Advanced Energy Materials· Daehun Han,
Hyerim Jang,
Junyoung Heo,
Kyungjun Kim,
Hawon Gu,
Jun‐Woo Park,
Sang‐Min Lee·· 16 天前AI 评分26
铁电β-PVDF/氟化氮化硼负极保护层：内建电场引导低吸附抑制锂硫电池多硫化物副反应
Internal Electric Field‐Guided, Low‐Adsorption Ferroelectric Anode Protective Layers for Sustainable Suppression of Polysulfide Side Reactions in Lithium–Sulfur Batteries
模型导读
一种掺入氟化硼纳米片的极化铁电β-PVDF层（PPFBN）通过内建电场促进Li⁺向负极传输并阻挡多硫化物阴离子迁移，其本征低多硫化物亲和力可维持保护层长期功能。Li/Li对称电池在含多硫化物电解液中以2 mA cm⁻²、2 mAh cm⁻²稳定循环超1000 h；全电池0.5 C下500次循环容量保持80.4%，贫电解液条件下循环寿命较裸锂延长150次以上。
来源：Advanced Energy Materials · advanced.onlinelibrary.wiley.com