An Unexpected Low‐Temperature Battery Formation Technology Enabling Fast‐Charging Graphite Anodes

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 16, 2025

Abstract The battery formation process is pivotal for constructing a solid electrolyte interphase (SEI) on graphite anodes, generally conducted at high temperatures. However, the resulting excessive SEI film causes significant lithium loss and an inferior charging rate. Herein, unconventional low‐temperature technology based innovative temperature‐responsive with anion‐dominated solvation structure low temperature validated. During cycling 5 °C, enhanced anion–cation interaction, coupled suppressed solvent decomposition, facilitates generation of thin fluoride‐rich film. Consequently, anodes exhibit 5C fast‐charging performance (198.89 mAh g −1 , 53.39% theoretical capacity), successfully overcoming rate bottleneck 2C commonly encountered in commercial realize 95.88% capacity retention after 400 cycles 0.5C. Moreover, compared to traditional high‐temperature formation, saves 52.73% (from 22.02 10.42 h) time reduces from 16.76% 7.21%. This work highlights importance opportunities utilizing as “driving force” regulating interfacial chemistry.

Язык: Английский

Boosting rate capability and cycling stability of lithium-ion batteries with high-mass-loading electrodes via printable graphene on separators

Journal of Power Sources, Год журнала: 2025, Номер 645, С. 237210 - 237210

Опубликована: Май 2, 2025

Язык: Английский