Provided is a system and method for spontaneous waste heat recovery from a hydrogen fuel cell in polar environments. The system for spontaneous waste heat recovery includes a cabin, and a filtering device, an emergency lighting device, an energy storage ba...

A pitch-based graphite composite material, a preparation method therefor and an application thereof are provided. The graphite is coated with pitch gel spheres, and a core-shell composite structure of pitch carbon microsphere coated graphite is obtained th...