Homogenizing Interfacial Temperature Distribution for High Performance Solid-State Lithium Metal Batteries
Chonglai Jiang, Haotian Lu, Jinlin Yang, Zejun Sun, Yukun Xiao, Yuxiang Niu, Hongfei Xu, Yuan Liu, Meng Wang, Haotian Yang, Baihua Cui, Long Yu, Ganwen Chen, Shan Yi, Quan‐Hong Yang, Wei Chen
Abstract
An intermediate layer ensuring good thermal dispersion and intimate interfacial contact between the lithium metal anode (LMA) and solid-state electrolyte (SSE) is essential for improving the interfacial stability and suppressing lithium dendrites, endowing solid-state lithium metal batteries with great potential for practical application. Herein, core–shell Cu@Ag nanowires (NWs) with good lithiophilic affinity and thermal conductivity are applied to stabilize the interface between LMA and garnet-type electrolyte. An intimate anodic interface can be achieved with an interfacial resistance of only 14.14 ohm cm 2 . The lifetime of Li|Li symmetric cells with the Cu@Ag NWs can be prolonged to 1000 h at 0.5 mA cm –2 . The Li|LiFePO 4 full cell delivers a long cycling lifetime over 350 cycles with 90% capacity retention at 1 C. Even with a high-voltage cathode LiNi 0.8 Co 0.1 Mn 0.1 O 2, the full cells can still be stably cycled over 240 cycles at 0.5 C, demonstrating the promising potential for practical application.