density of 2800 uW cm-2.The proposed nanoscale ion channel structure provides an alternative strategy for constructing high-performance electrochemical energy storage electrodes,and has great application prospects in the fields of electrochemical energy storage and flexible electronics.
文献关键词：
中图分类号：
作者姓名：
Yongfa Cheng;Yimei Xie;Shuwen Yan;Zunyu Liu;Yanan Ma;Yang Yue;Jianbo Wang;Yihua Gao;Luying Li
作者机构：
Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074,China;Information Materials and Intelligent Sensing Laboratory of Anhui Province,Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education,Institutes of Physical Science and Information Technology,Anhui University,Hefei 230601,China;International School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China;School of Physics and Technology,Center for Electron Microscopy,Key Laboratory of Artificial Micro-and Nano-Structures of Ministry of Education and the Institute for Advanced Studies,Wuhan University,Wuhan 430072,China
文献出处：
引用格式：
[1]Yongfa Cheng;Yimei Xie;Shuwen Yan;Zunyu Liu;Yanan Ma;Yang Yue;Jianbo Wang;Yihua Gao;Luying Li-.Maximizing the ion accessibility and high mechanical strength in nanoscale ion channel MXene electrodes for high-capacity zinc-ion energy storage)[J].科学通报（英文版）,2022(21):2216-2224
A类：
stackable,microcapacitor,uWh
B类：
Maximizing,accessibility,high,mechanical,strength,nanoscale,electrodes,capacity,zinc,energy,storage,Two,dimensional,transition,metal,carbides,MXenes,have,superhydrophilic,surfaces,superior,conductivity,making,them,competitive,electrochemical,However,layered,structures,easily,which,reduces,transport,paths,thus,limiting,their,performance,To,fully,exploit,advantages,this,study,reports,etching,large,sized,into,nanosheets,channels,via,oxidation,method,While,resulting,retain,excellent,electrical,they,can,effectively,shorten,distance,improve,overall,activity,fab,ricated,self,healing,exhibits,areal,specific,capacitance,mF,current,density,mA,low,discharge,mV,power,proposed,provides,alternative,strategy,constructing,has,great,application,prospects,fields,flexible,electronics
AB值：
0.524248
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