摘要
普鲁士蓝及其类似物具有独特的开放框架结构、丰富的储钠位点及较大的钠离子迁移通道,是最有商业化前景的钠离子电池正极材料之一.该类材料主要是利用共沉淀法或单一铁源自分解的方法合成.其超低的沉淀溶解平衡常数导致该类材料在制备过程中极易产生晶格缺陷和结晶水,造成比容量低、倍率能力欠佳和长期稳定性差.本文主要介绍了普鲁士蓝及其类似物材料的结构特征及其电化学特性,综述了该类材料的制备和改性方法,并对其作为钠离子电池正极材料的发展进行了展望.这一综述将推动普鲁士蓝材料在钠离子电池中的进一步研究,尤其是其新兴商业化进展.
The traditional energy supplied from fossil fuels cannot meet the increasing requirements due to the rapid development of modern social economy and the advancement of industrialization and urbanization.Our planet faces energy sustainability challenges that call for intensive researches in various disciplines,including the field of electrochemical energy storage derived from solar,wind,and tidal power.To successfully achieve the strategic goal of clean and sustainable energy,advanced energy storage technologies,especially lithium-ion secondary batteries,have aroused widespread attention and made great achievements in the market of electric vehicles and portable electronic equipment.The global energy storage market for batteries will reach to$13.13 billion by 2023 from the forecast by GlobalData.However,there are some intrinsic characteristics including the growing price of lithium resources and safety to make the current lithium-ion batteries less attractive for large-scale stationary energy storage systems.Compared with lithium(Li),sodium(Na)is the sixth most abundant element in the earth′s crust,making it be investigated as a guest ion to develop less expensive and easy accessibility of Na rechargeable battery systems.Prussian blue and its analogues have unique open framework structure,rich sodium storage sites and large sodium ion migration channels.Due to their facile synthesis method,low-cost raw precursors,and rich redox couples which contribute to the excellent electrochemical performance,making them one of the most promising cathode materials for sodium ion batteries.These materials are mainly synthesized by coprecipitation method or single iron source decomposition method.Due to their ultra-low precipitation dissolution equilibrium constants,these mate-rials are easy to produce lattice defects and crystal water during the preparation process,resulting in low specific capacity,poor magnification ability and poor long-term stability.There are still great challenges in synthesizing sodium rich Prussian blue with high crystallinity and low crystal water and excellent electrochemical performance.Therefore,the latest research progress of Prussian blue as cathode material of sodium-ion batteries is comprehensively summarized in this paper.First,the structural features and redox mechanisms of Prussian blue are discussed with the aim to promote the understanding of these materials.Second,the synthesis control and modification strategies are introduced in order to provide new insights into future design of Prussian blue for advanced rechargeable batteries.Finally,some personal viewpoints on the challenges and outlook for Prussian blue in application are included.It is anticipated that this review will inspire further development of Prussian blue for sodium-ion batteries,especially for their emerging commercialization.
作者
李林
朱登贵
孙淑敏
王培远
LI Lin;ZHU Deng-gui;SUN Shu-min;WANG Pei-yuan(Xinxiang Quality and Technical Supervision,Inspection and Test Center,Xinxiang 453002,China;College of Materials and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450001,China)
出处
《分子科学学报》
CAS
北大核心
2023年第1期1-10,共10页
Journal of Molecular Science
基金
河南省科技攻关计划项目(222102240030)
河南省自然科学基金资助项目(222300420581)。
关键词
普鲁士蓝类似物
钠离子电池
正极材料
Prussian blue analogue
sodium ion battery
cathode material
作者简介
Corresponding author:李林,E-mail:1114094357@qq.com;Corresponding author:王培远,E-mail:peiyuanwang@zzuli.edu.cn。
