期刊
CHEMICAL ENGINEERING JOURNAL
卷 287, 期 -, 页码 516-522出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2015.11.063
关键词
Polyimide; Sodium-ion battery; Anode; Electrochemical performance
资金
- National Natural Science Foundation of China [51303212, 51303202, 21572269, 21302224, 51372277]
- National Natural Science Foundation of Shandong Province [ZR2013BQ028, ZR2013EMQ013]
- Fundamental Research Fund for the Central Universities [14CX02196A, 15CX08005A, 15CX05010A]
- Beijing National Laboratory for Molecular Sciences [2013019]
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials [LK1516]
Two covalent polyimides with different conjugated subunits have been synthesized as sodium-ion batteries anode. The melamine and two commercially available dianhydrides have been adopted as building blocks to fabricate 3D extended covalent frameworks, which are consisted of electron withdrawing amide groups and triazine rings to coordination with Na ions. The results revealed that cross-linked polymer exhibits excellent durability and rate capacity (88.8 mAh g(-1) at a current density of 5.0 A g(-1) after 1000 cycles), which provides a promising candidate for high performance Na-ion battery anode. (C) 2015 Elsevier B.V. All rights reserved.
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