Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7725279 | Journal of Power Sources | 2018 | 8 Pages |
Abstract
Lithium metal is considered as the ultimate anode material for high-energy Li battery systems. However, the commercial application of lithium anode is impeded by issues with safety and low coulombic efficiency induced by Li dendrite growth. Herein, a free-standing three-dimensional nitrogen-enriched graphitic carbon sponge with a high nitrogen content is proposed as a multifunctional current collect for Lithium accommodation. The abundant lithiophilic N-containing functional groups are served as preferred nucleation sites to guide a uniform Li deposition. In addition, the nitrogen-enriched graphitic carbon sponge with a high specific surface area can effectively reduce the local current density. As a result of the synergistic effect, the nitrogen-enriched graphitic carbon sponge electrode realizes a long-term stable cycling without dendrites formation. Notably, the as-obtained composite electrode can deliver an ultra-high specific capacity of â¼3175â¯mAâ¯hâ¯gâ1. The nitrogen-enriched graphitic carbon sponge might provide innovative insights to design a superior matrix for dendrite-free Li anode.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Guangmei Hou, Xiaohua Ren, Xiaoxin Ma, Le Zhang, Wei Zhai, Qing Ai, Xiaoyan Xu, Lin Zhang, Pengchao Si, Jinkui Feng, Fei Ding, Lijie Ci,