Rechargeable lithium battery based on pyrolytic carbon as a negative electrode

✍ Scribed by M. Mohri; N. Yanagisawa; Y. Tajima; H. Tanaka; T. Mitate; S. Nakajima; M. Yoshida; Y. Yoshimoto; T. Suzuki; H. Wada

• Book ID: 103898481
• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 378 KB
• Volume: 26
• Category: Article
• ISSN: 0378-7753
• DOI: 10.1016/0378-7753(89)80176-4

✦ Synopsis

We have developed a new type of rechargeable lithium battery composed of a pyrolytic carbon as negative electrode, a metal oxide as positive electrode, and a nonaqueous electrolytic solution. The main feature of this battery is the use of a new pyrolytic carbon, obtained by chemical vapor deposition of hydrocarbon, as a lithium intercalation electrode. The pyrolytic carbon has a layered structure whose interplanar spacing is larger than that of graphite. The size of the crystallites is extremely small. Lithium can be electrochemically intercalated into this carbon electrode in a nonaqueous electrolytic solution such as LiC104 in propylene carbonate at room temperature. The electrode shows good reversibility and its coulombic efficiency is greater than 99%. The battery has a long cycle life and endures deep discharge.