典型文献
Correlation between self-discharge behavior and heteroatoms over doped carbon sheets for enhanced pseudocapacitance
文献摘要：
For electric double layer supercapacitors,carbon materials originating from the purely physical energy-storage mechanism limit the improvement in the capabilities of charge storage.To solve this problem,doping heteroatoms into carbon skeleton is a promising&charming strategy for enhancing electrochem-ical performance by providing the extra pseudocapacitance.However,the self-discharge behavior of such heteroatom-doped supercapacitors has been a challenging issue for a long time.Here,the porous carbon nanosheets with a tunable total content of heteroatoms are chosen as a demo to systemically decouple the correlation between the total content of heteroatoms and the specific capacitance as well as the self-discharge behavior.The capacitance changes in a range of 164-331 Fg-1@1Ag-1 with the increased total contents of doped heteroatom,strongly dependent on and sensitive to the total content of heteroa-toms.The voltage retention rate and capacitance retention rate for the porous carbon nanosheets with a tunable total content of heteroatoms completely present a quick decline tendency as the increase in the content of heteroatoms,changing from 58％to 34％and 74％to 39％,respectively,indicative of a linear neg-ative relationship.More importantly,the self-discharge mechanisms are elaborately explored and follow the combination of activation-and diffusion-controlled Faradic reactions.This work illustrates the diverse impacts of the doped heteroatoms on the electrochemical performance of supercapacitors,cov-ering specific capacitance and self-discharge behavior,and highlights the importance of balancing the contents of doped heteroatoms in energy storage fields.
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作者姓名：
Kunlun Liu;Chang Yu;Yuanyang Xie;Wei Guo;Jinhe Yu;Lin Ni;Zhao Wang;Rong Fu;Jieshan Qiu
作者机构：
State Key Lab of Fine Chemicals,School of Chemical Engineering,Liaoning Key Lab for Energy Materials and Chemical Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China
文献出处：
引用格式：
[1]Kunlun Liu;Chang Yu;Yuanyang Xie;Wei Guo;Jinhe Yu;Lin Ni;Zhao Wang;Rong Fu;Jieshan Qiu-.Correlation between self-discharge behavior and heteroatoms over doped carbon sheets for enhanced pseudocapacitance)[J].能源化学,2022(09):291-298
A类：
heteroa
B类：
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AB值：
0.507047
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