Ultrahigh-Power Pseudocapacitors Based on Ordered Porous Heterostructures of Electron-Correlated Oxides.

ABSTRACT: Nanostructured transition-metal oxides can store high-density energy in fast surface redox reactions, but their poor conductivity causes remarkable reductions in the energy storage of most pseudocapacitors at high power delivery (fast charge/discharge rates). Here it is shown that electron-correlated oxide hybrid electrodes made of nanocrystalline vanadium sesquioxide and manganese dioxide with 3D and bicontinuous nanoporous architecture (NP V₂O₃/MnO₂) have enhanced conductivity because of metallization of electron-correlated V₂O₃ skeleton via insulator-to-metal transition. The conductive V₂O₃ skeleton at ambient temperature enables fast electron and ion transports in the entire electrode and facilitates charge tr

SUBMITTER: Lang XY 

PROVIDER: S-EPMC5066634 | biostudies-literature | 2016 May

REPOSITORIES: biostudies-literature