钒酸镍锂离子电池负极材料的研究进展

综述了近年来国内外关于钒酸镍材料的合成方法、结构性质以及应用于锂离子电池新型负极材料的研究进展。钒酸镍(Ni3V2O8、NiV3O8等)电极材料具有成本低、环境友好、比容量高、倍率性能优异等优点,但其在充放电过程中体积的巨大变化、电导性差以及比表面积低等问题严重影响了其规模化应用。该文从三个方面阐述了近年来通过电极材料微纳米化、复合化、表面包覆等手段有针对性的进行钒酸镍电极材料改性的研究进展,积极探索了高性能钒酸镍材料的合成方法,展望了今后重点开展的研究方向,对于钒酸镍材料的广泛应用具有一定的学术价值和实用意义。

Recent progress of nickel vanadate anode material for lithium-ion batteries

Abstract:Lithium-ion batteries are one of the most popular rechargeable batteries so far. Industrial graphite has been widely used in lithium-ion battery anodes. However, its lower specific capacity and poor rate limit its further application in lithium-ion batteries. Nickel vanadate (Ni3V2O8 and NiV3O8) electrode materials, with economical sustainability, environmental friendliness, high specific capac-ity and excellent rate performance, are considered to be a series of promising new anode materials for lithium-ion batteries. However, the volume expansion of the Ni3V2O8 and NiV3O8 electrodes dur-ing charging and discharging is too large, which results in the powderization of the pole piece materi-al, rapid attenuation of the specific capacity, and poor cycle stability. In this review, the synthesis methods, structural properties of nickel vanadate and the research progress of these new anode mate-rials for lithium-ion batteries are introduced. In addition, several methods for improving the electro-chemical performance of nickel vanadate are emphatically discussed, which includes micro-nano synthesis of the electrode material, synthesis of complex material, surface coating, etc. Finally, the research work in the future is prospected.