阳极
甲醇燃料
甲醇
催化作用
化学
多相催化
化学工程
异质结
材料科学
纳米技术
电极
物理化学
有机化学
光电子学
工程类
作者
Xiwen Chang,Yanjiang Wang,Xue‐Qian Wu,Ya‐Pan Wu,Shuang Li,Yunling Liu,Yong-Shuang Li,Dongsheng Li
标识
DOI:10.1016/j.jssc.2023.124035
摘要
Direct methanol fuel cells (DMFCs) are considered one of the most promising energy conversion devices due to their environmentally friendly and high-energy density features. However, the sluggish anode kinetics of the methanol oxidation reaction (MOR) acts as a bottleneck in the DMFCs system. Herein, a series of MOF-based heterogeneous electrocatalysts (NiWO4/MOF-74-x, Ni3V2O8/MOF-74-x) is constructed via a coordination-driven self-assembly strategy to enhance the catalytic property of the MOR. The heterogeneous interface between MOF-74 and Ni compounds is built by the Ni–O coordination interaction, which provides fast charge transfer and mass diffusion efficiency. Therefore, the optimal catalyst NiWO4/MOF-74 (3) exhibits excellent MOR activity and operation durability with a peak current density of 28.58 mA·cm-2. This work is expected to inspire the design of more efficient MOF-based heterogeneous electrocatalysts for MOR and other energy conversion applications.
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