标题:Sulfuration of NiV-layered double hydroxide towards novel supercapacitor electrode with enhanced performance
作者:Zhou, Peng; Wang, Cong; Liu, Yuanyuan; Wang, Zeyan; Wang, Peng; Qin, Xiaoyan; Zhang, Xiaoyang; Dai, Ying; Whangbo, Myung-Hwan; Huang 更多
作者机构:[Zhou, Peng; Wang, Cong; Liu, Yuanyuan; Wang, Zeyan; Wang, Peng; Qin, Xiaoyan; Zhang, Xiaoyang; Whangbo, Myung-Hwan; Huang, Baibiao] Shandong Univ, St 更多
通讯作者:Liu, Yuanyuan;Liua, YY;Huang, BB
通讯作者地址:[Liua, YY; Huang, BB]Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Shandong, Peoples R China.
来源:CHEMICAL ENGINEERING JOURNAL
出版年:2018
卷:351
页码:119-126
DOI:10.1016/j.cej.2018.06.064
关键词:Ultrathin and porous structure; NiV-S; Ion exchange; Asymmetric; supercapacitor
摘要:NiV-LDH as a novel electrode material has rarely been investigated in the energy storage field. Herein, novel ultrathin NiV-LDH was designed and synthesized, which displays high specific capacitance but poor stability. To further improve the stability, NiV-LDH was transformed to the sulfide named NiV-S through an ion exchange reaction (S2- replaces OH-). The obtained NiV-S maintains the ultrathin (5 nm in thickness) and porous structure, and displays higher specific capacitance (2270.4 F g(-1 )at 2 A g(-1)), compared to NiV-LDH (1502 F g(-1) at 2 A g(-1)). What is more improtant is that the cycling stability of NiV-S is much higher than NiV-LDH, (91.9% retention after 10,000 cycles for NiV-S vs only 63% retention after 5000 cycles for NiV-LDH). The asymmetric supercapacitor assembled using ultrathin porous NiV-S as the positive electrode and activated carbon (AC) as the negative electrode was found to deliver a maximum energy density of 51 Wh kg(-1) at a power density of 1600 W kg(-1) and 12 kW kg(-1) M 23.7 W h kg(-1). In addition, 98.5% of the initial capacitance retains after 10,000 continuous cycling.
收录类别:EI;SCOPUS;SCIE
WOS核心被引频次:2
Scopus被引频次:2
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048769837&doi=10.1016%2fj.cej.2018.06.064&partnerID=40&md5=fce8474528cf92ff67628982e9c4fd91
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