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<p>The high flammability problem of Li metal negative electrode has persistently impeded the safe application of energy-dense Li metal batteries. Conventional flame-retardant mixing strategy also fails in addressing this challenge because of the severe function-destroying corrosion reaction between flame retardant and Li metal. In this work, we propose a layered graphene oxide/flame retardant/lithiophilic ZnO layer/Li metal negative electrode for eliminating the corrosion between Li metal and flame retardant, while smartly releasing the thermal-triggered flame-retarding gases for covering and bonding with Li metal against combustion. This smart-flame-retard layered Li negative electrode afford 2677.78% prolonged battery cycle life than the pure Li negative electrode after 600 °C ignition, and 94.68% suppressed side reaction than conventional flame retardant-Li mixture during regular electrode operation. This resolution on the flammability challenge of Li metal negative electrode presents a meaningful advancement for safe Li metal battery construction.</p>

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Smart-flame-retarding layered composite Li negative electrode for safe Li metal battery

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年3月26日

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  • Haoying Qi,
  • Lequan Deng,
  • Yaoyao Liu,
  • Zhaofen Wang,
  • Lu-Tan Dong,
  • Jun Zhan,
  • Xianglin Yin,
  • Yushuang Yang,
  • Haichen Huang,
  • Xing-Min Yu,
  • Bo Fang,
  • Peihua Zhu,
  • Yuanhua Sang,
  • Jian-Jun Wang,
  • Shuhua Wang,
  • Zhaoke Zheng,
  • Chao Gao,
  • Hong Liu,
  • Hao Chen

摘要

The high flammability problem of Li metal negative electrode has persistently impeded the safe application of energy-dense Li metal batteries. Conventional flame-retardant mixing strategy also fails in addressing this challenge because of the severe function-destroying corrosion reaction between flame retardant and Li metal. In this work, we propose a layered graphene oxide/flame retardant/lithiophilic ZnO layer/Li metal negative electrode for eliminating the corrosion between Li metal and flame retardant, while smartly releasing the thermal-triggered flame-retarding gases for covering and bonding with Li metal against combustion. This smart-flame-retard layered Li negative electrode afford 2677.78% prolonged battery cycle life than the pure Li negative electrode after 600 °C ignition, and 94.68% suppressed side reaction than conventional flame retardant-Li mixture during regular electrode operation. This resolution on the flammability challenge of Li metal negative electrode presents a meaningful advancement for safe Li metal battery construction.