A High-Capacity Ammonium Vanadate Cathode for Zinc-Ion Battery.

ABSTRACT: Given the advantages of being abundant in resources, environmental benign and highly safe, rechargeable zinc-ion batteries (ZIBs) enter the global spotlight for their potential utilization in large-scale energy storage. Despite their preliminary success, zinc-ion storage that is able to deliver capacity > 400 mAh g^-1 remains a great challenge. Here, we demonstrate the viability of NH₄V₄O₁₀ (NVO) as high-capacity cathode that breaks through the bottleneck of ZIBs in limited capacity. The first-principles calculations reveal that layered NVO is a good host to provide fast Zn²⁺ ions diffusion channel along its [010] direction in the interlayer space. On the other hand, to further enhance Zn²⁺ ion intercalation kinetics and long

SUBMITTER: Li Q 

PROVIDER: S-EPMC7770878 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature