找靠谱仪器,就上利发国际娱乐平台~

锂阳极中和频光谱SFG检测产品配置单(其它光谱仪) 【刊物发表】

  • 应用领域: 电池/电源
  • 检测样品: 锂电池
  • 检测项目:理化性能
  • 浏览次数:7 次
  • 下载次数:0 次
  • 发布时间:2019-07-09
  • 参考标准:无需
采用立陶宛Ekspla公司的SFG和频光谱测量系统对自组装单层膜实现锂阳极的浆料涂敷的过程进行了实验研究。
  • 配置
  • 品牌型号
  • 参考报价

Li metal has long been considered as the ultimate anodic material for high-energy-density batteries. Protection of Li metal in electrochemical cycling and in the manufacturing environment is critical for practical applications. Here, we present the passivation of the Li metal?carbon nanotube (CNT) composite with molecular self-assembly of a longchain
aliphatic phosphonic acid. The dynamics of the self-assembly process is investigated with sum-frequency generation spectroscopy (SFG). The aliphatic phosphonic acid molecules self-assemble on the Li metal surface via the lithium phosphate bonding, while the well-aligned long chains of the molecules help to prevent corrosion of lithium by oxygen and water in the
air. As a result, the self-assembled monolayer (SAM) passivated Li?CNT composite displays excellent stability in dry or even humid air, and could be slurry-coated with organic solvents. The resulting slurry-coated Li anode exhibits a high Coulombic efficiency of 98.8% under a 33% depth of discharge (DOD) at a 1C rate in full battery cycling. The concept of molecular self-assembly on Li metal and the stability of the resulting SAM layer open vast possibilities of designed reagents for surface passivation of Li, which may eventually pave the way for practical application of Li metal in secondary batteries.

  • 点赞 ()

  • 收藏

  • 分享

  • 下载

贡献者的其他方案
方案贡献者

北京欧兰科技发展有限公司

仪信通银牌会员

解决方案总数:0

方案浏览总量: 0

按类找方案