Perovskite-type SrVO3 as high-performance anode materials for Lithium-ion batteries.

Perovskite-type oxides, characterized by excellent multifunctional physical and chemical properties, have been widely used in ferroelectric, piezoelectric, energy conversion, and storage applications. We show here that the perovskite-type SrVO3 can achieve excellent electrochemical performance as lithium-ion battery anodes thanks to its high electrically and ionically conductivity. Conducting additive-free SrVO3 electrodes can deliver a high specific capacity of 324 mAh g-1 at a safe and low average working potential of ∼0.9 V versus Li/Li+ together with excellent high-rate performance. A high areal capacity of ∼5.4 mAh cm-2 is obtained using an ultrathick (∼120 um) electrode. Moreover, the fully lithiated SrVO3 electrode exhibits only 2.3% volume expansion that is explained by a simple solid solution Li+ storage mechanism, resulting in good cycling stability of the electrode. This study highlights the perovskite-type SrVO3 as a promising Li+ storage anode and provides opportunities for exploring a variety of perovskite oxides as next-generation metal-ion battery anodes. This article is protected by copyright. All rights reserved.