Pseudohexagonal Nb₂O₅ Anodes for Fast-Charging Potassium-Ion Batteries.

ABSTRACT: High-rate batteries will play a vital role in future energy storage systems, yet while good progress is being made in the development of high-rate lithium-ion batteries, there is less progress with post-lithium-ion chemistry. In this study, we demonstrate that pseudohexagonal Nb₂O₅(TT-Nb₂O₅) can offer a high specific capacity (179 mAh g^-1 ∼ 0.3C), good lifetime, and an excellent rate performance (72 mAh g^-1 at ∼15C) in potassium-ion batteries (KIBs), when it is composited with a highly conductive carbon framework; this is the first reported investigation of TT-Nb₂O₅ for KIBs. Specifically, multiwalled carbon nanotubes are strongly tethered to Nb₂O₅ via glucose-derived carbon (Nb

SUBMITTER: Chen G 

PROVIDER: S-EPMC10080539 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature