Argyrodite Solid Electrolyte-Integrated Ni-Rich Oxide Cathode with Enhanced Interfacial Compatibility for All-Solid-State Lithium Batteries,ACS Applied Materials & Interfaces

当前位置： X-MOL 学术 › ACS Appl. Mater. Interfaces › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Argyrodite Solid Electrolyte-Integrated Ni-Rich Oxide Cathode with Enhanced Interfacial Compatibility for All-Solid-State Lithium Batteries
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2022-07-14 , DOI: 10.1021/acsami.2c08940
Yang Xia ₁ , Jiaojiao Li ₁ , Zhen Xiao ₂ , Xiaozheng Zhou ₁ , Jun Zhang ₁ , Hui Huang ₁ , Yongping Gan ₁ , Xinping He ₁ , Wenkui Zhang ₁

Affiliation

All-solid-state lithium batteries (ASSLBs) paired with an argyrodite sulfide solid electrolyte have become a candidate to take the world by storm for achieving high energy and safety. However, the undesirable interface design between a sulfide solid electrolyte and cathode is difficult to address its scalability production challenge. Particularly, the inferior interfacial contact between a sulfide solid electrolyte and cathode is an intractable obstacle for the large-scale commercial application of ASSLBs. Herein, an elaborately designed conformally in situ integration of a sulfide solid electrolyte onto a Ni-rich oxide cathode is proposed to overcome this issue through a facile tape casting method. In this unique integrated electrode structure, the sulfide solid electrolyte intimately makes contact with the Ni-rich oxide cathode, which significantly strengthens the solid–solid interfacial compatibility, as well as decreases the interfacial reaction resistances, thereby enabling rapid Li⁺ transportation and a stable interfacial structure. As a result, ASSLBs consisting of a sulfide solid electrolyte-integrated Ni-rich oxide cathode and Li anode exhibit high discharge capacity, excellent cyclic stability, and remarkable rate performance, which are superior to the cells with segregated structures composed of a Ni-rich oxide cathode, sulfide solid electrolyte, and Li anode. The features clearly indicate that the advanced interfacial contact between the cathode and solid electrolyte is responsible for ASSLBs with low polarization and fast reaction kinetics. Therefore, this work provides a rational proof-of-concept fabrication protocol for the reliable interfacial structure design of high-performance ASSLBs.

中文翻译：

用于全固态锂电池的具有增强界面兼容性的银汞矿固体电解质集成富镍氧化物阴极

全固态锂电池（ASSLB）与硫银矿硫化物固体电解质搭配，已成为席卷全球的实现高能量和安全性的候选材料。然而，硫化物固体电解质和阴极之间不良的界面设计很难解决其可扩展性生产挑战。特别是，硫化物固体电解质与正极之间较差的界面接触是ASSLBs大规模商业应用的棘手障碍。在此，提出了一种精心设计的硫化物固体电解质在富镍氧化物阴极上的共形原位集成，以通过简便的流延方法克服这个问题。在这种独特的集成电极结构中，硫化物固体电解质与富镍氧化物正极紧密接触，显着增强了固-固界面相容性，并降低了界面反应电阻，从而实现了Li ^{+ 的}快速传输和稳定界面结构。因此，由硫化物固体电解质集成的富镍氧化物正极和锂负极组成的ASSLBs表现出高放电容量、优异的循环稳定性和显着的倍率性能，优于由富镍氧化物组成的偏析结构电池。氧化物正极、硫化物固体电解质和锂负极。这些特征清楚地表明，阴极和固体电解质之间先进的界面接触是ASSLBs具有低极化和快速反应动力学的原因。因此，这项工作为高性能 ASSLB 的可靠界面结构设计提供了合理的概念验证制造协议。

更新日期：2022-07-14

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南