Nature Communications (Sep 2018)
Rechargeable potassium-ion batteries with honeycomb-layered tellurates as high voltage cathodes and fast potassium-ion conductors
Abstract
The development of potassium-ion batteries requires cathode materials that can maintain the structural stability during cycling. Here the authors have developed honeycomb-layered tellurates K2 M 2TeO6 that afford high ionic conductivity and reversible intercalation of large K ions at high voltages.