Functional integration and self-template synthesis of hollow core-shell carbon mesoporous spheres/Fe3O4/nitrogen-doped graphene to enhance catalytic activity in DSSCs
Excellent corrosion resistance is a crucial point for photovoltaic devices to acquire high and stable performance under high corrosion complicated environments. A creative inspiration comes from sandwich construction that Fe3O4 nanoparticles were anchored on hollow core-shell carbon mesoporous microspheres and wrapped by N-graphene nanosheets (HCCMS/Fe3O4@N-RGO) to get integrated high corrosive resistance and stability. The as-prepared multiple composite material possesses outstanding performance from structure optimization, performance improvement, and interface synergy. Thereby, it can effectively suppress the corrosion from electrolyte in recycled tests for many times, indicating ultrahigh corrosion resistance life of this double carbon-based nanocomposite. Furthermore, the electrical conductivity and conversion efficiency of the composite are well remained due to the triple synergistic interactions, which could serve as a guideline in establishing high-performance multifunctional HCCMS/Fe3O4@N-RGO with bright prospects in energy devices, such as lithium batteries, supercapacitors and electrode materials, etc.