Co₉S₈@carbon nanofiber as the high-performance anode for potassium-ion storage.

ABSTRACT: Thanks to their intrinsic merits of low cost and natural abundance, potassium-ion batteries have drawn intense interest and are regarded as a possible replacement for lithium-ion batteries. The larger radius of potassium, however, provides slow mobility, which normally leads to sluggish diffusion of host materials and eventual expansion of volume, typically resulting in electrode failure. To address these issues, we design and synthesize an effective micro-structure with Co₉S₈ nanoparticles segregated in carbon fiber utilizing a concise electrospinning process. The anode delivers a high K⁺ storage capacity of 721 mA h g^-1 at 0.1 A g^-1 and a remarkable rate performance of 360 mA h g^-1 at a high current density of 3 A g^-1

SUBMITTER: Xin W 

PROVIDER: S-EPMC8698690 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature