Dual-Ion Stabilized Layered Structure of OVO for Zero-Strain Potassium Insertion and Extraction.

ABSTRACT: Potassium-ion batteries (KIB) have similar energy storage mechanism with lithium-ion battery, but the potassium (K) resource is rich, which shows great potential for large-scale energy storage system. Recently, the anode materials of KIB studied mainly include carbon materials, transition metal oxides, and alloy materials. The amorphous hard carbon shows the best comprehensive performance, but its intercalation potential is close to 0 V (versus K⁺ /K), which is easy to cause K dendrite and brings security risks. The oxide materials have high capacity but high intercalation potential, low first cycle efficiency, and unstable cycle. Here, based on the understanding of the K intercalation mechanism of vanadium oxides, a novel zero strain anode material with layered structure of dua

SUBMITTER: Wang J 

PROVIDER: S-EPMC9376826 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature