| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power storage device which allows further increase in the energy efficiency while the reduction in capacity is held down, and a method of manufacturing an electrode active material. <P>SOLUTION: The power storage device of the invention comprises: a positive electrode having a positive electrode active material; a negative electrode having a negative electrode active material; and ion conduction medium capable of transmitting ions and interposed between the positive and negative electrodes. The power storage device has, as the positive or negative electrode active material, a combination of a carbon skeleton and chalcogen containing at least selenium, which includes a chalcogen compound such that the weight percentage of selenium to a total amount of carbon, hydrogen, nitrogen, and chalcogen is 15% or larger. Preferably, the chalcogen compound further contains sulfur as chalcogen. <P>COPYRIGHT: (C)2012,JPO&INPIT |
