High Conductive Two-Dimensional Covalent Organic Framework for Lithium Storage with Large Capacity

详细信息    查看全文

• 作者：Hui Yang ; Shengliang Zhang ; Liheng Han ; Zhou Zhang ; Zheng Xue ; Juan Gao ; Yongjun Li ; Changshui Huang ; Yuanping Yi ; Huibiao Liu ; Yuliang Li
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：March 2, 2016
• 年：2016
• 卷：8
• 期：8
• 页码：5366-5375
• 全文大小：712K
• ISSN：1944-8252

文摘

A high conductive 2D COF polyporphyrin (TThPP) linked by 4-thiophenephenyl groups was synthesized through an in situ chemical oxidative polymerization on the surface of copper foil. The TThPP films were used as the anode of lithium-ion battery, which exhibited high specific capacities, excellent rate performances, and long cycle lives due to the alignment of 2D polyporphyrin nanosheets, and they (i) can highly efficiently adsorb Li atoms, (ii) have short-ended paths for the fast lithium ion diffusion, and (iii) open nanopores holding electrolyte. The reversible capacity is up to 666 mAh/g. This is the first example of an organic 2D COF for an anode of lithium-ion battery and represents an important step toward the use of COFs in the next-generation high-performance lithium-ion battery.