Ultrafine Mn-rich P2-type Na0.67Fe0.1Mn0.9O2 particles via combustion synthesis as high-performance sodium-ion battery cathode

被引：0

作者：

Zhang, Qingtang ^{[1
]}

Shu, Qiqi ^{[1
]}

Lian, Fei ^{[1
]}

Du, Chunyang ^{[1
]}

Gao, Pengfei ^{[1
]}

You, Ya ^{[2
]}

机构：

[1] School of Petrochemical Engineering, Lanzhou University of Technology, Gansu Province, Lanzhou,730050, China

[2] State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Hubei Province, Wuhan,430070, China

来源：

Journal of Energy Storage | 2024年 / 87卷

基金：

中国国家自然科学基金;

关键词：

Combustion synthesis - Crystal structure - Iron compounds - Manganese compounds - Metal ions - Sodium compounds - Sodium-ion batteries - Transition metal oxides - Transition metals;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Layered transition metal oxide is considered as one of the most promising cathode materials for sodium-ion batteries due to the abundant reserves of Na, Fe, and Mn. Moreover, the trivalent Fe substitution weakens the Jahn–Teller effect and enhance the crystal structure during the de/intercalation of Na+. Herein, a series of Mn-rich P2-type Na0.67Fe0.1Mn0.9O2 (NFMO-600, NFMO-700 and NFMO-800) are prepared using combustion synthesis followed by calcinating at 600, 700 and 800 °C, respectively. As confirmed by XRD and SEM, NFMO-700 owns ultrafine high-purity crystal particles with a larger layer spacing and a smaller crystal size. Owing to these unique structures, NFMO-700 exhibits excellent electrochemical performance, delivering an impressive 179 mA h g−1 at 0.2C, with a capacity retention of 84.43 % after 100 cycles at 0.5C. © 2024 Elsevier Ltd

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