Amorphous red phosphorus incorporated with pyrolyzed bacterial cellulose as a free-standing anode for high-performance lithium ion batteries |
| |
| Authors: | Hongyu Yang Yu Li Peng Long Junkai Han Chen Cao Fengnan Yao Wei Feng |
| |
| Affiliation: | School of Materials Science and Engineering, Tianjin University, Tianjin 300072 P. R. China, Fax: +86-22-27404724, +86-22-87402059 ; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072 P. R. China ; Key Laboratory of Advanced Ceramics and Machining Technology, Ministry of Education, Tianjin 300072 P. R. China ; Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300072 P. R. China |
| |
| Abstract: | Amorphous red phosphorus/pyrolyzed bacterial cellulose (P-PBC) free-standing films are prepared by thermal carbonization and a subsequent vaporization-condensation process. The distinctive bundle-like structure of the flexible pyrolyzed bacterial cellulose (PBC) matrix not only provides sufficient volume to accommodate amorphous red-phosphorus (P) but also restricts the pulverization of red-P during the alternate lithiation/delithiation process. When the mass ratio of raw materials, red-P to PBC, is 70 : 1, the free-standing P-PBC film anode exhibits high reversible capacity based on the mass of the P-PBC film (1039.7 mA h g−1 after 100 cycle at 0.1C, 1C = 2600 mA g−1) and good cycling stability at high current density (capacity retention of 82.84% after 1000 cycles at 2C), indicating its superior electrochemical performances.A novel freestanding anode was prepared by combining amorphous red-P with a pyrolyzed bacterial cellulose (PBC) matrix for the first time. |
| |
| Keywords: | |
|
|
