Facile synthesis of microporous carbon for supercapacitors with a LiNO3 electrolyte

Facile synthesis of microporous carbon for supercapacitors with a LiNO3 electrolyte
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使用 LiNO3 电解质轻松合成用于超级电容器的微孔碳

DOI:
10.1016/j.carbon.2016.01.004
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发表时间:
2016-04
期刊:
影响因子:
10.9
通讯作者:
Zhao Xia
Zhao Xia
中科院分区:
材料科学2区
文献类型:
--
作者:
Luo HeMing;Yang YanFei;Mu Bo;Chen YanZheng;Zhang JianQiang;Zhao Xia

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报道了一种通过邻苯二甲酸钾在惰性气氛中碳化直接合成互连微孔碳的简便方法。所获得的微孔碳具有高比表面积(1118 m2g−1),67%的孔体积归因于微孔,这是超级电容器电极的理想选择。根据相应的电导率选择不同浓度的LiNO3电解质来评估水电解质在超级电容器中的使用。研究了互连微孔碳在 6 M KOH 和 1–5 M LiNO3 电解质中的电化学性能。结果表明,微孔碳作为超级电容器的电极材料可以提供最佳的电化学性能。此外,电化学研究表明,微孔碳在 3 M LiNO3 电解质中表现出较宽的电压操作窗口。此外,即使在 1.6 V 电压下循环 5000 次后,仍保留 86.2% 的电容。
A facile method for the direct synthesis of interconnected microporous carbon via carbonization of potassium acid phthalate in inert atmosphere is reported. The as-obtained microporous carbon exhibited a high specific surface area (1118 m2g−1) and 67% of the pore volume was attributed to microporosity, which are ideal for electrodes of supercapacitors. LiNO3electrolytes of different concentrations were selected according to their corresponding conductivities to evaluate the use of aqueous electrolytes in supercapacitors. The electrochemical performance of the interconnected microporous carbon in 6 M KOH and 1–5 M LiNO3electrolytes was investigated. The results showed that the microporous carbon could deliver optimal electrochemical properties as an electrode material for supercapacitors. In addition, the electrochemical investigation showed that the microporous carbon exhibited a broad voltage operational window in 3 M LiNO3electrolyte. Furthermore, 86.2% of the capacitance was retained even after 5000 cycles at 1.6 V.
通过轻松合成高性能超级电容器的 3D 海绵状纳米多孔碳:酒石酸盐的直接碳化
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