Affiliation:
1. School of Advanced Materials Peking University Shenzhen Graduate School Shenzhen 518055 P. R. China
2. Eastern Institute for Advanced Study Eastern Institute of Technology Ningbo Zhejiang 315200 P. R. China
3. National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230029 P. R. China
4. Advanced Technology Institute Department of Electrical and Electronic Engineering University of Surrey Guildford Surrey GU2 7XH UK
5. School of Energy and Power Engineering Jiangsu University Zhenjiang 212013 P. R. China
6. Department of Mechanical and Materials Engineering University of Western Ontario 1151 Richmond Street London Ontario N6A 3K7 Canada
Abstract
AbstractNASICON‐type Li1.3Al0.3Ti1.7(PO4)3 (LATP) is one of the most promising solid‐state electrolytes (SSEs) to achieve high‐energy‐density solid‐state batteries (SSBs) due to its high ionic conductivity, high‐voltage stability, and low cost. However, its practical application is constrained by inadequate interfacial compatibility with cathode materials and significant incompatibility with lithium metal. In this work, a cost‐effective interface welding approach is reported, utilizing an innovative thermal pulse sintering (TPS) to fabricate LATP‐based solid‐state batteries. Initially, the rapid thermal pulses enhance the ionic conductivity of LATP SSE by inducing selective growth of LATP nanowires, effectively occupying interparticle voids. Additionally, this process results in the formation of a dense layer (GCM) comprising graphene oxide, carbon nanotubes, and MXene with a controlled Li+ transport pathway, facilitating lithium stripping and plating processes. Moreover, these thermal pulses facilitate the interfacial fusion between LATP and cathode materials, while avoiding undesired phase diffusion. As a result, SSBs with a LiCoO2 cathode deliver favorable cycle stability at 4.6 V, marking significant progress. This facile interface welding strategy represents a substantial step toward high‐energy‐density SSB development.
Funder
Shenzhen Science and Technology Innovation Program
Natural Sciences and Engineering Research Council of Canada
National Natural Science Foundation of China
Subject
General Materials Science,Renewable Energy, Sustainability and the Environment