[W-O]化COP的吸附部位调节,在高电流密度下促进氧化合进化
Ge Meng1,2, Ziwei Chang1, Libo Zhu1,2
1Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, People's Republic of China.
Nano-micro letters
|September 14, 2023
概括
这项研究引入了一种新的双功能催化剂,通过氧化反应 (HzOR) 和演化反应 (HER) 来有效生产. 催化剂表现出卓越的性能,并使素燃料电池系统能够用于无电气的气发电.
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:
- 氧化反应 (HzOR) 和演化反应 (HER) 提供低成本的生产.
- 在优化氨酸电氧化和水解离的催化剂相互作用方面仍然存在挑战.
研究的目的:
- 为高效的HzOR和HER开发一种双功能催化剂.
- 研究[W-O]组在增强催化活性中的作用.
- 为了演示一个由素燃料电池驱动的气生产系统.
主要方法:
- 与[W-O]组集成的CoP纳米片的制造.
- HER 和 HzOR 性能的电化学表征.
- 组装和测试用于生产H2的直接素燃料电池.
主要成果:
- [W-O]功能化的CoP纳米片对HER (185.60 mV在1000 mA cm−2) 和HzOR (78.99 mV在100 mA cm−2) 均表现出极好的催化性能.
- 催化剂的总电解电位为1.634V,远低于水分系统.
- 一个概念验证系统在没有外部电力的情况下以3.53 mmol cm−2 h−1的速度产生了H2.
结论:
- [W-O] 组作为水和氨酸的活性位点,提高了催化效率.
- 开发的催化剂和系统为可持续的生产提供了一个有希望的途径.
- 这项工作突出了针对先进的电化学应用量身定制的催化剂的潜力.
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