▎ 摘　　要

Three-dimensional hierarchical porous graphene materials with unique properties are of significant importance for the exploration of advanced electrocatalysts for both the oxygen reduction and evolution reactions (ORR/OER). Templated chemical vapor deposition is a favorable strategy to fabricate this kind of graphene, but the number of effective templates is limited. Here, silicoaluminophosphate (SAPO-34) zeolite crystals were used as the catalytic templates for the deposition of hierarchical porous graphene. The graphene obtained consisted of micron. size hollow cubes with mesoporous/nanoporous facets, and ultrathin walls, precisely replicating the structure of the cube-like SAPO-34 zeolite particles. A high doping level of nitrogen (6. 84 at%) was achieved by subsequent annealing at 700. under ammonia before template removal. Because of the unique porosity, abundant defects, and favorable N-doping, the N. doped graphene exhibited considerable reactivity for both ORR and OER.