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题名: Meso- and micro- porous composite carbons derived from humic acid for supercapacitors
作者: Yin, Jiao; Zhang, Duanyi; Zhao, Jiquan; Wang, Xiaolei; Zhu, Hui; Wang, Chuanyi
关键词: composite ; porous carbons ; humic acid ; supercapacitors
刊名: Electrochimica Acta
发表日期: 2014
DOI: 10.1016/j.electacta.2014.05.115
卷: 136, 期:8, 页:504-512
收录类别: SCI
资助者: National Natural Science Foundation of China ;Xin Jiang Joint Fund of the National Natural Science Foundation of China ;"Western Light" Foundation of Chinese Academy of Sciences ;Young Creative Sci-Tech Talents Cultivation Project of Xinjiang Uyghur Autonomous Region;"Hundred Talents" program of Chinese Academy of Sciences
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.
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内容类型: 期刊论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/3754
Appears in Collections:环境科学与技术研究室_期刊论文

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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

Recommended Citation:
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.
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