期刊
ACS ENERGY LETTERS
卷 5, 期 9, 页码 2873-2880出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.0c01290
关键词
-
类别
资金
- China Scholarship Council
- Agence Nationale de la Recherche (Labex STORE-EX)
- Sichuan Science and Technology Program [2020ZDZX0005]
Two-dimensional Ti3C2Tx MXenes have been extensively studied as pseudocapacitive electrode materials. This Letter aims at providing further insights into the charge storage mechanism of the Ti3C2Tx MXene electrode in the acidic electrolyte by combining experimental and simulation approaches. Our results show that the presence of H2O molecules between the MXene layers plays a critical role in the pseudocapacitive behavior, providing a pathway for proton transport to activate the redox reaction of the Ti atoms. Also, thermal annealing of the samples at different temperatures suggests that the presence of the confined H2O molecules is mainly controlled by the surface termination groups. These findings pave the way for alternative strategies to enhance the high-rate performance of MXenes electrodes by optimizing their surface termination groups.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据