不同质的Ni-化物/化物定无形BC层用于整体水电催化
Shiwei Song1,2, Yanhui Wang1, Yucan Liu1
1State Key Laboratory of Metastable Materials Science and Technology, School of Materials Science and Engineering, Yanshan University, No. 438 West Hebei Avenue, Qinhuangdao, Hebei, 066004, P. R. China.
ChemSusChem
|May 7, 2024
概括
这项研究介绍了一种新型的双功能电催化剂,B-化碳/Ni泡上的Ni-boride/phosphide,用于高效的整体水分裂. 它在生产中表现出卓越的性能和稳定性.
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
- 催化剂是一种催化剂.
背景情况:
- 为整体水电解开发高效,经济的双功能电催化剂至关重要,但具有挑战性.
- 现有的催化剂经常在性能,稳定性或成本效益方面扎.
研究的目的:
- 为了制造一种新的双功能电催化剂,用于整体的水分.
- 通过协同效应和层次性的多孔结构来增强电催化活性和稳定性.
主要方法:
- 在Ni泡 (Ni3P/Ni3B/B-C/NF) 中制造的Ni-化物/化物颗粒,固定在无形的B-化碳层上,具有层次的多孔特性.
- 使用电和无电,用碳化物 (B4C) 进行电,然后用真空高温回火.
- 材料结构和电化学性能的表征,用于水分.
主要成果:
- Ni3P/Ni3B/B-C/NF电极在100 mA cm−2.2时显示了HER的212 mV和OER的280 mV的低超电位.
- 双功能电催化剂在48小时内表现出极好的长期稳定性.
- 使用这种催化剂的电解器在50 mA cm−2时只需要1.59 V,在性介质中进行整体水分解.
结论:
- 开发的Ni3P/Ni3B/B-C/NF材料是一种高效和稳定的双功能电催化剂,用于整体水分.
- -化物/化物和B-化碳层之间的协同效应,以及层次性的多孔结构,显著增强了催化活性.
- 这项工作为开发基于过渡金属化物的催化剂提供了有前途的途径,用于高效生产气.
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