电化学氢气制备耦合无机化学品电氧化的研究进展  

Recent Progress on Strategies for Electrochemical Hydrogen Production Coupling with Oxidation of Inorganic Chemicals

作　　者：严大峰 谢超 陈晨 YAN Dafeng;XIE Chao;CHEN Chen(College of Chemistry and Chemical Engineering,Hubei University,Wuhan 430062,China;College of Chemistry and Chemical Engineering,Hunan Normal University,Changsha 410081,China;College of Chemistry and Chemical Engineering,Hunan University,Changsha 410082,China)

机构地区：[1]湖北大学化学化工学院,武汉430062 [2]湖南师范大学化学化工学院,长沙410081 [3]湖南大学化学化工学院,长沙410082

出　　处：《高等学校化学学报》2023年第5期224-235,共12页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:22202065)资助.

摘　　要：电化学水裂解制备氢气因其固有的优势受到了广泛关注.然而,阳极氧气析出反应动力学缓慢、能耗高,极大地限制了其应用.与氧析出反应不同,一些无机化学品的电氧化无论是热力学还是动力学上都更易发生.因此,耦合氢气析出反应和无机化学品氧化在提高电化学制氢效率方面表现出巨大潜力.与氧气析出反应相比,无机化学品氧化可以显著降低过电位.同时,还可以在阳极去除污染物或制备高附加值化学品.本综合评述总结了电化学制备氢气耦合无机化学品电氧化方面的研究进展.首先,介绍并讨论一些具有代表性的无机化学替代品,如含氮的肼、一氧化氮以及含硫的硫化氢、二氧化硫等,其可以实现在很低的电压下制备氢气并且从根本上避免氧气的产生.另外,引入电化学中和能能够进一步降低电化学制备氢气电解槽的槽压,甚至可以实现在制备氢气的同时输出电力.最后,对该领域面临的挑战以及未来发展进行了展望.Electrochemical water splitting to produce H_(2)has drawn much attention for inherent advantages.However,the sluggish reaction kinetics of anodic oxygen evolution reaction(OER)and high energy consumption greatly limited its application.In contrast to OER,the electrooxidation of some inorganic chemicals is more thermodynamically and kinetically favorable.Therefore,coupling hydrogen evolution reaction(HER)with inorganic alterna⁃tives oxidization shows great potential to enhance the efficiency of H_(2)production.It can obviously lower the anodic overpotential compared with OER.Simultaneously,some pollutants can be removed or some valuable chemicals can be produced on the anode.In this review,we will summarize the recent progress on the strategy of H_(2)production coupling with the electrooxidation of inorganic chemicals.Firstly,some representative inorganic alternatives are introduced and discussed,including nitrogenous N_(2)H4 and NO and sulfureted H_(2)S and SO_(2),which can assist to produce H_(2)at very low cell voltage and radically avoid the generation of O_(2).And then introducing electrochemical neutralization energy to further decrease the cell voltage of electrochemical H_(2)production or even achieve H_(2)produc⁃tion together with electricity output are further discussed.Finally,the remaining challenges and perspectives are also provided for future development.

关 键 词：氢气制备 无机替代物 节能 发电 

分 类 号：O643[理学—物理化学]