A research group has actually developed an advanced aqueous zinc-ion battery with an improved cycle life-span utilizing a weak magnetic field and a new VS2 material. The advancement deals with the obstacles of zinc dendrite growth and cathode material limitations. Credit: Mao Yunjie
A research study group at the Hefei Institutes of Physical Science (HFIPS) of Chinese Academy of Sciences (CAS), led by Prof. Zhao Bangchuan, developed a high-performance liquid zinc-ion battery with ultralong cycle life-span in a weak electromagnetic field.
The findings were just recently released in the journal Materials Horizons.
Aqueous zinc-ion batteries are a affordable and safe alternative to lithium-ion batteries with high theoretical capacity. Nevertheless, the restricted electrochemical performance of cathode material and zinc dendrite development on the anode reduces the energy density and cycle life of a liquid zinc-ion battery. To develop better aqueous zinc-ion batteries, its important to develop high-energy-density cathodes and reduce zinc dendrite development.
Schematic illustration and electrochemical efficiency of the Zn-VS2 AZIB.( b) Ultralong cycle performance of the vacancy-rich Zn-VS 2 AZIB. (d) Opticalphoto of an LED lamp powered by the Zn-VS2 batteries.
In this research study, the group overcame the restrictions of existing cathode products and the problem of zinc dendrite growth. They used a one-step hydrothermal approach with in-situ electrochemical defect engineering to create a VS2 product. This material had rich problems that worked in minimizing the electrostatic interaction in between zinc ions and VS2. It permitted for 3D transport of Zn2+ along both the ab plane and c-axis, resulting in excellent rate ability.
While biking stability stayed a problem due to the dendrite development, the group discovered that introducing an external magnetic field suppressed the growth and substantially improved the batterys lifespan. Running under a weak magnetic field, the high-performance Zn-VS2 battery demonstrated an ultralong cycle life expectancy and provided a high energy density and power density.
The work could have considerable ramifications for the future of energy storage technology, according to the group.
Referral: “Magneto-electrochemistry driven ultralong-life Zn-VS2 liquid zinc-ion batteries” by Yunjie Mao, Jin Bai, Jianguo Si, Hongyang Ma, Wanyun Li, Peiyao Wang, Hongli Zhang, Zhigao Sheng, Xiaoguang Zhu, Peng Tong, Xuebin Zhu, Bangchuan Zhao and Yuping Sun, 19 May 2023, Materials Horizons.DOI: 10.1039/ D3MH00303E.
A research group has actually established an advanced liquid zinc-ion battery with an improved cycle lifespan utilizing a weak magnetic field and a brand-new VS2 product. Aqueous zinc-ion batteries are a low-priced and safe option to lithium-ion batteries with high theoretical capacity. The minimal electrochemical efficiency of cathode product and zinc dendrite growth on the anode reduces the energy density and cycle life of an aqueous zinc-ion battery. To develop better liquid zinc-ion batteries, its essential to design high-energy-density cathodes and reduce zinc dendrite growth.
By Hefei Institutes of Physical Science, Chinese Academy of Sciences
August 15, 2023