Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 8, Pages 5366-5375Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b12370
Keywords
2D COF; polyporphyrin; high conductive; lithium storage; high capacity
Funding
- National Basic Research 973 Program of China [2012CB932901]
- National Nature Science Foundation of China [51573191, 21373235, 21290190]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB12010100]
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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.
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