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Title of Journal: J Solid State Electrochem

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Abbravation: Journal of Solid State Electrochemistry

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Springer Berlin Heidelberg

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1433-0768

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Lignitederived mesoporous N and Oenriched carbo

Authors: Siqi Zhu Qiuli Chen Yaoyao Shi Zhiyi Chen Ruiqi Bao Lu Zhou Linrui Hou Kwun Nam Hui Changzhou Yuan
Publish Date: 2015/12/14
Volume: 20, Issue: 3, Pages: 713-723
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Abstract

In the work we successfully fabricate mesoporous N and Oenriched carbon NOC with adjustable porosity and specific surface area SSA by using lowcost lignite as a precursor coupled with general KOH or ZnCl2 activation for electrochemical capacitors ECs Physicochemical and electrochemical characterizations reveal that chemical activating agents influence significantly upon the specific morphology pore structure and electrochemical performance of the resultant products Strikingly KOHactivated NOC NOCK sheets are endowed with high SSA of ∼1257 m2 g−1 large pore volume of 13 cm3 g−1 and optimized pore size of ∼3 nm rendering its electrochemical capacitance superior to those of NOC and ZnCl2activated NOC NOCZ in 6 M KOH Thanks to its rich mesoporosity coupled with large electroactive SSA and heteroatom doping N of ∼48 at and O of ∼233 at effect the NOCK electrode yields even better electrochemical behaviors in 1 M H2SO4 than those in 6 M KOH

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