在现场构建一个嵌入在N-化碳上的P/CoP异质连接,作为进化反应的有效电催化剂
Ying Lei1, Feng Lin1, Nengyu Hong1
1College of Chemical and Material Engineering, Quzhou University, Quzhou 324000, China.
Materials (Basel, Switzerland)
|January 11, 2024
概括
没有贵金属的电催化剂对于可再生能源至关重要. 在N-化碳 (Co2P/CoP/NC) 上的一种新型Co2P/CoP异质连接显示了在酸性溶液中高效的演化反应 (HER) 活性.
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
- 可再生能源可再生能源是可再生能源.
背景情况:
- 没有贵金属的电催化剂对于进化反应 (HER) 对于推进可再生能源技术至关重要.
- 开发高效和成本效益的替代品贵金属是一个关键的研究领域.
研究的目的:
- 为了合成和表征一种新型的Co2P/CoP异质连接,嵌入N-化碳 (Co2P/CoP/NC) 作为HER的电催化剂.
- 在酸性介质中评估合成材料的电催化性能.
主要方法:
- 在现场使用热解方法来制备Co2P/CoP/NC电催化剂.
- 使用电化学技术来评估HER活性,包括超电位和Tafel斜率测量.
- 确定了电化学活性表面积.
主要成果:
- Co2P/CoP/NC催化剂在酸性溶液中对HER表现出高效的电催化活性.
- 在10 mA cm-2时实现了184 mV的超电位,以及82 mV dec-1的低Tafel斜率.
- 催化剂的高电化学活性表面积为75.2 m2 g-1.
结论:
- 紧密的Co2P/CoP异质连接和与N-化碳的协同效应有助于提高HER的性能.
- 这项工作为设计高效和低成本的3D过渡金属化物电催化剂提供了新的策略,这些电催化剂由N-化碳支持HER.
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