在宽pH介质中提供强大的双原子化2D催化剂的通用平台,具有卓越的进化
Laud Anim Adofo1,2, Seon Je Kim1, Hyung-Jin Kim3
1Department of Energy Science, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
Small (Weinheim an der Bergstrasse, Germany)
|December 29, 2023
概括
这项研究引入了双原子合V:Co-ReS2作为演化反应 (HER) 的强大的电催化剂. 它在广泛的pH值范围内表现出卓越的性能和耐用性,性能优于白金组金属.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 催化剂是一种催化剂.
背景情况:
- 层层的二维过渡金属二甲基化物 (TMDs) 显示为替代组金属的演化反应 (HER) 的替代品.
- 当前的TMD催化剂在中性和性条件下表现出有限的活性,并且电极粘附性差,需要结合剂来保持稳定性.
- 为各种pH环境开发强大高效的HER电催化剂仍然是一个重大挑战.
研究的目的:
- 开发一个通用平台,用于双原子合的2D电催化剂,在广泛的pH范围内增强HER性能.
- 研究ReS2中和双的有效性,以改善催化活性和耐久性.
- 为了克服中性和性电解质中的传统TMD催化剂的局限性.
主要方法:
- 在氧化Ti薄膜上V:Co-ReS2的晶圆尺度增长,使用液相前体辅助方法.
- 在各种pH介质中对合成材料进行演化反应 (HER) 的电催化测试.
- 第一个原则计算,以阐明增强的催化活性背后的机制.
主要成果:
- 在中性和性条件下 (pH≥7),V:Co-ReS2在高电流密度 (≥100 mA cm−2) 中表现出优越的HER性能,超过类金属.
- 催化剂具有很高的耐用性,在所有测试介质中在200 mA cm−2下保持超过70小时的性能.
- 第一原则计算表明,V:Co双剂有效降低了水解离屏障,并优化了吸附能量.
结论:
- V:Co-ReS2 作为演化反应的强大和高效的电催化剂,在广泛的pH频谱中有效.
- 双原子兴奋剂策略为设计具有卓越活性和稳定性的基于TMD的先进电催化剂提供了可行的途径.
- 这项工作为 HER 催化在中性和性环境中的实际应用提供了有前途的解决方案.
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