Impact of Lithium-Free Borate Additives on the Cycle Life and Calendar Aging of Silicon-Based Lithium-Ion Batteries.

ABSTRACT: Silicon-anode lithium-ion batteries (LIBs) suffer from limited cycle life and poor calendar life, constraining their large-scale commercialization. Integrating additives into electrolytes is a simple and cost-effective strategy to improve these aspects. The effects of lithium-free boron-based additives on cycling and calendar performance of high-loading Si-anode LIBs remain largely unexplored. In this work, the influence of five Li-free borate additives, each with distinct molecular structures and elemental compositions, is systematically investigated. All additives enhance cycle life to varying extents. Notably, the addition of 1 v/v% tri(2,2,2-trifluoroethyl) borate to the baseline electrolyte nearly doubles the cycle life at 50% state of health. This enhancement is attributed to three k

SUBMITTER: Li D 

PROVIDER: S-EPMC12825453 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature