材料科学
阳极
钙钛矿(结构)
电极
锂(药物)
化学工程
离子
无机化学
物理化学
化学
医学
工程类
内分泌学
有机化学
作者
Xiaolei Li,Zifeng Lin,Na Jin,Xiaojiao Yang,Yibo Du,Lei Li,Patrick Rozier,Patrice Simon,Ying Liu
标识
DOI:10.1002/adma.202107262
摘要
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.
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