Effects of buffer agents on hydrogen adsorption and desorption at/within activated carbon for the negative electrode of aqueous asymmetric supercapacitors
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- 作者：Hsiu-Chuan Chien ; Tzu-Ho Wu ; Muniyandi Rajkumar ; Chi-Chang Hu ; cchu@che.nthu.edu.tw" class="auth_mail" title="E-mail the corresponding author
- 关键词：hydrogen adsorption/desorption ; activated carbon ; buffer agents ; local pH change ; aqueous asymmetric supercapacitors
- 刊名：Electrochimica Acta
- 出版年：2016
- 出版时间：1 July 2016
- 年：2016
- 卷：205
- 期：Complete
- 页码：1-7
- 全文大小：1728 K
文摘
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H adsorption causes local pH increase and negatively shifts the double-layer potential window.
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The local pH variation at AC/electrolyte interface can be controlled via adding buffer agents.
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H adsorption potential on AC in buffer electrolytes follows the Nernstian dependence.
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The pseudocapacitive reversibility of H adsorption/desorption at/within AC is too poor.