锂(药物)
导电体
金属锂
材料科学
金属
氢
化学工程
纳米技术
锂离子电池的纳米结构
化学
复合材料
电化学
电极
阳极
有机化学
冶金
物理化学
医学
工程类
内分泌学
作者
Xin Gao,Xueli Zheng,Yusheng Ye,Hiang Kwee Lee,Pu Zhang,Andy Cui,Xin Xiao,Yufei Yang,Yi Cui
出处
期刊:Nano Letters
[American Chemical Society]
日期:2024-03-04
标识
DOI:10.1021/acs.nanolett.3c04370
摘要
Lithium (Li) metal stands as a promising anode in advancing high-energy-density batteries. However, intrinsic issues associated with metallic Li, especially the dendritic growth, have hindered its practical application. Herein, we focus on molecular combined structural design to develop dendrite-free anodes. Specifically, using hydrogen-substituted graphdiyne (HGDY) aerogel hosts, we successfully fabricated a promising Li composite anode (Li@HGDY). The HGDY aerogel’s lithiophilic nature and hierarchical pores drive molten Li infusion and reduce local current density within the three-dimensional HGDY host. The unique molecular structure of HGDY provides favorable bulk pathways for lithium-ion transport. By simultaneous regulation of electron and ion transport within the HGDY host, uniform lithium stripping/platting is fulfilled. Li@HGDY symmetric cells exhibit a low overpotential and stable cycling. The Li@HGDY||lithium iron phosphate full cell retained 98.1% capacity after 170 cycles at 0.4 C. This study sheds new light on designing high-capacity and long-lasting lithium metal anodes.
科研通智能强力驱动
Strongly Powered by AbleSci AI