Mixed ion-electron conductive materials: A path to higher energy density all-solid-state lithium-ion batteries

IF 13.2 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Nano Today Pub Date : 2024-11-22 DOI:10.1016/j.nantod.2024.102556
Abdulkadir Kızılaslan , Recep Kızılaslan , Akira Miura , Kiyoharu Tadanaga
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Abstract

The cathode of conventional lithium-ion batteries(LIBs) consist of three components including active materials, binders, and electron conductive agents. Binders and conductive agents, which are not directly involved in Faradaic reactions, should be minimized to incorporate more active materials into the electrode. Unlike conventional LIBs, in all-solid-state batteries(ASSBs) - considered as the next-generation batteries-, there is no liquid electrolyte to impart ionic conductivity through wetting the electrodes. Therefore, cathodes for ASSBs require both ion and electron-conducting additives to facilitate charge transport which complicates the preparation of the cathode with intimate triple contact between active material, ion conductive agent and electron conductive agent. In this perspective, mixed ion-electron conductive(MIEC) materials can be regarded as intrinsic ion-electron conductors for electrodes to ease the cathode preparation, boost gravimetric/volumetric energy density, and dig the path to monocomponent electrodes -solely active materials-. This review covers the potential of MIEC materials to be utilized as active material, binder, interlayer, and conductive scaffold to boost the electrochemical performance of solid-state LIBs. Besides, the potential of ASSBs with monocomponent electrodes was evaluated from the perspective of MIEC materials. Moreover, the feasibility of 2D structures were evaluated as MIEC materials for the ASSB electrodes. The concept of MIEC was not be confined to intrinsic MIEC materials but the materials that turned into MIEC by compositing, doping or heat-treatment were considered as MIEC materials in this study.
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混合离子电子导电材料:通往能量密度更高的全固态锂离子电池之路
传统锂离子电池(LIBs)的阴极由活性材料、粘合剂和电子导电剂三部分组成。粘合剂和导电剂不直接参与法拉第反应,应尽量减少使用,以便在电极中加入更多活性材料。与传统 LIB 不同,被视为下一代电池的全固态电池(ASSB)中没有液态电解质通过润湿电极来赋予离子导电性。因此,全固态电池的阴极需要同时使用离子导电添加剂和电子导电添加剂来促进电荷传输,这使得制备活性材料、离子导电剂和电子导电剂三者紧密接触的阴极变得更加复杂。从这个角度来看,离子电子混合导电(MIEC)材料可被视为电极的固有离子电子导体,从而简化阴极制备过程,提高重力/体积能量密度,并为单组分电极--纯活性材料--开辟道路。本综述介绍了 MIEC 材料作为活性材料、粘合剂、夹层和导电支架来提高固态 LIB 电化学性能的潜力。此外,还从 MIEC 材料的角度评估了单组分电极 ASSB 的潜力。此外,还评估了二维结构作为 ASSB 电极 MIEC 材料的可行性。在本研究中,MIEC 的概念并不局限于固有的 MIEC 材料,通过复合、掺杂或热处理变成 MIEC 的材料也被视为 MIEC 材料。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Nano Today
Nano Today 工程技术-材料科学:综合
CiteScore
21.50
自引率
3.40%
发文量
305
审稿时长
40 days
期刊介绍: Nano Today is a journal dedicated to publishing influential and innovative work in the field of nanoscience and technology. It covers a wide range of subject areas including biomaterials, materials chemistry, materials science, chemistry, bioengineering, biochemistry, genetics and molecular biology, engineering, and nanotechnology. The journal considers articles that inform readers about the latest research, breakthroughs, and topical issues in these fields. It provides comprehensive coverage through a mixture of peer-reviewed articles, research news, and information on key developments. Nano Today is abstracted and indexed in Science Citation Index, Ei Compendex, Embase, Scopus, and INSPEC.
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