Data underlying thesis chapter and paper: Fluorine-free Lithium Ion Batteries: A Working Alternative

Repository for paper Fluorine-free Lithium Ion Batteries: A Working Alternative. Abstract of paper:Current commercial battery designs contain fluorinated materials as binders and electrolyte salts to ensure high electrochemical and thermal stability. Upcoming regulations in Europe and the US restrict the manufacturing of such materials, as their persistence in drinking water and soil can cause long term ecological harm. In this perspective, we showcase a completely fluorine-free battery design which has similar performance compared to commercial standards, while using aqueous processed LiNi_0.8Mn_0.1Co_0.1O₂ (NMC811) and graphite as cathode and anode active materials respectively. The cell shows 98% retained capacity after 600 cycles at room temperature, indicating good stability of active material with non-fluorinated binders. The charge rate performance (69% retained capacity at 1C, 1.5 mAh/cm²) could be improved by combining two fluorine-free salts (67% retained capacity at 1C with 2.5 times the loading, 3.3 mAh/cm²). This work illustrates that fluorine-free cell designs show good battery performance over awide potential window.

本数据仓库对应论文《无氟锂离子电池：一种实用替代方案》（Fluorine-free Lithium Ion Batteries: A Working Alternative）。论文摘要如下：当前商用锂离子电池的配方中，以含氟材料作为粘结剂与电解质盐，以保障优异的电化学稳定性与热稳定性。欧美地区即将出台的相关法规将限制此类材料的生产，因其在饮用水与土壤中持久残留会造成长期生态危害。本展望类学术文章展示了一种完全无氟的电池设计方案，其性能可媲美商用标准产品，且分别采用水相加工的镍钴锰酸锂（LiNi₀.₈Mn₀.₁Co₀.₁O₂，缩写NMC811）与石墨作为正极与负极的活性材料。该电池在室温环境下历经600次循环后容量保持率达98%，证实了非氟粘结剂与活性材料间具备良好的相容性。其充电倍率性能表现为：在1C倍率、面容量1.5 mAh/cm²的条件下，容量保持率为69%；若将活性材料负载量提升至原有的2.5倍（即3.3 mAh/cm²）并搭配两种无氟盐使用，1C倍率下的容量保持率可达67%，说明倍率性能可得到进一步优化。本研究表明，无氟电池设计在宽电位窗口范围内可展现出优异的电池性能。