Unraveling the Stable Cathode Electrolyte Interface in all Solid-State Thin-Film Battery Operating at 5 V

Ryosuke Shimizu; Diyi Cheng; Jamie L. WeaverMinghao ZhangBingyu LuThomas A. WynnRandall BurgerMin-cheol KimGuomin ZhuYing Shirley Meng

首页> 外文期刊>Advanced energy materials >Unraveling the Stable Cathode Electrolyte Interface in all Solid-State Thin-Film Battery Operating at 5 V

【24h】

Unraveling the Stable Cathode Electrolyte Interface in all Solid-State Thin-Film Battery Operating at 5 V

机译：Unraveling the Stable Cathode Electrolyte Interface in all Solid-State Thin-Film Battery Operating at 5 V

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

Spinel-type LiNi_(0.5)Mn_(1.5)O_4 (LNMO) is one of the most promising 5 V-classcathode materials for Li-ion batteries that can achieve high energy densityand low production costs. However, in liquid electrolyte cells, the high voltagecauses continuous cell degradation through the oxidative decomposition ofcarbonate-based liquid electrolytes. In contrast, some solid-state electrolyteshave a wide electrochemical stability range and can withstand the requiredoxidative potential. In this work, a thin-film battery consisting of an LNMOcathode with a solid lithium phosphorus oxynitride (LiPON) electrolyte istested and their interface before and after cycling is characterized. With Limetal as the anode, this system can deliver stable performance for 600 cycleswith an average Coulombic efficiency >99%. Neutron depth profiling indicatesa slight overlithiated layer at the interface prior to cycling, a result thatis consistent with the excess charge capacity measured during the first cycle.Cryogenic electron microscopy further reveals intimate contact betweenLNMO and LiPON without noticeable structure and chemical compositionevolution after extended cycling, demonstrating the superior stability ofLiPON against a high voltage cathode. Consequently, design guidelines areproposed for interface engineering that can accelerate the commercializationof a high voltage cell with solid or liquid electrolytes.

著录项

来源
《Advanced energy materials》 |2022年第31期|2201119.1-2201119.11|共11页
作者
Ryosuke Shimizu; Diyi Cheng; Jamie L. WeaverMinghao ZhangBingyu LuThomas A. WynnRandall BurgerMin-cheol KimGuomin ZhuYing Shirley Meng;
展开▼
作者单位

Department of NanoEngineeringUniversity of California San DiegoLa Jolla, CA 92093, USA;

Materials Science and Engineering ProgramUniversity of California San DiegoLa Jolla, CA 92093, USA;

Material Measurement LaboratoryNational Institute of Standards and Technology100, Bureau Drive, Gaithersburg, MD 20899, USADepartment of NanoEngineeringUniversity of California San DiegoLa Jolla, CA 92093, USA School of Mechanical EngineeringPusan National UniversityBusan 46241, KoreaDepartment of NanoEngineeringUniversity of California San DiegoLa Jolla, CA 92093, USA Materials Science and Engineering ProgramUniversity of California San DiegoLa Jolla, CA 92093, USA Pritzker school of Molecular EngineeringUniversity of ChicagoChicago,;

展开▼
收录信息
原文格式 PDF
正文语种英语
中图分类
关键词
cathode electrolyte interphase; cryogenic electron microscopy; highvoltage spinel cathodes; Li metal batteries; LiPON;

Unraveling the Stable Cathode Electrolyte Interface in all Solid-State Thin-Film Battery Operating at 5 V

摘要

著录项

相关主题

期刊订阅