首页|Membrane-less MoO3-x@TiO2-bromine battery with excellent rate capability and cyclic stability
Membrane-less MoO3-x@TiO2-bromine battery with excellent rate capability and cyclic stability
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
万方数据
Bromine has attracted significant attention as a cathode material for aqueous batteries due to its high reduction potential of 1.05 V(Br-3+2e-↔ 3Br-),impressive theoretical specific capacity of 223 mA h g-1,and rapid reaction kinetics in the electrolyte.However,searching for compatible anode materials to match with bromine has posed a challenge due to its highly corrosive nature.In this study,we developed oxygen-deficient MoO3 with TiO2 coating(referred to as MoO3-x@TiO2)as an anode mate-rial to pair with a bromine cathode in static full batteries.The oxygen deficiency contributes to enhanced electronic and protonic diffusion within the MoO3-x lattice,while the TiO2 coating mitigates structural dissolution and proton trapping during cycling.The MoO3-x@TiO2 demonstrates fast charge storage kinetics and excellent resistance to bromine corrosion.The impressive compatibility between MoO3-x@TiO2 and bromine enables the construction of membrane-less full batteries with exceptional rate capability and cyclic stability.The MoO3-x@TiO2-bromine battery achieves an energy density of 70.8 W h kg-1 at a power density of 328.1 W kg-1,showcasing an impressive long-term cyclic life of 20,000 cycles.Our study provides valuable insights for the development of high-performance aqueous secondary batteries.
School of Materials Science and Engineering,Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials,South China University of Technology,Guangzhou 510640,Guangdong,China
National Key Research and Development Program of ChinaGuangdong Basic and Applied Basic Research Foundation
NETL
NSTL
万方数据
