Hitachi, Ltd.

Masanari Oda

Mitsuru Kobayashi

Toyotaka Yuasa

Sai Ogawa

Kan Kitagawa

A positive electrode for a rechargeable lithium ion battery includes a mixture layer including a positive-electrode active material, a conducting agent, and a binder and a collector having the mixture layer formed on the surface thereof. The positive-electrode active material is a composite oxide having an olivine structure expressed by a formula LiMPO(where M represents a transition metal including at least one of Fe and Mn and a and x satisfy 0&#x3c;a&#x2266;1.1 and 0.9&#x2266;x&#x2266;1.1). The conducting agent includes fibrous carbon. A carbon coating layer is formed on the surface of the collector. A part of the positive-electrode active material and a part of the fibrous carbon enter pits formed in the carbon coating layer.

Growing community of inventors

Hitachi, Japan

Masanari Oda