journal article·2023-11-30

Architecting a High-Energy-Density Rocking-Chair Zinc-Ion Batteries via Carbon-Wrapped Vanadium Dioxide

Dongdong Zhang, Jin Cao, Xinyu Zhang, Jiaqian Qin, Zhiyuan Zeng

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Abstract

Aqueous zinc-ion batteries (ZIBs) show great potential in large-scale energy storage applications because of their low cost and high safety features, whereas the inefficient zinc utilization and uncontrollable dendrite issue of the zinc metal anode greatly limit their energy density and cycling stability. Herein, a carbon-wrapped vanadium dioxide (VO 2 @C) core–shell composite has been prepared and utilized as an intercalated anode of “rocking-chair” ZIBs. Benefiting from the carbon shell, the charge transfer and structural stability of VO 2 @C have been significantly improved, thus delivering a specific capacity of 425 mA h g –1 at 0.1 A g –1 and a capacity retention of 94.9% after 3000 cycles at 5 A g –1, better than that of VO 2 (338 mA h g –1 and 59.2%). Further, the low Zn 2+ intercalated potential (0.54 V vs Zn 2+ /Zn) and reversible Zn 2+ intercalation/deintercalation behavior of VO 2 @C enable the successful construction of VO 2 @C||ZnMn 2 O 4 “rocking-chair” ZIBs, which achieve a capacity of 104 mA h g –1 at 0.1 A g –1 and an exceptional energy density of 96.3 W h kg –1 at 74.1 W kg –1 (based on the total weight). This research enriches the currently available options for constructing high-energy-density energy storage systems.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Advanced battery technologies research · Supercapacitor Materials and Fabrication · Advanced Battery Materials and Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China

Department of Materials Science and Engineering, State Key Laboratory of Marine Pollution, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong 999077, China

College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002, China

State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China

Center of Excellence in Responsive Wearable Materials, Metallurgy and Materials Science Research Institute, Chulalongkorn University, Bangkok 10330, Thailand

Shenzhen Research Institute, City University of Hong Kong, Shenzhen 518057, China

Funding

Thailand Science Research and Innovation · Research Grants Council, University Grants Committee · National Research Council of Thailand · Science, Technology and Innovation Commission of Shenzhen Municipality · Natural Science Foundation of Hubei Province · Chulalongkorn University

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