Flexible C₆BN Monolayers As Promising Anode Materials for High-Performance K-Ion Batteries.

ABSTRACT: K-ion batteries attract extensive attention and research efforts because of the high energy density, low cost, and high abundance of K. Although they are considered suitable alternatives to Li-ion batteries, the absence of high-performance electrode materials is a major obstacle to implementation. On the basis of density functional theory, we systematically study the feasibility of a recently synthesized C₆BN monolayer as anode material for K-ion batteries. The specific capacity is calculated to be 553 mAh/g (K₂C₆BN), i.e., about twice that of graphite. The C₆BN monolayer is characterized by high strength (in-plane stiffness of 309 N/m), excellent flexibility (bending strength of 1.30 eV), low output voltage (average open circuit voltage of 0.16

SUBMITTER: Xiang P 

PROVIDER: S-EPMC7467560 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature