MOF-Derived Fe2CoSe4@NC and Fe2NiSe4@NC Composite Anode Materials towards High-Performance Na-Ion Storage

IF 3.1 4区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Inorganics Pub Date : 2024-06-12 DOI:10.3390/inorganics12060165

Hangxuan Xie, Wei Zhang, Chao Wang, Shangcheng Zhao, Zhentao Hao, Xiaolian Huang, Kanghua Miao, Xiongwu Kang

引用次数: 0

Abstract

Binary transition metal selenides (BTMSs) are more promising than single transition metal selenides (TMS) as anode materials of sodium-ion batteries (SIBs). However, it is still very challenging to prepare high-performance BTMSs in the pure phase, instead of a mixture of two TMSs. In this study, a binary metal center-based MOF derived selenization strategy was developed to prepare iron–cobalt selenide (Fe2CoSe4@NC) and iron–nickel selenide (Fe2NiSe4@NC) nanocomposites in the single phase and when wrapped with carbon layers. As the anode material of SIBs, Fe2CoSe4@NC exhibits higher long-term cycling performance than Fe2NiSe4@NC, maintaining a capacity of 352 mAh g−1 after 2100 cycles at 1.0 A g−1, which is ascribed to the higher percentage of the nanopores, larger lattice spacing, and faster Na+ diffusion rate in the electrode materials of the former rather than the latter.

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MOF衍生的Fe2CoSe4@NC和Fe2NiSe4@NC复合负极材料实现高性能钠离子存储

与单一过渡金属硒（TMS）相比，二元过渡金属硒（BTMS）更有希望成为钠离子电池（SIB）的负极材料。然而，要制备高性能的纯相 BTMS，而不是两种 TMS 的混合物，仍然非常具有挑战性。本研究开发了一种基于二元金属中心的 MOF 硒化策略，用于制备单相和包裹碳层的硒化铁钴（Fe2CoSe4@NC）和硒化铁镍（Fe2NiSe4@NC）纳米复合材料。作为 SIB 的阳极材料，Fe2CoSe4@NC 比 Fe2NiSe4@NC 具有更高的长期循环性能，在 1.0 A g-1 的条件下循环 2100 次后仍能保持 352 mAh g-1 的容量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Inorganics Chemistry-Inorganic Chemistry

CiteScore

2.80

自引率

10.30%

发文量

193

审稿时长

6 weeks

期刊介绍： Inorganics is an open access journal that covers all aspects of inorganic chemistry research. Topics include but are not limited to: synthesis and characterization of inorganic compounds, complexes and materials structure and bonding in inorganic molecular and solid state compounds spectroscopic, magnetic, physical and chemical properties of inorganic compounds chemical reactivity, physical properties and applications of inorganic compounds and materials mechanisms of inorganic reactions organometallic compounds inorganic cluster chemistry heterogenous and homogeneous catalytic reactions promoted by inorganic compounds thermodynamics and kinetics of significant new and known inorganic compounds supramolecular systems and coordination polymers bio-inorganic chemistry and applications of inorganic compounds in biological systems and medicine environmental and sustainable energy applications of inorganic compounds and materials MD