title: Hollow mesoporous carbon cubes with high activity towards the electrocatalytic reduction of oxygen.
abstract: Hollow-structured mesoporous carbon cubes (HMCCs) have been successfully synthesized from carbon dioxide by a facile approach based on thermal reduction of magnesium. The approach is economical and applicable to large-scale synthesis. Notably, pyrrole-type nitrogen species are doped into the HMCCs during the synthesis in situ, that is, without introducing a nitrogen-containing precursor. A formation mechanism of the HMCCs is proposed, and formation of the structure is attributed to MgO templates generated in situ. Furthermore, the HMCCs are demonstrated to be a promising alternative to commercial Pt/C fuel-cell catalysts for the electrochemical oxygen reduction reaction.
authors.affiliation: State Key Lab of High Performance Ceramics and Superfine Microstructure, Institution Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050 (PR China).
authors.forename: Lisong
authors.initials: L
authors.lastname: Chen
authors.forename: Xiangzhi
authors.initials: X
authors.lastname: Cui
authors.forename: Lingxia
authors.initials: L
authors.lastname: Zhang
authors.forename: Yongxia
authors.initials: Y
authors.lastname: Wang
authors.forename: Min
authors.initials: M
authors.lastname: Wang
authors.forename: Fangming
authors.initials: F
authors.lastname: Cui
authors.forename: Chenyang
authors.initials: C
authors.lastname: Wei
authors.forename: Jingwei
authors.initials: J
authors.lastname: Feng
authors.forename: Tongguang
authors.initials: T
authors.lastname: Ge
authors.forename: Wenchao
authors.initials: W
authors.lastname: Ren
authors.forename: Jianlin
authors.initials: J
authors.lastname: Shi
mesh_terms: D002244:Carbon / Q000737:chemistry*; D002245:Carbon Dioxide / Q000737:chemistry*; D002384:Catalysis; D004563:Electrochemistry; D008274:Magnesium / Q000737:chemistry; D049329:Nanostructures / Q000737:chemistry*; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry*; D016062:Porosity
chemical_list: D002245:Carbon Dioxide; D002244:Carbon; D008274:Magnesium; D010100:Oxygen
keywords: carbon; doping; electrochemistry; fuel cells; reduction