工程界面水微环境加速质子转移为酸氧进化在高潜力的高潜力
Xiaolong Liang1, Ke Xu1, Hengkun Yu1
1State Key Laboratory of Fine Chemicals, Dalian University of Technology 116024 Dalian China.
Chemical science
|March 12, 2026
概括
工程界面水环境加速了酸氧演化反应 (OER) 催化反应的质子转移动力学. 一个CdO-Co3-x Cd x O4异构结构通过破坏键和降低能量障碍来增强OER活动.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
背景情况:
- 电双层中的质子转移 (PT) 动力学是酸氧演化反应 (OER) 中的一个关键瓶.
- 高电位条件在工业应用中加剧了这些动力限制.
研究的目的:
- 设计界面水微环境以增强酸性OER的PT动力学.
- 研究一种异构结构催化剂中内置电场对水结构和PT率的影响.
主要方法:
- 制造一个具有内置电场的CdO-Co3-x Cd x O4异构结构.
- 在现场减弱总反射表面增强红外吸收光谱 (ATR-SEIRAS).
- 动态同位素效应 (KIE) 分析和分子动力学 (AIMD) 模拟.
主要成果:
- 内置的电场破坏了接口的键网络,有利于孤立的水分子.
- 这种无序的水结构降低了水重定向的能量屏障,加速了PT动力学.
- 工程催化剂在1.70VvsRHE时,与纯Co3O4相比,内在的OER活动增加了数量级.
结论:
- 接口H键网络的合理工程是高电位电催化剂的决定性策略.
- 通过内置的电场破坏水结构有效地克服了PT的动力限制.
- 这种方法为OER设计高效的电催化剂提供了新的途径.
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