Sustainable Low-Cost Green Electrodes with High Volumetric Capacitance for Aqueous Symmetric Supercapacitors with High Energy Density
Sustainable Low-Cost Green Electrodes with High Volumetric Capacitance for Aqueous Symmetric Supercapacitors with High Energy Density
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用于高能量密度水性对称超级电容器的具有高体积电容的可持续低成本绿色电极
DOI:
10.1021/acssuschemeng.5b01417
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发表时间:
2016-01
影响因子:
8.4
通讯作者:
吴世华
中科院分区:
文献类型:
--
作者:
吴世华
Low-cost and high performance electrode materials are critical for rapid development and wide applications of supercapacitors. Herein, we report a cost-effective approach to prepare nitrogen-doped active carbon/graphene (N-AC/Gr) composites using renewable corn straw and soy protein as precursors, respectively. The as-prepared composites have moderate specific surface areas in a range of 1233.6–1412.9 m2 g–1 and abundant porosity. Furthermore, the composites demonstrate high single electrode gravimetric and volumetric specific capacitances of 378.9 F g–1 and 257.7 F cm–3 at 0.05 A g–1 and of 321.1 F g–1 and 213.2 F cm–3 at 20 A g–1, accounting for an excellent rate capability with a retention of 66.4% in 6 M KOH electrolyte. The assembled N-AC/Gr-based aqueous symmetric supercapacitor exhibits superior cycling durability with 93% retention after 10,000 cycles at 2 A g–1 and delivers a high energy density of 13.1 Wh kg–1 (11.1 Wh L–1) with a power density of 12.5 W kg–1 (10.6 W L–1).
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影响因子:
7.2
作者:
Kaisheng Xia;Xi-ke Tian;Shunxin Fei;Kun You
通讯作者:
Kaisheng Xia;Xi-ke Tian;Shunxin Fei;Kun You
DOI:
10.1016/j.colsurfa.2012.06.042
发表时间:
2012-10
期刊:
Colloids and Surfaces A
影响因子:
--
作者:
Wei Xiong;Mingxian Liu;Lihua Gan;Yaokang Lv;Zijie Xu;Zhixian Hao;Longwu Chen
通讯作者:
Longwu Chen
影响因子:
3.7
作者:
Xiao‐Qing Yang;Dingcai Wu;Xiaomei Chen;R. Fu
通讯作者:
Xiao‐Qing Yang;Dingcai Wu;Xiaomei Chen;R. Fu
影响因子:
9.2
作者:
Lv, Yaokang;Gan, Lihua;Wright, Dominic S.
通讯作者:
Wright, Dominic S.
影响因子:
15
作者:
HUMMERS, WS;OFFEMAN, RE
通讯作者:
OFFEMAN, RE