Dual Regulation on Structure-Interface Enables Coal-Tar-Pitch-Based Hard Carbon Anodes with High Rate and Storage Performance for Sodium Ion Batteries.

ABSTRACT: Coal-tar-pitches-based hard carbons (HCs) are regarded as promising anode materials for sodium-ion batteries (SIBs). However, designing optimal microstructures and surface chemical states of carbon anodes to enhance Na⁺ diffusion kinetics remains a key challenge for superior sodium storage. Herein, a novel strategy of molecular crosslinking-coupled chemical vapor deposition (CVD) with further post-heat treatment is proposed. This approach utilizes molecular cross-linking to restrict the strong π-π interactions among the aromatic rings of polycyclic aromatic hydrocarbons (PAHs) in the coal tar pitches (CTPs) when simultaneously introducing the developed pore structures with large interlayer spacing into the carbon matrix. The surface carbon coatings by the CVD method can facilita

SUBMITTER: Xu X 

PROVIDER: S-EPMC12752629 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature