Highly Dispersed Cobalt Nanoparticles Embedded in Nitrogen-Doped Graphitized Carbon for Fast and Durable Potassium Storage.

ABSTRACT: Potassium-ion batteries (KIBs) have great potential for applications in large-scale energy storage devices. However, the larger radius of K⁺ leads to sluggish kinetics and inferior cycling performance, severely restricting its practical applicability. Herein, we propose a rational strategy involving a Prussian blue analogue-derived graphitized carbon anode with fast and durable potassium storage capability, which is constructed by encapsulating cobalt nanoparticles in nitrogen-doped graphitized carbon (Co-NC). Both experimental and theoretical results show that N-doping effectively promotes the uniform dispersion of cobalt nanoparticles in the carbon matrix through Co-N bonds. Moreover, the cobalt nanoparticles and strong Co-N bonds synergistically form a three-dimensional condu

SUBMITTER: Shi X 

PROVIDER: S-EPMC8187504 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature