轻松合成富含的多孔碳/NiMn混合物,使用高效的水分裂反应
Thirukumaran Periyasamy1, Shakila Parveen Asrafali2, Seong-Cheol Kim2
1Department of Fiber System Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea.
Polymers
|July 29, 2023
概括
开发地球上丰富的电催化剂对于高效的气产生至关重要. 这项研究介绍了一种与非贵金属集成的新型富含的多孔碳 (NRPC),显示出对氧演化反应 (OER) 和演化反应 (HER) 的出色活性.
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
- 催化剂是一种催化剂.
背景情况:
- 通过水分进行有效的生成需要具有高活性和稳定性,具有高成本效益的,土壤丰富的电催化剂,用于氧演化反应 (OER) 和演化反应 (HER).
- 目前的催化剂通常依赖于贵金属,限制了可扩展性和增加成本.
研究的目的:
- 制造一种新型富含的多孔碳 (NRPC) 材料,其中包含非贵金属,用于增强水分中的电催化活性.
- 为了研究OER和HER的各种金属含量 (Mn,Ni,NiMn) 的NRPC的结构和电化学特性.
主要方法:
- 从聚糖 (Pbz) 源合成NRPC.
- 通过热水过程将非贵金属 (Mn,Ni,NiMn) 纳入NRPC表面.
- 使用XRD,拉曼,XPS,BET,SEM和TEM进行表征.
- 对OER和HER的电化学性能评估.
主要成果:
- 对NRPC/NiMn.观察到的等级的3D花样形态.
- NRPC/NiMn证明了高效的电催化,对OER (370 mV) 和HER (136 mV) 的过电潜力较低.
- NRPC/NiMn表现出较低的Tafel斜率 (64 mV dec−1) 和出色的电化学稳定性 (长达20小时).
结论:
- NRPC和双金属NiMn之间的协同效应通过增加活性位点显著增强了催化活性.
- NRPC/NiMn是一种有希望的,具有成本效益的电催化剂,可通过水分解有效生产气.
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