Structure evolution and energy storage mechanism of Zn<sub>3</sub>V<sub>3</sub>O<sub>8</sub> spinel in aqueous zinc batteries
Haocong Yi, Changjian Zuo, Hengyu Ren, Wenguang Zhao, Yuetao Wang, Shouxiang Ding, Yang Li, Runzhi Qin, Lin Zhou, Lu Yao, Shunning Li, Qinghe Zhao, Feng Pan
Abstract
can be achieved. The optimized test conditions give rise to progressive structure evolution from bulk to nano-crystalline spinel, which leads to capacity activation in the first few cycles and stable cycling performance afterward. Furthermore, the energy storage mechanism in this nano-crystalline spinel is interpreted as the co-intercalation of zinc ions and protons with some water. This work provides a new viewpoint of the structure evolution and correlated energy storage mechanism in spinel-type host materials, which would benefit the design and development of next-generation batteries.