Pyrolitic carbon from biomass precursors as anode materials for lithium batteries

• Published in: Materials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 430; no. 1; pp. 132 - 137
• Main Authors: Stephan, A. Manuel, Kumar, T. Prem, Ramesh, R., Thomas, Sabu, Jeong, Soo Kyung, Nahm, Kee Suk
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 25.08.2006; Elsevier
• Subjects: Applied sciences; Banana fiber; Carbon anode; Energy; Energy. Thermal use of fuels; Exact sciences and technology; Lithium-ion battery; Porogen; Pyrolytic carbon; Transport and storage of energy; Lithium-ion battery; Banana fiber; Carbon anode; Porogen; Pyrolytic carbon; Lithium battery; Electrochemical properties; Electrode material; Microstructure; Chemical synthesis; Carbon; X ray diffraction
• ISSN: 0921-5093; 1873-4936
• DOI: 10.1016/j.msea.2006.05.131

Disordered carbonaceous materials were synthesized by the pyrolysis of banana fibers treated with pore-forming substances such as ZnCl 2 and KOH. X-ray diffraction studies indicated a carbon structure with a large number of disorganized single layer carbon sheets. Addition of porogenic agent led to remarkable changes in the structure and morphology of the carbonaceous products. The product obtained with ZnCl 2 treatment gave first-cycle lithium insertion and de-insertion capacities of 3325 and 400 mAh g −1, respectively. Lower capacities only could be realized in the subsequent cycles, although the coulombic efficiency increased upon cycling, which in the 10th cycle was 95%.