电催化硝酸盐还原合成氨过程中活性氢的原位电化学表征技术

doi:10.61558/2993-074X.3619

电化学（中英文）

• 综述 •

电催化硝酸盐还原合成氨过程中活性氢的原位电化学表征技术

李红梅^a, 易梅^b, 晋兆宇^b, 解明皓^c, Khalid M. Omer^d, 郭勇^a^,*, 李盼盼^e^,*

a. 四川大学化学学院，四川成都 610065; b.电子科技大学基础与前沿研究院，四川成都 611731; c. Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States; d. Department of Chemistry, College of Science, University of Sulaimani, Sulaimani City, Kurdistan Region 46002, Iraq; e. 四川大学材料科学与工程学院，四川成都 610065.

发布日期:2026-06-11
通讯作者: 郭勇, 李盼盼 E-mail:guoy@scu.edu.cn; panpanli@scu.edu.cn

In Situ Electrochemical Characterization Techniques for Active Hydrogen in Electrocatalytic Nitrate Reduction to Ammonia

Hongmei Li^a, Me Yi^b, Zhaoyu Jin^b, Minghao Xie^c, Khalid M. Omer^d, Yong Guo^a,^*, Panpan Li^e,^*

a. College of Chemistry, Sichuan University, Chengdu 610065, P. R. China; b. Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, P. R. China; c. Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States; d. Department of Chemistry, College of Science, University of Sulaimani, Sulaimani City, Kurdistan Region 46002, Iraq; e. College of Materials Science and Engineering, Sichuan University, Chengdu 610065, P. R. China.

Online:2026-06-11
Contact: Yong Guo, Panpan Li E-mail:guoy@scu.edu.cn; panpanli@scu.edu.cn

摘要/Abstract

摘要： 电催化硝酸盐还原合成氨（NitRR）是一条将环境污染治理与高附加值化学品生产相结合的绿色可持续路径。然而，其活性与选择性受限于瞬态中间体——活性氢（*H）的生成、消耗与动态平衡。实现活性氢的精准调控，必须首先依赖于先进的原位电化学表征技术对其行为进行全面解析。尽管已有综述从调控策略、原位表征总览等角度进行论述，但系统评述如何合理选用原位电化学技术对NitRR中的*H进行专门表征，并清晰界定各技术的“检测对象、定量精度与应用边界”的工作仍属空白。本文旨在填补这一方法学空缺，系统梳理了用于解析NitRR中*H行为的原位电化学表征技术，包括原位谱学技术、原位电化学方法和扫描电化学显微镜技术。基于这些先进表征技术，在该综述中，我们重点构建了一个针对NitRR过程中*H表征的“问题导向”的多层次方法学框架。通过阐述这些技术的原理、应用实例与适用范围，旨在为后续活性氢研究中的表征技术选择提供可靠依据，从而深化对NitRR微观机制的理解。此外，还探讨了未来的研究方向和发展趋势，为推动高效、高选择性绿色氨合成技术的发展提供了相关指导。

关键词: 硝酸盐还原, 活性氢, 原位电化学表征技术, 电合成氨

Abstract: Electrocatalytic nitrate reduction to ammonia (NitRR) represents a sustainable pathway that integrates environmental remediation with the production of high-value ammonia. However, the activity and selectivity of this process are limited by the generation, consumption, and dynamic equilibrium of the key transient intermediate—active hydrogen (*H). Precise modulation of *H necessitates a comprehensive understanding of its behavior, which relies fundamentally on advanced in situ electrochemical characterization techniques. However, a systematic review dedicated to the rational selection and application of in situ electrochemical techniques for the specific characterization of *H in NitRR, with clear definitions of each technique's "detectable targets, quantitative accuracy, and application boundaries" remains absent. This review aims to fill this methodological gap by systematically summarizing in situ electrochemical techniques for probing *H behavior in NitRR, including in situ spectroscopic techniques, in situ electrochemical methods, and scanning electrochemical microscopy. We construct a problem-oriented hierarchical methodological framework tailored for *H characterization in NitRR. By detailing the principles, representative applications, and limitations of these techniques, this review provides a reliable guide for selecting appropriate characterization methods in future *H research, thereby deepening the mechanistic understanding of NitRR. Additionally, future research directions and development trends are discussed, offering insights to advance efficient and selective green ammonia synthesis technologies.

Key words: nitrate reduction reaction, active hydrogen, in situ electrochemical characterization techniques, ammonia electrosynthesis

李红梅, 易梅, 晋兆宇, 解明皓, Khalid M. Omer, 郭勇, 李盼盼. 电催化硝酸盐还原合成氨过程中活性氢的原位电化学表征技术[J]. 电化学（中英文）, doi: 10.61558/2993-074X.3619.

Hongmei Li, Me Yi, Zhaoyu Jin, Minghao Xie, Khalid M. Omer, Yong Guo, Panpan Li. In Situ Electrochemical Characterization Techniques for Active Hydrogen in Electrocatalytic Nitrate Reduction to Ammonia[J]. Journal of Electrochemistry, doi: 10.61558/2993-074X.3619.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://electrochem.xmu.edu.cn/CN/10.61558/2993-074X.3619

电催化硝酸盐还原合成氨过程中活性氢的原位电化学表征技术

In Situ Electrochemical Characterization Techniques for Active Hydrogen in Electrocatalytic Nitrate Reduction to Ammonia

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 1

Metrics