Scholarlink

<p>As a promising anode material for lithium-ion batteries, the practical application of red phosphorus (RP) is hindered by its poor electrical conductivity and severe volumetric expansion during lithiation. In this work, kapok-petal-derived porous carbon was prepared by KOH-activated carbonization and then used as a host for RP through a well-established evaporation–condensation process, yielding RP@PC composites with different RP/PC mass ratios. This method was selected because it can introduce RP into the pore network while largely preserving the porous framework of the carbon host. Among the obtained samples, RP@PC21 exhibits the best overall electrochemical performance. Benefiting from the confined distribution of RP and the formation of interfacial P–O–C and P–C bonds, RP@PC21 delivers a high reversible capacity of 1544 mAh/g, retains 962.1 mAh/g after 500 cycles at 0.5 A/g, and still maintains 887.9 mAh/g after 800 cycles at 1 A/g, together with good rate capability. These results demonstrate that combining biomass-derived porous carbon with an established vapor infiltration strategy is an effective route to stabilize RP for lithium storage.</p> Graphical abstract <p></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

Red phosphorus encapsulated within hierarchical biomass-derived porous carbon for a stable anode material for lithium storage

  • 期刊论文

  • 发表日期：

    2026年5月22日

查看全文
  • Yue Li,
  • Qiuqi Li,
  • Dong Xie,
  • Zeyang Fang,
  • Zhaoqing Lin,
  • Hongbin Luo,
  • Faliang Cheng

摘要

As a promising anode material for lithium-ion batteries, the practical application of red phosphorus (RP) is hindered by its poor electrical conductivity and severe volumetric expansion during lithiation. In this work, kapok-petal-derived porous carbon was prepared by KOH-activated carbonization and then used as a host for RP through a well-established evaporation–condensation process, yielding RP@PC composites with different RP/PC mass ratios. This method was selected because it can introduce RP into the pore network while largely preserving the porous framework of the carbon host. Among the obtained samples, RP@PC21 exhibits the best overall electrochemical performance. Benefiting from the confined distribution of RP and the formation of interfacial P–O–C and P–C bonds, RP@PC21 delivers a high reversible capacity of 1544 mAh/g, retains 962.1 mAh/g after 500 cycles at 0.5 A/g, and still maintains 887.9 mAh/g after 800 cycles at 1 A/g, together with good rate capability. These results demonstrate that combining biomass-derived porous carbon with an established vapor infiltration strategy is an effective route to stabilize RP for lithium storage.

Graphical abstract