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混合酸/电解电池用于产生和转化甲醇,由双功能Ni/MoN纳米电催化剂实施

Chaoming Rao¹, Haijian Wang¹, Kai Chen²

¹Key Laboratory of Jiangxi Province for Persistent Pollutants Control, National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization and Resources Recycle, Nanchang Hangkong University, Nanchang, Jiangxi, 330063, China.

Small (Weinheim an der Bergstrasse, Germany)

|October 16, 2023

概括

这项研究提出了Ni─MoN纳米基阵列作为一种双功能电催化剂,用于高效的生产和选择性甲醇氧化. 综合系统显示能耗降低和高纯度的产生.

科学领域:

电化学电化学电化学
材料科学材料科学材料科学
催化剂是一种催化剂.

背景情况:

集成的电解系统为生产和甲醇氧化提供了优势.
开发双功能电催化剂对于提高反应动力学和减少能源消耗至关重要.

研究的目的:

在泡 (NiMoN/NF) 上构建NiMoN纳米基阵列,作为双功能电催化剂.
评估催化剂在电催化生产和选择性甲醇氧化中的性能.
开发一个集成的酸电解细胞,用于组合反应.

主要方法:

在泡基板上合成Ni─MoN纳米基板阵列.
演化反应 (HER) 和甲醇氧化反应 (MOR) 的催化剂的电化学表征.
混合酸电解电池的制造和测试.
密度函数理论 (DFT) 计算以了解电子结构调制.

主要成果:

最佳的Ni─MoN/NF催化剂在酸中显示出优异的HER性能 (49mV超电位为10mA cm−2).
观察到MOR的高活性,在1.48V的中达到100mA cm−2.
集成的 HER-MOR 电池在 10 mA cm-2 时只需要 0.56 V,比 HER-OER 系统要低得多.
DFT研究证实,Ni的结合增强了MoN的电子结构和催化活性.

结论:

MoN/NF是一种高度活性和稳定的双功能电催化剂,用于集成生产和甲醇氧化.
开发的混合电解电池提供了低压,高能效的解决方案.
这种催化剂对清洁能源技术的实际应用具有重大前景.

关键词:

在HER-MOR酸电解系统.Ni-MoN 纳米基质阵列的纳米基质阵列.电催化剂是一种电催化剂.气演化反应反应的反应甲醇氧化反应是甲醇的氧化反应.

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