High‐Performance Lithium Solid‐State Batteries Operating at Elevated Temperature

A facile and inexpensive solid-state battery system (Li/LiBH4-LiI/lithiated TiS2) that exhibits excellent performance at elevated temperature (120 °C) is presented. The preformation of solid electrolyte interphase by chemical reaction is demonstrated to prohibit self-discharge and successfully address the interfacial issue between the solid electrolyte and cathode at high temperatures. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.