CIESC Journal ›› 2022, Vol. 73 ›› Issue (3): 1008-1021.DOI: 10.11949/0438-1157.20211411

• Reviews and monographs • Previous Articles     Next Articles

Research progress on electrocatalytic decomposition of ammonia for hydrogen production

Zhonghua WANG1(),Songsheng ZHENG1(),Yudong YAO2,Riyi CHEN1,Zhaolin WANG1   

  1. 1.College of Energy, Xiamen University, Xiamen 361102, Fujian, China
    2.China Three Gorges Renewables (Group) Co. , Ltd. , Beijing 101100, China
  • Received:2021-10-08 Revised:2022-01-06 Online:2022-03-14 Published:2022-03-15
  • Contact: Songsheng ZHENG

电催化分解氨制氢研究进展

王中华1(),郑淞生1(),姚育栋2,陈日懿1,王兆林1   

  1. 1.厦门大学能源学院,福建 厦门 361102
    2.中国三峡新能源(集团)股份有限公司,北京 101100
  • 通讯作者: 郑淞生
  • 作者简介:王中华(1997—),男,硕士研究生,2319895610@qq.com
  • 基金资助:
    国家自然科学基金面上项目(21875199);双一流建设重点高校项目(0290-X2100502);厦门大学能源学院-潍坊赛诺凯特广谱型氢能燃料电池研发中心项目(XDHT2020024C);厦门大学能源学院-淄博高新技术产业开发区氢能研发中心项目(XDHT2020023C);天然气管道掺氢降碳工程化示范项目(20213160A0336)

Abstract:

As one of the ideal energy carriers, hydrogen energy has not been developed on a large scale in recent years due to the problems of storage and transportation. However, with the maturity of electrocatalytic technology, the route of hydrogen production through electrocatalytic decomposition of hydrogen-containing media under mild conditions may have the potential for large-scale development of clean energy. Due to the advantages of high hydrogen-storage density (17.6%, mass fraction), convenient transportation, and carbon-free, ammonia (NH3) has been generally considered as a viable choice for chemical hydrogen storage. Electrocatalytic ammonia decomposition includes hydrogen evolution reaction(HER) and ammonia oxidation reaction(AOR). We focus on the recent progress of AOR and summarize the reaction mechanism and catalyst preparation strategies and methods. Although the theoretical voltage for the electrolysis of ammonia is very low, the actual catalytic process needs to provide additional voltage to overcome the obstacle of kinetics. So, the development of efficient and highly selective catalysts is the key to release hydrogen from the decomposition of ammonia. Pt has been proved to be the best pure metal-catalyst for AOR, while Pt-based binary or ternary alloys have higher catalytic activity and stability. In the past ten years, researchers have attempted to optimize the performance of AOR electrocatalysts from the aspects of nanometerization, alloying, morphology control, electronic control, etc. In addition, we discussed the challenges and applied prospects for AOR, hoping to provide guidance for obtaining more active catalysts and developing the route of “hydrogen-storage with ammonia”.

Key words: electrocatalytic, ammonia oxidation reaction, mechanism, catalyst, hydrogen production

摘要:

氢能作为一种理想的能源载体之一,近些年来受制于储存和运输的难题并未大规模发展。但随着电催化技术的成熟,在温和条件下,通过电催化分解含氢介质的制氢路线或将具备规模化开发清洁能源的潜力。氨(NH3)具有高储氢密度(17.6%,质量分数)、运输便利、无碳等优点,被认为是合适的储氢介质之一。电催化分解氨的过程主要包括析氢反应(hydrogen evolution reaction, HER)和氨氧化反应(ammonia oxidation reaction, AOR)。重点综述了阳极电催化分解氨的反应机理及AOR催化剂的研究现状,对氨氧化技术的发展和应用进行了总结和展望,可为开发具有更高活性、稳定性的AOR催化剂和“以氨制储氢”的发展路线提供思路和指导。

关键词: 电催化, 氨氧化反应, 机理, 催化剂, 制氢

CLC Number: