期刊
ELECTROCHIMICA ACTA
卷 95, 期 -, 页码 38-42出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2013.02.002
关键词
Nonwoven carbon nanofibers; Lithium cobalt phosphate; Composite; Cathode material; Lithium ion battery
资金
- Deutsche Forschungsgemeinschaft (DFG)
- Excellency Cluster Center of Smart Interfaces (CSI)
- DFG
- National Science Foundation [CBET-0966764]
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1312609] Funding Source: National Science Foundation
Electrospun and carbonized 3D nanofiber mats coated with olivine structured lithium cobalt phosphate (LiCoPO4) were formed by a Pechini-assisted sol-gel process as cathode material for lithium ion batteries. 3D nonwoven nanofibers were soaked in aqueous solution containing lithium, cobalt salts and phosphates at 80 degrees C for 2 h. Then, the composites were dried and annealed at 730 degrees C for 2 to 12 h in nitrogen atmosphere. Crystalline deposits were uniformly distributed on the carbon nanofiber surface. The loading of the cathode material on the 3D carbon nanofiber composites reached 300 wt%. The electrochemical measurements revealed the discharge specific capacity (measured at a discharge rate of 0.1 C and room temperature) reaching a maximum value of 46 mAh g(-1) after annealing time t = 5 h. (c) 2013 Elsevier Ltd. All rights reserved.
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