一种耐腐蚀的RuMoNi催化剂,用于高效且持久的海水氧化和离子交换膜电解器
Xin Kang1, Fengning Yang1,2, Zhiyuan Zhang1
1Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute & Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, P.R. China.
Nature communications
|June 17, 2023
概括
一种新的RuMoNi电催化剂可以防止海水腐蚀.
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
- 可持续能源 可持续能源
背景情况:
- 直接海水电解为气 (H2) 生产提供了一个可持续的途径.
- 海水中的离子会导致催化剂腐蚀,降低效率,阻碍实际应用.
- 开发强大的电催化剂对于推进海水电解技术至关重要.
研究的目的:
- 开发一种耐腐蚀的电催化剂,用于直接海水电解.
- 提高从海水中生产的效率和稳定性.
- 评估海水电解为燃料的经济可行性.
主要方法:
- 制造了一种新的鲁-- (RuMoNi) 电催化剂.
- 在现场用酸盐离子进行表面修饰,以排斥化物离子.
- 在性海水电解质中在高电流密度下进行长期稳定性测试.
- 在一个离子交换膜电解器的性能评估.
主要成果:
- RuMoNi电催化剂表现出极好的稳定性,在500 mA cm-2.2下运行超过3000小时.
- 在现场形成的酸盐离子有效地排斥化物离子,防止催化剂腐蚀.
- 在电流密度为1000 mA cm−2.2. 的情况下,实现了77.9%的能量转换效率.
- 生产的计算成本 (0.85美元/GGE) 远低于美国能源部的2026年目标.
结论:
- 鲁蒙尼电催化剂为直接从海水中生产稳定高效的实际解决方案.
- 这一进步解决了海水电解的关键挑战,为具有成本效益的绿色开辟了道路.
- 该技术显示出大量的商业化潜力,并为可持续能源未来做出贡献.
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