Garnet-Based All-Ceramic Lithium Battery Enabled by Li2.985B0.005OCl Solder

• DOI: 10.1016/j.isci.2020.101071
• Publication Date: 2020-04-18T02:25:02Z
• Authors: Wuliang Feng; Zhengzhe Lai; Xiaoli Dong; Panlong Li; Yonggang Wang; Yongyao Xia
• Keywords: Science; Q; Mechanical Property; Energy Storage; 01 natural sciences; 7. Clean energy; Energy Materials; Article; 0104 chemical sciences

Garnet-based bulk-type all-ceramic lithium battery (ACLB) is considered to be highly safe, but its electrochemical performance severely hindered by the huge cathode/electrolyte interfacial resistance. Here, we demonstrate an in situ coated Li2.985B0.005OCl as sintering solder, which uniformly on both LiCoO2 and Li7La3Zr2O12. With low melting point (267°C) high ionic conductivity (6.8 × 10−5 S cm−1), solder not only restricts La/Co interdiffusion, also provides fast Li+ transportation cathode. A resistance (386 Ω cm2) realized owing densification of ACLB hot-press sintering. The strain/stress released small elasticity modulus Li2.985B0.005OCl, leading a superior cycling stability. study sheds light design advanced garnet-based exploring proper solders with higher conductivity, lower point, smaller modulus.