Enhancing supercapacitive performance of hierarchical carbon by introducing extra-framework cations

Yuxiang Chen; Man Shen; Xin Fu; Hong Chang Yao; Xianming Zhang; Yunqi Liu; Xiaoying Liu; Kexin Yao

doi:10.1016/j.matlet.2019.07.072

Enhancing supercapacitive performance of hierarchical carbon by introducing extra-framework cations

Yuxiang Chen, Man Shen, Xin Fu, Hong Chang Yao, Xianming Zhang, Yunqi Liu, Xiaoying Liu, Kexin Yao

Physical Sciences and Engineering

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

We design and prepare a novel hierarchical carbonaceous electrode material (SBA-C-K-N) for supercapacitor. The combination of micro/mesoporous structure and extra-framework cations endow SBA-C-K-N with outstanding electrochemical performance, including high specific capacitance of 134.4 F g−1 at 0.5 A g−1 and ideal rate capability. Meanwhile, 97.3% of the specific capacitance is well-maintained after 1000 cycles. Surprisingly, comprehensive characterization showed extra-framework cations (K+) could boost capacitance and decrease charge-transfer resistance, which might result from pre-fixed extra-framework cations decreased interfacial barrier between electrode surface and electrolyte and sped up mass transport between both phases.

Original language	English (US)
Pages (from-to)	416-419
Number of pages	4
Journal	Materials Letters
Volume	253
DOIs	https://doi.org/10.1016/j.matlet.2019.07.072
State	Published - Jul 19 2019

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors gratefully thank the financial supports of the National Natural Science Foundation of China (Grant no. 21576034).

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10.1016/j.matlet.2019.07.072

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title = "Enhancing supercapacitive performance of hierarchical carbon by introducing extra-framework cations",

abstract = "We design and prepare a novel hierarchical carbonaceous electrode material (SBA-C-K-N) for supercapacitor. The combination of micro/mesoporous structure and extra-framework cations endow SBA-C-K-N with outstanding electrochemical performance, including high specific capacitance of 134.4 F g−1 at 0.5 A g−1 and ideal rate capability. Meanwhile, 97.3% of the specific capacitance is well-maintained after 1000 cycles. Surprisingly, comprehensive characterization showed extra-framework cations (K+) could boost capacitance and decrease charge-transfer resistance, which might result from pre-fixed extra-framework cations decreased interfacial barrier between electrode surface and electrolyte and sped up mass transport between both phases.",

author = "Yuxiang Chen and Man Shen and Xin Fu and Yao, {Hong Chang} and Xianming Zhang and Yunqi Liu and Xiaoying Liu and Kexin Yao",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The authors gratefully thank the financial supports of the National Natural Science Foundation of China (Grant no. 21576034).",

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doi = "10.1016/j.matlet.2019.07.072",

language = "English (US)",

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T1 - Enhancing supercapacitive performance of hierarchical carbon by introducing extra-framework cations

AU - Chen, Yuxiang

AU - Shen, Man

AU - Fu, Xin

AU - Yao, Hong Chang

AU - Zhang, Xianming

AU - Liu, Yunqi

AU - Liu, Xiaoying

AU - Yao, Kexin

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The authors gratefully thank the financial supports of the National Natural Science Foundation of China (Grant no. 21576034).

PY - 2019/7/19

Y1 - 2019/7/19

N2 - We design and prepare a novel hierarchical carbonaceous electrode material (SBA-C-K-N) for supercapacitor. The combination of micro/mesoporous structure and extra-framework cations endow SBA-C-K-N with outstanding electrochemical performance, including high specific capacitance of 134.4 F g−1 at 0.5 A g−1 and ideal rate capability. Meanwhile, 97.3% of the specific capacitance is well-maintained after 1000 cycles. Surprisingly, comprehensive characterization showed extra-framework cations (K+) could boost capacitance and decrease charge-transfer resistance, which might result from pre-fixed extra-framework cations decreased interfacial barrier between electrode surface and electrolyte and sped up mass transport between both phases.

AB - We design and prepare a novel hierarchical carbonaceous electrode material (SBA-C-K-N) for supercapacitor. The combination of micro/mesoporous structure and extra-framework cations endow SBA-C-K-N with outstanding electrochemical performance, including high specific capacitance of 134.4 F g−1 at 0.5 A g−1 and ideal rate capability. Meanwhile, 97.3% of the specific capacitance is well-maintained after 1000 cycles. Surprisingly, comprehensive characterization showed extra-framework cations (K+) could boost capacitance and decrease charge-transfer resistance, which might result from pre-fixed extra-framework cations decreased interfacial barrier between electrode surface and electrolyte and sped up mass transport between both phases.

UR - http://hdl.handle.net/10754/656778

UR - https://linkinghub.elsevier.com/retrieve/pii/S0167577X19310584

UR - http://www.scopus.com/inward/record.url?scp=85070082355&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2019.07.072

DO - 10.1016/j.matlet.2019.07.072

M3 - Article

SN - 0167-577X

VL - 253

SP - 416

EP - 419

JO - Materials Letters

JF - Materials Letters

ER -

Enhancing supercapacitive performance of hierarchical carbon by introducing extra-framework cations

Abstract

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