典型文献
N,O co-doped porous carbon with rich pseudocapacitive groups exhibiting superior energy density in an acidic 2.4 V Li2SO4 electrolyte
文献摘要：
Designing a carbon material with a unique composition and surface functional groups for offering high specific capacity in a wide voltage window is of great significance to improve the energy density for the supercapacitor in a cheap and eco-friendly aqueous electrolyte.Herein,we develop an efficient strategy to synthesize a N,O co-doped hierarchically porous carbon(NODPC-1.0)with moderate specific surface area and pore volume as well as rich heteroatoms using a deep eutectic solvent(DES)as an activator.It is found that NODPC-1.0 with a large proportion of pseudocapacitive functional groups(pyrrole-N,pyridine-N and carbonyl-quinone)can work stable in an acidic 2 mol/L Li2SO4(pH 2.5)electrolyte,exhibiting specific capacities of 375 and 186 F/g at the current densities of 1.0 and 100 A/g,respectively.Also,the assembled symmetric capacitor using the NODPC-1.0 as the active material and 2 mol/L acidic Li2SO4(pH 2.5)as the electrolyte shows an outstanding energy density of 74.4 Wh/kg at a high power density of 1.44 kW/kg under a broad voltage window(2.4 V).Relevant comparative experiments indicate that H+of the acidic aqueous electrolyte plays a crucial part in enhancement the specific capacity,and the abundant pseudocapacitive functional groups on the surface of the NODPC-1.0 sample play the key role in the improvement of electrochemical cycle stability under a broad voltage window.
文献关键词：
中图分类号：
作者姓名：
Xiao Wang;Kaixiang Zou;Weijing Wu;Yuanfu Deng;Guohua Chen
作者机构：
The Key Laboratory of Fuel Cell for Guangdong Province,School of Chemistry and Chemical Engineering,South China University of Technology,Guangzhou 510640,China;Electrochemical Energy Engineering Research Center of Guangdong Province,South China University of Technology,Guangzhou 510640,China;Department of Mechanical Engineering,The Hong Kong Polytechnic University,Hong Kong,China
文献出处：
引用格式：
[1]Xiao Wang;Kaixiang Zou;Weijing Wu;Yuanfu Deng;Guohua Chen-.N,O co-doped porous carbon with rich pseudocapacitive groups exhibiting superior energy density in an acidic 2.4 V Li2SO4 electrolyte)[J].中国化学快报（英文版）,2022(08):3883-3888
A类：
NODPC,H+of
B类：
doped,porous,rich,pseudocapacitive,groups,exhibiting,superior,energy,density,acidic,Li2SO4,electrolyte,Designing,material,unique,composition,surface,functional,offering,high,specific,capacity,wide,voltage,window,is,great,significance,supercapacitor,cheap,eco,friendly,aqueous,Herein,develop,efficient,strategy,synthesize,hierarchically,moderate,area,pore,volume,well,heteroatoms,using,deep,eutectic,solvent,DES,activator,It,found,that,large,proportion,pyrrole,pyridine,carbonyl,quinone,work,stable,capacities,current,densities,respectively,Also,assembled,symmetric,active,shows,outstanding,Wh,power,kW,under,broad,Relevant,comparative,experiments,indicate,plays,crucial,part,enhancement,abundant,sample,key,improvement,electrochemical,cycle,stability
AB值：
0.499119
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。
