电解质
氢氧化钾
活性炭
无机化学
化学
氯
氢氧化铵
氯化物
锌
超级电容器
钾
氯化铵
电极
碳纤维
氢氧化物
电化学
材料科学
有机化学
吸附
物理化学
复合材料
复合数
作者
Hiroyuki Fujimoto,Masaaki Yoshikawa,Masayuki Morita,Zempachi Ogumi,Takeshi Abe
出处
期刊:Journal of The Electrochemical Society
[The Electrochemical Society]
日期:2023-11-01
卷期号:170 (11): 110502-110502
标识
DOI:10.1149/1945-7111/ad05e6
摘要
Porous carbon materials prepared with different activation methods were evaluated as positive electrodes for zinc-ion capacitors. Higher capacities were obtained with chemically activated carbons than with steam-activated carbons, with KOH-activated carbon showing the highest capacity. Furthermore, the dependence of charge–discharge characteristics on electrolyte was explored using seven different electrolyte types. Gas evolution was observed during the charging reaction in alkaline electrolytes such as potassium hydroxide and tetraethylammonium hydroxide, but no gas generation was observed in acidic electrolytes. In addition, the discharge capacity tended to be higher for chlorine- ion-containing electrolytes such as zinc chloride and ammonium chloride.
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