期刊文献+

钠电池层状过渡金属氧化物正极材料

Review of Layered Transition Metal Oxide Cathode Materials for Sodium Ion Batteries
原文传递
导出
摘要 锂离子电池(LIBs)因其良好的循环寿命以及较高的能量密度广泛应用于各种电子设备中,但锂电池成本较高且存在一定的安全性问题。钠离子电池(SIBs)是目前LIBs最有希望的补充或替代品。SIBs具有与锂电池相似的“摇椅式”工作原理,相较于锂电池,其在成本和安全性上显现出较好的优势。然而SIBs在能量密度与循环稳定性方面仍存在着诸多挑战。正极材料作为钠电池的主要组成部分,在很大程度上决定了电池的成本和性能。层状过渡金属氧化物(Na_(x)TMO_(2))正极材料因其高离子电导率和比容量以及环境友好等优点,成为了目前最有前景的钠电池正极材料之一。本文介绍了SIBs正极材料的分类,并重点从其结构、合成方法以及其所面临的挑战和改性策略这几个方面对Na_(x)TMO_(2)中能够稳定存在的两相(P2和O3相)进行阐述。最后,总结了目前层状过渡金属氧化物正极材料所存在的问题并提出后续材料的改性方向,以期为开发具有更优异的电化学性能、更符合市场需求、能实现大规模生产与应用的SIBs提供思路。 Lithium-ion batteries are commonly utilized in a variety of electronic devices due to their excellent cycle longevity and high energy density.However,they come with a hefty price tag and pose specific safety concerns.Sodium-ion batteries(SIBs)are currently emerging as the top contender to either complement or supplant lithium-ion batteries.SIBs have a similar“rocking chair”working principle with lithium batteries,and it has more advantages in cost and safety than lithium batteries.Nonetheless,there are numerous obstacles to overcome regarding the energy density and cycle stability of SIBs.The cathode material,as the main component of SIBs,largely determines the cost and performance of the battery.Layered transition metal oxide(Na_(x)TMO_(2))cathode materials have emerged as a top choice for SIBs,owing to their impressive ionic conductivity,specific capacity,and environmental sustainability.This article presents an overview of the categorization of cathode materials utilized in SIBs,with a specific emphasis on providing a comprehensive description of the structural characteristics,synthesis techniques,as well as the obstacles and adjustment approaches encountered by the two phases(P2 and O3 phases)that can be stabilized in Na_(x)TMO_(2).Finally,the problems of the current layered transition metal oxide cathode materials are summarized,and the direction of the subsequent modification of the materials is proposed,in order to provide ideas for the development of SIBs with more excellent electrochemical performance,more in line with the market demand,and capable of largescale production and application.
作者 李易涵 罗露芳 徐秋莹 张丽娟 Li Yihan;Luo Lufang;Xu Qiuying;Zhang Lijuan(College of Chemistry and Materials Science,Qinghai Minzu University,Xining,810007)
出处 《化学通报》 CAS CSCD 北大核心 2024年第11期1261-1272,1300,共13页 Chemistry
基金 青海省科技国际合作专项(2022-HZ-809)资助。
关键词 钠离子电池 层状结构 过渡金属氧化物 改性策略 Sodium-ion battery Layered structure Transition metal oxides Modification strategy

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部