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Meso- and micro- porous composite carbons derived from humic acid for supercapacitors
Yin, Jiao; Zhang, Duanyi; Zhao, Jiquan; Wang, Xiaolei; Zhu, Hui; Wang, Chuanyi
2014
发表期刊Electrochimica Acta
ISSN134686
卷号136期号:8页码:504-512
摘要Herein, humic acid (HA), a kind of biomass (natural polymer), is firstly adopted as a raw material for synthesis of activated carbons (ACs) via a high-temperature activation procedure with KOH. Their porous textures as well as surface groups are fully characterized by N2 sorption isothermal analysis, SEM, TEM, XPS and IR, respectively. The HA-derived ACs show very high specific surface areas (up to 2990.32 m2g-1). Furthermore, electrochemical studies such as cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and galvanostatic charge/discharge (GCD) are carried out to evaluate their specific capacitance and rate capability. It reveals that HA-derived ACs possess high specific capacitance (350 Fg -1) at a scan rate of 5 mV s-1 in 1 M H2SO 4. Moreover, supercapacitors based on HA-derived ACs demonstrate good cycling stability in which the 92% initial capacitance has been retained even after 9000 cycle numbers at a high current density of 1 A g-1.
关键词Composite Porous Carbons Humic Acid Supercapacitors
DOI10.1016/j.electacta.2014.05.115
收录类别SCI
WOS记录号WOS:000340320800061
引用统计
被引频次:43[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/3754
专题环境科学与技术研究室
作者单位Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Xinjiang, Peoples R China;Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China;Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Lab Ecomat & Sustainable Technol LEMST, Urumqi 830011, Xinjiang, Peoples R China;Hebei Univ Technol, Sch Chem Engn & Technol, Tianjin 300130, Peoples R China
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Yin, Jiao,Zhang, Duanyi,Zhao, Jiquan,et al. Meso- and micro- porous composite carbons derived from humic acid for supercapacitors[J]. Electrochimica Acta,2014,136(8):504-512.
APA Yin, Jiao,Zhang, Duanyi,Zhao, Jiquan,Wang, Xiaolei,Zhu, Hui,&Wang, Chuanyi.(2014).Meso- and micro- porous composite carbons derived from humic acid for supercapacitors.Electrochimica Acta,136(8),504-512.
MLA Yin, Jiao,et al."Meso- and micro- porous composite carbons derived from humic acid for supercapacitors".Electrochimica Acta 136.8(2014):504-512.
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