Perovskite‐Type SrVO3 as High‐Performance Anode Materials for Lithium‐Ion Batteries. Issue 46 (23rd December 2021)

• Record Type: Journal Article
• Authors: Li, Xiaolei; Lin, Zifeng; Jin, Na; Yang, Xiaojiao; Du, Yibo; Lei, Li; Rozier, Patrick; Simon, Patrice; Liu, Ying
• Is Part Of: Advanced materials. Volume 34:Issue 46(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-12-23
• Subjects: anodes -- areal capacity -- lithium‐ion batteries -- low volume expansion -- perovskite SrVO 3 -- volumetric capacity; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.202107262
• Languages: English
• ISSNs: 0935-9648

Abstract

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 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 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 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. Abstract : Perovskite SrVO3 is investigated as a Li‐ion battery anode material. Thanks to the high intrinsic electronic and ionic conductivities, commercial thick and conducting additive‐free perovskite SrVO3 electrodes are constructed and electrochemical performance with high gravimetric/areal/volumetric capacities, high‐rate capability, and high cycling stability is delivered.