Charge storage mechanisms of a π-d conjugated polymer for advanced alkali-ion battery anodes.

ABSTRACT: The demand for fast-charging metal-ion batteries underlines the importance of anodes that work at high currents with no risk of dendrite formation. NiBTA, a one-dimensional Ni-based polymer derived from benzenetetramine (BTA), is a recently proposed promising material for safe fast-charging batteries. However, its charge-discharge mechanisms remained unclear and controversial. Here we solve the controversies by providing the first rigorous study using a combination of advanced theoretical and experimental techniques, including operando and ex situ X-ray diffraction, operando Raman spectroscopy and ex situ X-ray absorption near-edge spectroscopy (XANES). In safe potential ranges (0.5-2.0 V vs. M⁺/M, M = Li, Na or K), NiBTA offers high capacities

SUBMITTER: Kapaev RR 

PROVIDER: S-EPMC9278342 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature