可控制的电化学释放从酸中释放的
Xi Liu1, Wei Sun1, Junxiang Chen1
1CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Materials and Techniques toward Hydrogen Energy, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China.
Angewandte Chemie (International ed. in English)
|December 6, 2023
概括
化 (NaBH4) 提供高储量. 一种创新的电化学方法使使用新型双功能电催化剂从NaBH4中控制释放气,实现高效率和功率密度.
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
- 化学工程是化学工程的重要组成部分.
背景情况:
- 化 (NaBH4) 是一个有前途的载体,具有很高的储存能力 (10.8%).
- 热解和水解等传统方法与受控的生成作斗争,特别是在环境条件下.
- 开发高效可控的释放气系统对于能应用至关重要.
研究的目的:
- 开发一种创新的电化学策略,用于从甲 (NaBH4) 中控制生成 (H2).
- 设计和合成一个用于高效生产的双功能电催化剂.
- 为了证明这个系统作为燃料电池的潜力.
主要方法:
- 开发了一种电化学策略,将性介质中的NaBH4电氧化 (BOR) 与酸性介质中的演化 (HER) 结合起来.
- 一种双功能电催化剂,Pd-Mo2C@CNTs (在嵌入在N-化碳纳米管中的化碳上生长的纳米粒子) 被合成.
- 使用Pd/Mo2C@CNT作为阳极和阴极电催化剂构建了一个混合酸/细胞.
主要成果:
- Pd-Mo2C@CNTs电催化剂对性BOR和酸性HER都表现出高性能.
- 混合细胞使得自给自足,精确和不间断的H2从NaBH4在高电流密度 (100mA cm-2) 的释放.
- 达到了接近100%的法拉第效率和20mWcm-2的最大功率密度,这表明了燃料电池的巨大潜力.
结论:
- 开发的电化学策略和双功能电催化剂提供了一个高效和可控的方法,用于从NaBH4.4产生气.
- 这个系统对实际的储和释放应用有很大的前景.
- 该设备作为燃料电池的性能突显了其在清洁能源发电方面的潜力.
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