Mechanism and cost of Zn substitution to boost the specific capacity of NaNi1/3Fe1/3Mn1/3O2 for sodium-ion batteries

IF 7.9 2区工程技术 Q1 CHEMISTRY, PHYSICAL

Journal of Power Sources Pub Date : 2025-07-10 DOI:10.1016/j.jpowsour.2025.237872

Xuan Wang , Qinqhua Tian , Xueyi Guo , Xinming Fan , Kui Meng

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Abstract

This paper explores the mechanism and cost of partially replacing nickel with zinc to boost the specific capacity of NaNi_1/3Fe_1/3Mn_1/3O₂ cathode material for sodium-ion batteries. The specific capacity of Na_0.9Ni_4/15Fe_1/3Mn_1/3Zn_1/15O₂ material increases by lowering the voltage for the P3-OP2 phase transition within the voltage range of 2.0–4.0 V, although its theoretical capacity reduces due to the decline in optimal sodium content and the electrochemical inactivity of zinc. Besides, the reversible P3-OP2 phase transition shows negligible effects on its cycling performance. However, the OP2-O3′ phase transition, coupled with the oxidation and release of lattice oxygen, occurs at a cut-off voltage exceeding 4.0 V, which deteriorates its cycle performance. The paper presents a novel approach for designing an O3-type cathode with a high specific capacity, which maximizes the reversible phase transition within the targeted voltage range by selecting appropriate components.

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锌取代提高钠离子电池NaNi1/3Fe1/3Mn1/3O2比容量的机理及成本

本文探讨了用锌部分替代镍提高钠离子电池负极材料NaNi1/3Fe1/3Mn1/3O2比容量的机理和成本。在2.0 ~ 4.0 V电压范围内，降低P3-OP2相变电压，Na0.9Ni4/15Fe1/3Mn1/3Zn1/15O2材料的比容量增加，但理论容量因最佳钠含量下降和锌的电化学不活性而降低。此外，可逆的P3-OP2相变对其循环性能的影响可以忽略不计。然而，在超过4.0 V的截止电压下，OP2-O3 '发生相变，并伴随着晶格氧的氧化和释放，使其循环性能恶化。本文提出了一种设计高比容量o3型阴极的新方法，通过选择合适的元件，在目标电压范围内最大限度地实现可逆相变。

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来源期刊

Journal of Power Sources 工程技术-电化学

CiteScore

16.40

自引率

6.50%

发文量

1249

审稿时长

36 days

期刊介绍： The Journal of Power Sources is a publication catering to researchers and technologists interested in various aspects of the science, technology, and applications of electrochemical power sources. It covers original research and reviews on primary and secondary batteries, fuel cells, supercapacitors, and photo-electrochemical cells. Topics considered include the research, development and applications of nanomaterials and novel componentry for these devices. Examples of applications of these electrochemical power sources include: • Portable electronics • Electric and Hybrid Electric Vehicles • Uninterruptible Power Supply (UPS) systems • Storage of renewable energy • Satellites and deep space probes • Boats and ships, drones and aircrafts • Wearable energy storage systems