摘要
作为一种新型的多孔材料,氢键有机框架(hydrogen-bonded organic frameworks,HOFs)结构因其丰富的孔道分布、可控的晶体构型以及易于调节的分子组成而表现出诸多优异的电化学特性,如快速的离子传输、特异性的离子筛分、可观的电化学活性面积、高暴露的催化活性位点等.这些特性促使研究者越来越多地关注其在电化学能源存储和转换技术中的应用,是能源领域研究的前沿和热点.尽管这些HOFs相关材料的结构和组成各不相同,总体上却可以分为HOFs和HOFs衍生物两大类.本文详细地介绍了HOFs及其衍生物作为电极材料或电催化剂在电化学领域,包括可充电离子电池、电化学超级电容器、电催化析氢、电催化析氧和氧还原反应中的应用原理与最新研究进展.在此基础上,重点阐述了HOFs相关材料的纳米形貌、晶体结构、孔道结构和分子组成对其电化学性能的影响,总结了克服HOFs相关材料氢键骨架稳定性和导电性差的相关方法,凝练了它们在该领域发展中的优势和挑战.基于上述讨论,希望对HOFs相关材料在电化学能源存储和转换技术中的发展提供新的研究方向.
To satisfy the emergency demand of clean and renewable energy sources,developing highly efficient electrochemical energy storage and conversion technologies,such as rechargeable batteries,electrochemical capacitors,electrolyzers,and fuel cells,has become one of the greatest assignments for the sustainable development of society.Despite their different working principles,the two electrodes(cathode and anode),where the major electrochemical processes take place,such as charge storage in batteries/capacitors and electrocatalytic reactions in electrolyzers/fuel cells,are the key components for these electrochemical devices.Consequently,the design and construction of high-performance electrode materials has been a primary quest for the development of future electrochemical energy-related technologies.As a new class of porous materials,hydrogen-bonded organic frameworks(HOFs)have generated tremendous interests from researchers in widespread areas.Since most H-bonding interactions are essentially weak,flexible,and of low directionality,the morphology and structure of HOFs can be easily modulated depending on the precursors and synthesis solvents or conditions.In addition,the remarkably high porosity with large specific area and abundant functional groups endows the HOFs with rapid ion transport channels,specific ion sieving,considerable electrochemical active area,and highly exposed catalytic active sites.These features trigger extensive research interest to explore HOFs and their derivatives for electrochemical energy storage and conversion.Nevertheless,the electrochemical instability of hydrogen bonding and low electronic conductivity hampers their adaptation as electrode materials and electrocatalysts.To solve these issues,researchers have proposed some feasible schemes such as utilizing multiple hydrogen bonds and changing the electrolyte.In addition,converting HOFs into HOF-derived materials such as metal compounds,carbonaceous materials,or their composites has also been extensively investigated as alternative methods.These HOFs derivatives usually exhibit remarkable advantages originating from their microstructures or nanostructures,showing great potential in electrochemical energy related technologies.From this perspective,we summarized the latest developments of pristine HOFs and HOFs-derived materials as the electrodes or catalysts for electrochemical applications such as rechargeable batteries,electrochemical supercapacitors and electrocatalysis.We aim to provide an overview for this highly interdisciplinary area and discuss the significant breakthroughs that HOFs-related materials have brought to the field of electrochemical energy storage and conversion.The effects of morphology,structure and composition of these promising HOFs related materials on the electrochemical applications are systemically discussed.By highlighting the advantages and challenges of each class of materials for different applications,we hope to shed some light on the future development of HOFs related materials in the electrochemical applications.
作者
方晨晨
许雪凤
张校源
代黎明
姚方磊
张文耀
付永胜
孙敬文
朱俊武
Chenchen Fang;Xuefeng Xu;Xiaoyuan Zhang;Liming Dai;Fanglei Yao;Wenyao Zhang;Yongsheng Fu;Jingwen Sun;Junwu Zhu(Key Laboratory for Soft Chemistry and Functional Materials,Ministry of Education,Nanjing University of Science&Technology,Nanjing 210094,China)
出处
《科学通报》
EI
CAS
CSCD
北大核心
2023年第25期3335-3352,共18页
Chinese Science Bulletin
基金
国家自然科学基金(52125202,21908110,U2004209,22179062)
中央高校基本科研业务费专项资金(30922010707)
江苏省自然科学基金(BK20190479)资助。
关键词
氢键有机框架
锂/钠离子电池
超级电容器
析氧反应
氧还原反应
析氢反应
hydrogen-bonded organic framework
lithium/sodium ion battery
supercapacitor
oxygen evolution reaction
oxygen reduction reaction
hydrogen evolution reaction
