Work

Regulating oxygen vacancies in ammonium vanadate electrode materials for advanced aqueous zinc ion batteries

Year: 2024

Type: article

Abstract: In the past decade, vanadates have attracted one's attention as the electrode materials for aqueous zinc ion batteries (AZIBs). Nevertheless, their structural instability and sluggish ion/electron dynamics lead to an inevitable decline in the electrochemical performance. To address these issues, we introduce oxygen vacancies into NH 4 V 4 O 10 nanosheets to improve the ion transport rate during the electrochemical reaction. The prepared NHVO-40 samples provide many active sites compared to NH 4 V 4 O 10 materials. The assembled cell delivers a capacity of 452.03 mAh g −1 at a current density of 0.2 A g −1 . It also presents a retention rate of 94.6% at 10 A g −1 after 4000 times cycling. In addition, they still possess an energy density of 332.5 Wh kg −1 at a power density of 70 W kg −1 .

Source: iScience

DOI: 10.1016/j.isci.2024.110926

Authors: Ming Zhao, Shilong Li, Xiang Wu, Lixian Sun

Institutions: Shenyang University of Technology, Guilin University of Electronic Technology

Language: English

Topic: Advanced battery technologies research

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: gold

Estimated APC paid: $3,150