One-Step Sintering Coating toward Air-Stable O3-Type Layered Oxide Cathodes for Sodium-Ion Batteries

IF 8.3 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Materials & Interfaces Pub Date : 2025-04-22 DOI:10.1021/acsami.5c01356

Yibo Pan, Xing Zhou, Deda Peng, Run Liu, Yongyuan Zhou, Jin Han, Tiefeng Liu, Ya You

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Abstract

Layered oxides are one of the most promising cathode materials for sodium-ion batteries due to their high theoretical capacity, high voltage platform, and low manufacturing cost. However, the poor air stability severely limits the practical application of the O3-type layered oxide. In this study, a simple one-step sintering coating method is explored to construct a uniform and dense heavy metal oxide (Sb₂O₃) coating layer on Na(Ni_1/3Fe_1/3Mn_1/3)O₂ (NFM333), and the coating layer effectively improved the air stability of NFM333 by mitigating the contact of H₂O and CO₂ in the air. Consequently, NFM333–0.5 wt % Sb₂O₃ obtains a specific capacity of 92.1 mAh g^–1 with a capacity retention of 84.6% after 200 cycles at 1C after exposure in air with 60% humidity for 2 days, while NFM333 without a coating layer has a specific capacity of just 85.4 mAh g^–1 with a capacity retention of 65.3% after 200 cycles at 1C after the same exposure handling. This study presents a facile coating method to improve the air stability of O3-type NFM33, which provides insights for the development of air-stable NFM333.

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钠离子电池空气稳定o3型层状氧化物阴极的一步烧结涂层

层状氧化物具有理论容量大、电压平台高、制造成本低等优点，是钠离子电池极具发展前景的正极材料之一。然而，空气稳定性差严重限制了o3型层状氧化物的实际应用。本研究探索了一种简单的一步烧结镀膜方法，在Na(Ni1/3Fe1/3Mn1/3)O2 （NFM333）上构建均匀致密的重金属氧化物（Sb2O3）镀膜层，该镀膜层通过减轻空气中H2O和CO2的接触，有效提高了NFM333的空气稳定性。因此，NFM333 - 0.5 wt % Sb2O3在60%湿度的空气中暴露2天后，在1C下200次循环后，其比容量为92.1 mAh g-1，容量保留率为84.6%，而没有涂层的NFM333在相同的暴露处理下，在1C下200次循环后，其比容量仅为85.4 mAh g-1，容量保留率为65.3%。本研究提出了一种简便的涂层方法来提高o3型NFM33的空气稳定性，为空气稳定性NFM333的发展提供了参考。

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来源期刊

ACS Applied Materials & Interfaces 工程技术-材料科学：综合

CiteScore

16.00

自引率

6.30%

发文量

4978

审稿时长

1.8 months

期刊介绍： ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.