期刊
ACS APPLIED MATERIALS & INTERFACES
卷 13, 期 36, 页码 42732-42740出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c10678
关键词
Li metal anode; host materials; pore structure; metal-organic framework; batteries
资金
- Technology Development Program to Solve Climate Changes [NRF2021M1A2A2038143]
- National Research Foundation of Korea (NRF) - Ministry of Science, ICT [NRF-2019R1A2C1090693]
A spherical hollow carbon framework decorated with functional heteroatoms is designed and synthesized as a potential anode material for lithium metal batteries, offering enhanced reversibility and capability for metallic Li storage. The atomic-scale decorations of heteroatoms can effectively lower the overpotential for the nucleation and growth of metallic Li inside the hollow carbon framework, improving the cycle performance and rate capability even at high current densities.
A spherical hollow carbon framework decorated with functional heteroatoms is designed and synthesized using ultrasonic spray pyrolysis as a potential anode material for lithium metal batteries (LMBs). The pore structure of the hollow carbon framework can be tailored by melamine, which is a functional additive for integrating abundant nanopores and the uniform decoration of heteroatoms in the structure. The large surface area and pore volume of the hollow carbon framework offer enhanced reversibility and capability for metallic Li storage. In addition, the dendritic growth of Li and volume changes induced by repeated Li plating and stripping can be effectively suppressed during cycling. More importantly, atomic-scale decorations of heteroatoms can effectively lower the overpotential for the nucleation and growth of metallic Li inside the hollow carbon framework. It is mainly responsible for improving the cycle performance and rate capability, even at a high current density. Finally, the hollow carbon framework anode shows stable behavior toward Li plating and stripping without significant capacity fading in the LMBs than conventional Li metal anodes.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据