Fabrication and characterization of an LiMnO thin-film cathode for rechargeable lithium microbatteries

✍ Scribed by K.-H. Hwang; S.-H. Lee; S.-K. Joo

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 374 KB
• Volume: 54
• Category: Article
• ISSN: 0378-7753
• DOI: 10.1016/0378-7753(94)02072-b

✦ Synopsis

Thin films of LiMn204 spinel were fabricated by r.f. magnetron sputtering. The fresh films were amorphous but could be crystallized into a spinel structure by rapid thermal annealing in an oxygen ambient. The electrochemical performance of LiMn204 thin-film cathode was tested in LiMn204 thin-film (2000/~)/1 M LiCIO4 in propylene carbonate+dimethoxyethane/ Li metal arrangements. LiMn204 spinel films prepared at 750 *C had a favorable structure and grains for lithium-ion intercalation. Room temperature cycling of these films showed good intercalation kinetics and very promising cycling behavior.