Perovskite-Type CaVO3 Nanocomposite as High-Performance Anode Material for Lithium-Ion Batteries

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Nano Letters Pub Date : 2024-11-22 DOI:10.1021/acs.nanolett.4c03328

Lei Sun, Zifeng Lin, Yucheng Hu, Lin Tan, XiaoLei Li, Xiaojiao Yang, Ying Liu

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Abstract

Electric vehicles’ rapid development has put higher requirements on the performance of lithium-ion batteries (LIBs). However, the specific capacity of a commercial graphite anode (372 mAh g^–1) has become the bottleneck for further improvement. Therefore, it is urgent to develop novel anode materials with superior performance. Herein, we propose crystalline–amorphous dual-phase CaVO₃ nanocomposites as LIB anodes. Benefiting from the stable perovskite structure and high conductivity of CaVO₃, the nanocomposite follows the intercalation mechanism, resulting in no capacity decay during 5000 cycles. In addition, due to the multielectron transfer provided by amorphous high-valent vanadium oxide, the nanocomposite can provide a high specific capacity of 442.8 mAh g^–1 with a suitable average working potential of 0.95 V. The ingenious strategy of constructing nanocomposites through spontaneous oxidation of nanoparticles is expected to be extended to the perovskite oxide family, inspiring the development of more high-performance LIB anodes.

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作为高性能锂离子电池负极材料的透辉石型 CaVO3 纳米复合材料

电动汽车的快速发展对锂离子电池（LIB）的性能提出了更高的要求。然而，商用石墨负极的比容量（372 mAh g-1）已成为进一步提高性能的瓶颈。因此，开发性能优异的新型负极材料迫在眉睫。在此，我们提出了结晶-非晶双相 CaVO3 纳米复合材料作为 LIB 阳极材料。得益于 CaVO3 稳定的包晶结构和高导电性，该纳米复合材料遵循插层机制，因此在 5000 次循环过程中不会出现容量衰减。此外，由于无定形高价氧化钒提供的多电子转移，该纳米复合材料可提供 442.8 mAh g-1 的高比容量，并具有 0.95 V 的合适平均工作电位。通过纳米粒子自发氧化构建纳米复合材料的巧妙策略有望扩展到透辉石氧化物家族，从而激发更多高性能锂离子电池阳极的开发。

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.