用CoCuFe-LDH/石墨烯三元复合材料作为水分裂电催化剂的因数优化
Daniele Alves1, Rafael A Moral2, Darshana Jayakumari3
1Department of Chemistry, Maynooth University, Maynooth, Co. Kildare Ireland, W23 F2H6.
层状双氧化物 (LDH) 显示出作为非贵金属电催化剂的前景. 石墨烯上的CoCuFe-LDH复合物增强了和氧的演变反应,高能增强OER,低能优化HER,表现出良好的稳定性.
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
- 纳米技术纳米技术
背景情况:
- 层状双氧化物 (LDH) 正在成为高效的非贵金属电催化剂.
- LDH具有可调节的组成和结构特性,有利于催化.
- 演变反应 (HER) 和氧演变反应 (OER) 对能量转换至关重要.
研究的目的:
- 在石墨烯 (G) 上合成CoCuFe-LDH复合物,使用简单的一步热水方法.
- 调查和石墨烯度对HER和OER性能的影响.
- 评估合成的三金属LDH复合物的催化活性和稳定性.
主要方法:
- 为了优化和石墨烯度,使用了2级全因数设计.
- CoCuFe-LDH/G复合材料是通过一阶段的热水过程合成的.
- 评估了OER和HER的电催化活性,使用发病潜力测量.
主要成果:
- Co[4.5]Cu[3]Fe[3]-LDH/G[10]表现出最低的OER发病潜力 (1.52V与RHE).
- Co[1.5]Cu[3]Fe[3]-LDH/G[10]显示了最低的 HER 发病潜力 (-0.32 V 与 RHE 相比).
- 三金属复合材料显示出出色的稳定性,在24小时内活动损失最小.
结论:
- 在CoCuFe-LDH/G中的高度提高了OER的性能.
- 低的度是 HER 催化最优的.
- 合成的CoCuFe-LDH/G复合物对OER和HER都是有前途的,稳定的电催化剂.
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