%0 Journal Article
%T A Hollow-Structured Manganese Oxide Cathode for Stable Zn-MnO2 Batteries
%A Jianming Li
%A Lianjie Qin
%A Ruiguo Cao
%A Shiyang Wang
%A Shuhong Jiao
%A Xiaotong Guo
%A Xu Jin
%A Yehu Han
%A Yue Lin
%A Zhanwu Lei
%J Archive of "Nanomaterials".
%D 2018
%R 10.3390/nano8050301
%X Aqueous rechargeable zinc-manganese dioxide (Zn-MnO2) batteries are considered as one of the most promising energy storage devices for large scale-energy storage systems due to their low cost, high safety, and environmental friendliness. However, only a few cathode materials have been demonstrated to achieve stable cycling for aqueous rechargeable Zn-MnO2 batteries. Here, we report a new material consisting of hollow MnO2 nanospheres, which can be used for aqueous Zn-MnO2 batteries. The hollow MnO2 nanospheres can achieve high specific capacity up to ~405 mAh g£¿1 at 0.5 C. More importantly, the hollow structure of birnessite-type MnO2 enables long-term cycling stability for the aqueous Zn-MnO2 batteries. The excellent performance of the hollow MnO2 nanospheres should be due to their unique structural properties that enable the easy intercalation of zinc ions
%K manganese oxide
%K hollow structure
%K multivalent intercalation
%K zinc ion batteries
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5977315/