Anchoring Sn Nanoparticles in Necklace-Like B,N,F-Doped Carbon Fibers Enables Anode-Less 5V-Class Li-Metal Batteries.

ABSTRACT: Li metal batteries (LMBs), particularly with a limited Li metal anode and a 5V-class cathode, offer significantly higher energy density compared to the state-of-the-art Li-ion batteries. However, the limited Li anode poses severe challenges to cycling stability due to low efficiency and large volume expansion issues associated with Li. Herein, we design a lightweight and functionalized host composed of Sn nanoparticles embedded into necklace-like B,N,F-doped carbon macroporous fibers (Sn@B/N/F-CMFs) toward anode-less 5V-class LMBs. The macroporous framework can decrease the local current density to homogenize Li deposition and release structural stress to realize high areal capacity of over 40 mAh cm^-2. The lithiophilic B,N,F-doped carbon and Sn nanoparticles can function as hig

SUBMITTER: Tian Y 

PROVIDER: S-EPMC11933526 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature