木基储能材料研究新进展  

Research progress of wood⁃derived energy storage materials

作　　者：卿彦[1] 廖宇 刘婧祎 田翠花[1] 许瀚 吴义强[1] QING Yan;LIAO Yu;LIU Jingyi;TIAN Cuihua;XU Han;WU Yiqiang(College of Materials Science and Engineering,Central South University of Forestry and Technology,Changsha 410004,China)

机构地区：[1]中南林业科技大学材料科学与工程学院,长沙410004

出　　处：《林业工程学报》2021年第5期1-13,共13页Journal of Forestry Engineering

基　　金：国家优秀青年科学基金(31922057);国家自然科学基金重大项目(31890771);湖南省湖湘青年英才计划(2018RS3092)。

摘　　要：木材作为一种可再生的天然高分子材料,其特有的结构和理化性质,使木材及其衍生材料在清洁能源、柔性传感和催化工程等领域的应用研究层出不穷,引起了科研工作者广泛关注。除了资源丰富、绿色环保和可生物降解等特点,木材还具备一些独特的优势,如各向异性的分层多孔结构、良好的机械灵活性和可调谐的多功能性等,近年来在电化学能源存储领域表现出令人憧憬的应用前景。笔者从实体木材、木质纤维和木质纳米纤维这3种不同维度的木基材料出发,分别总结了其在储能领域最新研究进展,探讨了这些材料的结构特性与电化学性能间的关联响应机制。基于不同树种实体木材的结构差异,比较分析了直接炭化、炭化后再活化改性的实体木材储能材料性能特征及对电化学储能的影响规律,进一步讨论了实体木材一体化储能器件的思路与创新。在木质纤维储能材料方面,总结分析了以单根纤维及纤维聚集体为起始单元的不同储能材料的结构性能特点,重点探讨了在柔性电极材料方面的应用前景。基于木质纳米纤维天然可控网状结构优势,主要分析了纳米纤维炭气凝胶在储能材料领域的应用特点。最后,展望了木基储能材料所面临的机遇挑战,以及未来需要重点关注的研究方向。With the global climate change and the emergence of resource shortage,environment-friendly materials have been attracted more and more attention in recent years.At the same time,with the increasing demand for advanced electrochemical energy storage(EES)devices,to achieve high performance and longer service life,there are some challenges,including reducing the cost,improving the safety and addressing the environmental protection problems of the next generation of green and sustainable EES devices.In recent years,as a sustainable and renewable biomass resource,wood and its derivatives have attracted much attention in flexible sensing,clean energy and bioengineering due to their unique physical and chemical characteristics.Apart from being rich in natural resources,renewable,sustainable,and biodegradable,wood and its derived material’s hierarchical porous structure and excellent mechanical flexibility and tuned versatility,make wood-derived materials ideal for efficient electrochemical energy storage and conversion systems.According to the structural characteristics of wood derivatives with different dimensions(wood chips,wood fibers and wood-derived nanofibers),the latest research progress in energy storage application is summarized,and the correlation response mechanism between the structure characteristics and electrochemical performance is discussed.Understanding the basic characteristics of these structures is especially important for the design and manufacture of energy storage applications.Based on the structural differences of different tree species,the performance characteristics,and the influence rules on electrochemical energy storage of solid wood energy storage materials modified by direct carbonization and reactivation after carbonization are compared and analyzed.The concept and innovations of solid wood integrated energy storage devices are further discussed.In the aspect of wood fiber based energy storage materials,the structure and performance characteristics of different energy storage materials

关 键 词：木材 木质纤维 木质纳米纤维 储能材料 储能器件 

分 类 号：S785[农业科学—林学] TQ127.11[化学工程—无机化工]