According to the present invention, a nonaqueous electrolyte secondary battery prepared from a carbon material obtained from inexpensive petroleum heavy oil, having a high capacity, and excelling in high-temperature cyclability, the carbon material, and a ...

The fuel cell with a reformer according to the present invention comprises a solid electrolytic layer 56 of proton conductor or oxygen ion conductor disposed among a reforming layer 52 containing a catalyst 50 for reforming a hydrogen-content substance, a ...