通过主动机器学习发现高性能Ni0.62Fe0.23Ce0.15O电催化剂,用于通过主动机器学习进行氧气进化反应
Miaomiao Xue1,2, Wenxuan Fan1, Zaibin Xue1
1School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Coal Clean Conversion and Low Carbon Utilization, Anhui University of Technology, Ma'anshan 243032, China.
ACS nano
|January 30, 2026
概括
机器学习和遗传算法加速了对氧演化反应 (OER) 有效的异原子化过渡金属氧化物 (H-TMO) 电催化剂的发现. 优化的NiFeCeO表现出卓越的性能,通过DFT验证,减少了OER能源障碍.
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
- 计算化学的计算化学
背景情况:
- 异原子合过渡金属氧化物 (H-TMO) 是氧化演化反应 (OER) 的有希望的电催化剂.
- 为OER优化H-TMO的结构和组成是具有挑战性和耗时的.
- 高效的OER电催化剂对于可再生能源技术至关重要.
研究的目的:
- 开发一个有效的战略,整合机器学习 (ML) 和基因算法 (GA) 来预测OER电催化剂性能.
- 为了确定最佳的 NiO 基电催化剂与异构原子兴奋剂,以增强 OER 活性.
- 为加速新型电催化剂的合理设计提供一个范例.
主要方法:
- 开发了一种ML模型,特别是随机森林回归 (RFR),用于预测OER过度潜力.
- 集成RFR与基因算法 (GA) 进行高效选和优化催化剂组合.
- 进行实验验证和密度函数理论 (DFT) 计算,以确认预测和理解机制.
主要成果:
- 在预测超电位方面,RFR模型实现了高精度 (RMSE为4.73mV).
- 预测的NiFeCeO电催化剂具有特定的Ce和Fe分子分数,表现出较低的过电潜力.
- 确定了Ni 0.62Fe 0.23Ce 0.15O作为最有前途的催化剂,在10 mA/cm2时表现出260 mV的超电位.
- DFT的计算显示,Fe和Ce的注降低了带隙,并改善了电子导电性和动力学,降低了OER能量屏障.
结论:
- 机器学习引导的选,实验验证和DFT分析的协同策略加速了催化剂的发现.
- 开发的RFR-GA方法对于OER的H-TMO的合理设计是有效的.
- NiFeCeO表现出卓越的OER性能,突出了优化异质原子兴奋剂的潜力.
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