用于性水分裂的基金属/氧化物基金属/氧化物纳米结构的表面修饰
Guoning Li1, Faming Liu1, Weiyang Ma1
1School of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, China.
Molecules (Basel, Switzerland)
|August 12, 2023
概括
研究人员开发了一种低成本,环保的催化剂,用于氧进化 (OER) 和进化 (HER) 反应. 这种双功能材料表现出极好的稳定性和水分活动,促进了可持续的生产.
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
- 可持续的能源 可持续的能源
背景情况:
- 开发高效的双功能电催化剂,用于氧进化反应 (OER) 和进化反应 (HER),对于通过水电解来实现可持续的生成至关重要.
- 对于性电解质来说,贵金属催化剂的低成本,环保的替代品非常受欢迎.
研究的目的:
- 创建一种简单和可持续的方法,从可再生副产品 - - 素生产双功能电催化剂.
- 为了研究OER和HER的素衍生Co/Co3O4-NPC-400的催化性能和稳定性.
主要方法:
- 使用热解氧化策略将红素转化为嵌入Co/Co3O4纳米粒子的N-化碳基质 (NPC).
- 素与NH4Cl的共同热解形成了层次性的多孔N-化碳结构.
- 空气化在催化剂表面引入了氧气空缺和含氧组.
主要成果:
- 合成的Co/Co3O4-NPC-400在性介质中表现出优异的OER和HER的双功能活性和稳定性.
- 催化剂表现出高的OER活性,在1.8V (相对于RHE) 实现了约320mA·cm-2的电流密度.
- 使用Co/Co3O4-NPC-400作为阳极和阴极的水电解需要1.95V的低电池电压才能达到10mA·cm-2.
结论:
- 素衍生的Co/Co3O4-NPC-400作为一种高效和稳定的双功能电催化剂,用于水分.
- 这项工作提出了从生物质中制备碳支持的电催化剂的总体策略,并为素的价值化提供了一条有价值的途径.
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