Bi-Induced Few-Layered Graphite Frameworks as Efficient Interfacial Transitions Toward Ultrafast Potassium Storage.

ABSTRACT: Bismuth is a promising anode material for potassium-ion batteries due to its green, non-toxic and high theoretical capacity (384 mAh g^-1). However, the sluggish reaction kinetics and excessive volume expansion during cycling limit its practical application. Herein, Bi-induced few-layered graphite frameworks are in situ encapsulated on the surface of Bi nanoparticles, based on the mechanism of graphitization by rearrangement of interstitial carbon atoms during the nucleation process of Bi, while these composite particles are embedded in Bi-doped porous carbon fibers composite. The graphite frameworks can stabilize the structure while serving as an efficient interfacial transfer layer, enabling rapid transport of both potassium ions and electrons. Bi atoms doped into the carbon fi

SUBMITTER: Yang B 

PROVIDER: S-EPMC12165019 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature