Fe₃O₄ hard templating to assemble highly wrinkled graphene sheets into hierarchical porous film for compact capacitive energy storage.

ABSTRACT: Highly wrinkled graphene film (HWGF) with high packing density was synthesized by combining an electrostatically self-assembling process, a vacuum filtration-induced film assembling process and capillary compression. Fe₃O₄ nanoparticles were used as a low-cost and environment-friendly hard template. Hierarchical porosity and high packing density were achieved with the aid of capillary compression in the presence of Fe₃O₄ nanoparticles. This strategy enables integration of highly wrinkled graphene sheets to form highly compact carbon electrodes with a continuous ion transport network. The generated HWGF exhibited a high packing density of 1.53 g cm^-3, a high specific surface area of 383 m² g^-1 and a hierarchically

SUBMITTER: Fang H 

PROVIDER: S-EPMC9065504 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature