4.7 Article

Zinc-ion battery based on heteroatom-doped improved-quality graphene film as a functional current collector

期刊

INTERNATIONAL JOURNAL OF ENERGY RESEARCH
卷 46, 期 12, 页码 16658-16669

出版社

WILEY
DOI: 10.1002/er.8328

关键词

cathode; current collector; graphene film; zinc-ion batteries

资金

  1. National Research Foundation of Korea [2020R1C1C1010611]
  2. National Research Foundation of Korea [2020R1C1C1010611] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

向作者/读者索取更多资源

Due to their safety, low cost, and ease of assembly, zinc-ion batteries (ZIBs) have gained attention as promising energy storage devices. However, the use of carbon-based current collectors to enhance the energy storage performance of ZIBs has limitations. To overcome this, functionalizing the surface of the current collectors to enhance their chemical activity has emerged as a promising method for future ZIBs.
Owing to their acceptable level of safety performances, low cost, and easy assembly, zinc-ion batteries (ZIBs) have attracted attention as encouraging energy storage devices. However, the intrinsic deficiency of the carbon-based current collector used to enhance the energy storage performances of ZIBs has limited the further application of ZIBs. To address this, the technical streaming of current collectors via the functionalization of their surface to enhance their chemical activity has appeared as a promising method for future-oriented ZIBs. Here, a fluorine and nitrogen codoped improved-quality graphene film was fabricated as a functional current collector for ZIBs, and the synergistic effect of the increased electrical conductivity and enhanced wettability of the current collector on the energy storage performance of ZIBs was demonstrated. The results revealed that the fabricated ZIB exhibited a high specific capacity of 380 mAh/g at a current density of 0.3 A/g, a remarkable long cycle life with a capacity retention of 80.6% for up to 150 cycles at a current density of 0.5 A/g, and a high energy density of 135 W h/kg and a power density from 270 W/kg. Moreover, the solid-state ZIB exhibited an outstanding mechanical flexibility and safety.

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