Porous Carbon-Coated Fe-Doped MnO as High-Performance Cathode for Aqueous Zinc Ion Batteries

IF 3.6 4区工程技术 Q3 ENERGY & FUELS

Energy technology Pub Date : 2024-12-28 DOI:10.1002/ente.202401690

Guangxing Pan, Zhenyuan Wang, Jichuan Zhang, Miaomiao Cao, Ling Zhang, Jiaheng Zhang

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Abstract

Ion doping is a feasible approach to enhance the stability and cycling performance of manganese-based materials. However, limited research has been conducted on Fe-doped manganese-based oxides. The present study represents the first successful synthesis of a composite material, namely porous carbon-coated Fe-doped MnO (Fe-MnO/C), achieved through annealing FeMn-based metal-organic frameworks. The electrochemical performance is enhanced by Fe doping, as the presence of MnOFe bonds facilitates charge transfer and mitigates structural collapse, thereby resulting in improved rate capability and cycling stability. The Fe-MnO/C-3 cathode achieves a maximum energy density of 249.6 Wh kg⁻¹ at a power density of 130.6 W kg⁻¹ and demonstrates a high specific capacity of 134 mAh g⁻¹ even after undergoing 800 cycles at 1.0 A g⁻¹. The study presents a cost-effective and convenient approach to fabricate a high-performance cathode for aqueous zinc-ion batteries.

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来源期刊

Energy technology ENERGY & FUELS-

CiteScore

7.00

自引率

5.30%

发文量

审稿时长

1.3 months

期刊介绍： Energy Technology provides a forum for researchers and engineers from all relevant disciplines concerned with the generation, conversion, storage, and distribution of energy. This new journal shall publish articles covering all technical aspects of energy process engineering from different perspectives, e.g., new concepts of energy generation and conversion; design, operation, control, and optimization of processes for energy generation (e.g., carbon capture) and conversion of energy carriers; improvement of existing processes; combination of single components to systems for energy generation; design of systems for energy storage; production processes of fuels, e.g., hydrogen, electricity, petroleum, biobased fuels; concepts and design of devices for energy distribution.