Perovskite-Type SrVO<sub>3</sub> as High-Performance Anode Materials for Lithium-Ion Batteries.
basic_science · Level V
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- Record sourced from PubMed, PMID 34677908.
- Also identified by DOI 10.1002/adma.202107262.
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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<sub>3</sub> can achieve excellent electrochemical performance as lithium-ion battery anodes thanks to its high electrically and ionically conductivity. Conducting additive-free SrVO<sub>3</sub> electrodes can deliver a high specific capacity of 324 mAh g<sup>-1</sup> at a safe and low average working potential of ≈0.9 V vs Li/Li<sup>+</sup> together with excellent high-rate performance. A high areal capacity of ≈5.4 mAh cm<sup>-2</sup> is obtained using an ultrathick (≈120 μm) electrode. Moreover, the fully lithiated SrVO<sub>3</sub> electrode exhibits only 2.3% volume expansion that is explained by a simple solid-solution Li<sup>+</sup> -storage mechanism, resulting in good cycling stability of the electrode. This study highlights the perovskite-type SrVO<sub>3</sub> as a promising Li<sup>+</sup> -storage anode and provides opportunities for exploring a variety of perovskite oxides as next-generation metal-ion battery anodes.