Mesoporous CuCo2O4 nanoparticles as an efficient cathode catalyst for Li-O2 batteries
Mermaid bionic gill type underwater breathing apparatus
Automatic compression aerated and charged hybrid air energy vehicle
Mesoporous nitrogen-doped carbon hollow spheres as high-performance anodes for lithium-ion batteries
Flexible Nb2O5 nanowires/graphene film electrode for high-performance hybrid Li-ion supercapacitors