Structural modulation of NH4V4O10 cathode materials for low-temperature zinc-ion energy-storage devices

IF 6 2区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Materials Chemistry Frontiers Pub Date : 2024-11-26 DOI:10.1039/D4QM00890A

Yaotong Li, Chunru Zhao, Wei Wang, Xiang Wu and Yudai Huang

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Abstract

With the characteristics of nontoxicity and environmental benignity, aqueous zinc ion batteries (AZIBs) are rapidly emerging as potential competitors for high-performance energy-storage systems. Nevertheless, several issues hinder their further development, such as the sluggish electrochemical activity and inevitable dissolution of cathode materials. In this work, we introduced oxygen defects (O_d) into the NH₄V₄O₁₀ lattice, which facilitated the transport velocity of Zn²⁺ ions and enhanced their electrical conductivity. Zn//NHVO-O_d-1 batteries showed a reversible capacity of 475.3 mA h g⁻¹ at 0.2 A g⁻¹. At low temperature (0 °C), the cells also demonstrated a capacity retention of 100% after 1000 cycles at 1.0 A g⁻¹. Assembled soft-package devices presented favorable mechanical resilience at different bending conditions.

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低温锌离子储能装置正极材料NH4V4O10的结构调制

水性锌离子电池（azib）以其无毒、环保的特点，正迅速成为高性能储能系统的潜在竞争对手。然而，一些问题阻碍了它们的进一步发展，如电化学活性缓慢和阴极材料不可避免的溶解。在这项工作中，我们在NH4V4O10晶格中引入氧缺陷（Od），促进了Zn2+离子的输运速度，提高了它们的导电性。Zn//NHVO-Od-1电池在0.2 a g -1时的可逆容量为475.3 mA h g -1。在低温（0°C）下，在1.0 a g−1下循环1000次后，电池的容量保持率也达到100%。装配软封装器件在不同弯曲条件下均表现出良好的机械回弹性。

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来源期刊

Materials Chemistry Frontiers Materials Science-Materials Chemistry

CiteScore

12.00

自引率

2.90%

发文量

313

期刊介绍： Materials Chemistry Frontiers focuses on the synthesis and chemistry of exciting new materials, and the development of improved fabrication techniques. Characterisation and fundamental studies that are of broad appeal are also welcome. This is the ideal home for studies of a significant nature that further the development of organic, inorganic, composite and nano-materials.