Laser-sculptured ultrathin transition metal carbide layers for energy storage and energy harvesting applications.

ABSTRACT: Ultrathin transition metal carbides with high capacity, high surface area, and high conductivity are a promising family of materials for applications from energy storage to catalysis. However, large-scale, cost-effective, and precursor-free methods to prepare ultrathin carbides are lacking. Here, we demonstrate a direct pattern method to manufacture ultrathin carbides (MoC_x, WC_x, and CoC_x) on versatile substrates using a CO₂ laser. The laser-sculptured polycrystalline carbides (macroporous, ~10-20 nm wall thickness, ~10 nm crystallinity) show high energy storage capability, hierarchical porous structure, and higher thermal resilience than MXenes and other laser-ablated carbon materials. A flexible supercapacitor made of MoC_x demonstrat

SUBMITTER: Zang X 

PROVIDER: S-EPMC6629648 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature