Journal
SMALL
Volume 12, Issue 19, Pages 2559-2566Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201600101
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Funding
- National Natural Science Foundation of China [21373195, 51522212, 51421002]
- Recruitment Program of Global Experts
- program for New Century Excellent Talents in University [NCET-12-0515]
- Fundamental Research Funds for the Central Universities [WK3430000004]
- Collaborative Innovation Center of Suzhou Nano Science and Technology
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Carbonaceous materials have attracted immense interest as anode materials for Na-ion batteries (NIBs) because of their good chemical, thermal stabilities, as well as high Na-storage capacity. However, the carbonaceous materials as anodes for NIBs still suffer from the lower rate capability and poor cycle life. An N, O-dual doped carbon (denoted as NOC) network is designed and synthesized, which is greatly favorable for sodium storage. It exhibits high specific capacity and ultralong cycling stability, delivering a capacity of 545 mAh g(-1) at 100 mA g(-1) after 100 cycles and retaining a capacity of 240 mAh g(-1) at 2 A g(-1) after 2000 cycles. The NOC composite with 3D well-defined porosity and N, O-dual doped induces active sites, contributing to the enhanced sodium storage. In addition, the NOC is synthesized through a facile solution process, which can be easily extended to the preparation of many other N, O-dual doped carbonaceous materials for wide applications in catalysis, energy storage, and solar cells.
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