硫氧化辅助的自动供电生产系统基于使用过的离子电池的高效催化剂
Boran Wang1, Xiao Xiao1, Junfeng Li1
1Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, People's Republic of China.
概括
这项研究介绍了一种自动供电系统,该系统将废水和耗尽的离子电池转化为清洁水和燃料. 来自回收电池的先进催化剂可实现高效的能源生产和环境修复.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
背景情况:
- 使用过的离子电池 (LIB) 带来了环境挑战.
- 工业废水通常含有有害的硫.
- 可持续的能源解决方案需要高效的资源利用和废物回收利用.
研究的目的:
- 开发一种自动供电的电催化系统,用于同时处理废水和生产气.
- 为了利用消耗的LIB用于催化剂的准备,降低成本和环境影响.
- 为了证明含硫的废水转化为有价值的产品,如清洁水和.
主要方法:
- 硫化物燃料电池 (SFC) 和电催化硫氧化反应 (SOR) 辅助生产电解器 (ESHPE) 的制造.
- 从废弃的LiCoO2中制备双功能Co9S8催化剂,用于SOR和演化反应 (HER).
- 合成Fe-N-P编的碳纳米管阵列封装Fe2P (C-ZIF/sLFP) 催化剂从废弃的LiFePO4进行氧化还原反应.
主要成果:
- 在ESHPE中,Co9S8催化剂对SOR和HER表现出极好的活性,电池低电压为0.426V,在20 mA cm-2处.
- SFC 实现了 0.69 V 的开放电路电压,并在 20 mA cm-2.2 处在 300 小时内表现出稳定的放电.
- 集成自动供电系统实现了0.44毫升cm-2分-1.1的高生产率.
结论:
- 一个新的自动供电系统有效地将含硫的废水转化为净化水和燃料.
- 来自已使用的LIBs的高性能催化剂使成本高效和可持续的运行成为可能.
- 这种方法为经济效率,环境修复和可持续发展提供了一个有希望的途径.
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