Scholarlink

<p>Achieving superior tribo-negative performance beyond traditional fluorinated polymers (TFPs) is crucial for advancing triboelectric devices. In this work, we identified an approach to enhance the tribo-negative properties of TFPs via synergistic effects of C-F and C-Cl bonds, based on the significant tribo-differences observed in polyvinylidene fluoride (PVDF) based copolymers. Our findings indicate that the -CTFE unit, particularly its C-Cl bond, significantly lowers the LUMO of the copolymer system, resulting in PVDF-CTFE (PC) exhibiting the strongest tribo-negative properties. By controlling the surface Cl/F ratio via chlorine plasma treatment, it was demonstrated that a higher C-Cl content enhances electron acquisition, whereas a higher C-F content improves charge retention. The synergistic effect optimally balances triboelectric charge capture and losses, enabling PC-Cl to achieve the highest triboelectric charge density (310 µC cm<sup>-2</sup>) among PVDF copolymers. Our results will provide a versatile strategy for enhancing a wide range of tribo-negative materials.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Unveiling the synergistic mechanism of C-F and C-Cl bonds in enhancing the triboelectric performance of fluorinated polymers

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年4月7日

查看全文
  • Jinmei Liu,
  • Fanyu Zhang,
  • Jiongyao Xu,
  • Shengyang Jia,
  • Nuanyang Cui,
  • Rusen Yang,
  • Weiwei Wang,
  • Long Gu

摘要

Achieving superior tribo-negative performance beyond traditional fluorinated polymers (TFPs) is crucial for advancing triboelectric devices. In this work, we identified an approach to enhance the tribo-negative properties of TFPs via synergistic effects of C-F and C-Cl bonds, based on the significant tribo-differences observed in polyvinylidene fluoride (PVDF) based copolymers. Our findings indicate that the -CTFE unit, particularly its C-Cl bond, significantly lowers the LUMO of the copolymer system, resulting in PVDF-CTFE (PC) exhibiting the strongest tribo-negative properties. By controlling the surface Cl/F ratio via chlorine plasma treatment, it was demonstrated that a higher C-Cl content enhances electron acquisition, whereas a higher C-F content improves charge retention. The synergistic effect optimally balances triboelectric charge capture and losses, enabling PC-Cl to achieve the highest triboelectric charge density (310 µC cm-2) among PVDF copolymers. Our results will provide a versatile strategy for enhancing a wide range of tribo-negative materials.