Strategy for enhancement of magnesium ion diffusion in a vanadium tetra sulfide-layered structure for rechargeable magnesium batteries

文献信息

发布日期 2023-10-25
DOI 10.1039/D3TA04634F
影响因子 12.732
作者

Muhammad Kashif Naseem, Mian Azmat, Changliang Du, Rong Jiang, Hajra, Youqi Zhu, Meishuai Zou, Chuanbao Cao


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摘要

A theoretically higher volumetric capacity, natural abundance, low cost, dendrite free and ecofriendly rechargeable magnesium battery system (RMBS) is considered to be a promising candidate device for future commercialization. However, low capabilities due to the sluggish diffusion kinetics due to the highly polarized Mg2+ ions of cathodic materials are hindering the potential application of such devices. Considering the key role of diffusive contribution, we conducted systematic research to enhance the diffusion contribution of Mg2+ ions in vanadium tetrasulfide (VS4). Nanosized particles were synthesized to provide additional surface area for Mg2+ ions. The effects of sulfur vacancies due to nickel substitution in the VS4-layered atomic structure were studied theoretically. Subsequently, it was confirmed experimentally that the layered atomic structure of VS4 was further expanded and more stable vacancies were generated after nickel substitution. As a result, enhanced diffusion of Mg2+ up to 59.35% at 0.1 mV s−1 exhibited improved cathodic performance enabling a high-performance RMBS. Moreover, these structural alterations exhibited improved electrochemical properties on a copper current collector, such as 5%Ni–VS4, which displayed a remarkable discharge capacity of 477.9 mA h g−1 at 100 mA g−1 that was sustained for up to 1500 cycles at a current density of 500 mA g−1. Hence, the proposed strategy is an effective way forward to develop an efficient VS4 cathode for an RMBS.

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来源期刊

Journal of Materials Chemistry A

Journal of Materials Chemistry A
CiteScore: 19.5
自引率: 4.7%
年发文量: 2211

Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment

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