Sulfur-Doped Graphdiyne as a High-Capacity Anode Material for Lithium-Ion Batteries

Nanomaterials

Fanan Kong¹  Shijie Ren¹  Qingyin Li¹  Yong Yue¹ 

[1] State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China;

关键词: sulfur-doped graphdiyne;    bottom-up synthesis;    anode material;    lithium-ion batteries;   

DOI  :  10.3390/nano11051161

来源: DOAJ

【 摘 要 】

Heteroatom doping is regarded as a promising approach to enhance the electrochemical performance of carbon materials, while the poor controllability of heteroatoms remains the main challenge. In this context, sulfur-doped graphdiyne (S-GDY) was successfully synthesized on the surface of copper foil using a sulfur-containing multi-acetylene monomer to form a uniform film. The S-GDY film possesses a porous structure and abundant sulfur atoms decorated homogeneously in the carbon skeleton, which facilitate the fast diffusion and storage of lithium ions. The lithium-ion batteries (LIBs) fabricated with S-GDY as anode exhibit excellent performance, including the high specific capacity of 920 mA h g⁻¹ and superior rate performances. The LIBs also show long-term cycling stability under the high current density. This result could potentially provide a modular design principle for the construction of high-performance anode materials for lithium-ion batteries.

【 授权许可】

Unknown