Perovskite‐Type SrVO3 as High‐Performance Anode Materials for Lithium‐Ion Batteries

Abstract Perovskite‐type oxides, characterized by excellent multifunctional physical and chemical properties, are widely used in ferroelectric, piezoelectric, energy conversion, and storage applications. It is shown here that the perovskite‐type SrVO 3 can achieve excellent electrochemical performance as lithium‐ion battery anodes thanks to its high electrically and ionically conductivity. Conducting additive‐free SrVO 3 electrodes can deliver a high specific capacity of 324 mAh g −1 at a safe and low average working potential of ≈0.9 V vs Li/Li + together with excellent high‐rate performance. A high areal capacity of ≈5.4 mAh cm −2 is obtained using an ultrathick (≈120 μm) electrode. Moreover, the fully lithiated SrVO 3 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 SrVO 3 as a promising Li + ‐storage anode and provides opportunities for exploring a variety of perovskite oxides as next‐generation metal‐ion battery anodes.