Electrolyte Modulators toward Polarization‐Mitigated Lithium‐Ion Batteries for Sustainable Electric Transportation
Xinru Li, Pengcheng Xu, Yue Tian, Alexis Fortini, Seung Ho Choi, Jinhui Xu, Xinyi Tan, Xiaoyan Liu, Gen Chen, Chen Zhang, Lü Xing, Lihua Jin, Qin‐Chao Wang, Li Shen, Yunfeng Lu
Abstract
Electric vehicles (EVs) are being adopted to replace combustion engine vehicles to reduce greenhouse gas emissions and mitigate climate change; developing batteries with high energy efficiency and long lifespan, in the context of carbon footprint and cost, are essential to ensure the successful transition. Herein, an electrolyte modulator that can effectively mitigate the polarization of lithium-ion batteries, leading to dramatically improved energy efficiency and lifespan, is reported. Under a dynamic stress test that mimics the operations of EVs, commercial pouch cells with a low concentration of electrolyte modulator (0.2 wt% of the electrolyte) exhibit enhanced energy efficiency (87.5% vs 80.4% for the first 500 testing cycles) and prolonged lifespan (fourfold improvement based on 70% energy-output retention). This work provides a simple yet effective strategy toward sustainable electrification of vehicles.