Single Fe atoms anchored by short-range ordered nanographene boost oxygen reduction reaction in acidic media

Chen，Shaoqing1,5; Zhang，Nianji1; Narváez Villarrubia，Claudia W.2; Huang，Xiang3; Xie，Lin3; Wang，Xiyang4; Kong，Xiangdong5; Xu，Hu3; Wu，Gang6; Zeng，Jie5; Wang，Hsing Lin1,2

2019

10.1016/j.nanoen.2019.104164

Nano Energy   影响因子和分区

2211-2855

2211-3282

The development of efficient and stable single-atom electrocatalysts with earth-abundant metals have emerged as a promising alternative to the costly Pt-based nanomaterials for oxygen reduction reaction (ORR). Herein, we synthesize a highly efficient electrocatalyst with single Fe atoms anchored by N-doped short-range ordered carbon loading on 2 D reduced graphene oxide (RGO). Unlike the highly graphitized carbon materials in previous ORR catalysts, in which the diffusion of oxygen molecules (∼3.46 Å) are blocked by long carbon chains and small interlayer spacing (∼3.4 Å), it is found that the Fe/N-doped nanographene possesses large interlayer spacing (>4 Å) and short carbon fragments in one layer. The unique nanographene structure in nanoscale can facilitate the transport of oxygen molecules to the active sites of atomically dispersed FeN and FeN. In acidic media for ORR, as-prepared Fe-N-NG/RGO catalyst exhibited half-wave potential (E) of 0.84 V versus the reversible hydrogen electrode, and the loss of E is less than 5 mV during 15,000 potential cycles.

Energy conversion Fuel cells Nanographene Oxygen reduction reaction Single atom catalyst

EI ; SCI

英语

第一

[CYJ20170817110652558] ; National Key Research and Development Program of China Stem Cell and Translational Research[2018YFB0704100] ; Department of Agriculture of Guangdong Province[2016LJ06N507] ; Southern University of Science and Technology[]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000503062400074

Elsevier Ltd

20194507631344

Atoms ; Doping (additives) ; Electrocatalysts ; Electrolytic reduction ; Energy conversion ; Fuel cells ; Graphene ; Iron ; Molecules ; Oxygen

Energy Conversion Issues:525.5 ; Ore Treatment:533.1 ; Iron:545.1 ; Fuel Cells:702.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Atomic and Molecular Physics:931.3

2-s2.0-85074413218

Scopus

1.Department of Materials Science and EngineeringSouthern University of Science and Technology,Shenzhen,518055,China
2.Physical Chemistry and Applied SpectroscopyChemistry DivisionLos Alamos National Laboratory,Los Alamos,87545,United States
3.Department of PhysicsSouthern University of Science and Technology,Shenzhen,518055,China
4.State Key Lab of Inorganic Synthesis and Preparative ChemistryJilin University,Changchun,130012,China
5.Hefei National Laboratory for Physical Sciences at the MicroscaleKey Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of SciencesDepartment of Chemical PhysicsUniversity of Science and Technology of China,Hefei,230026,China
6.Department of Chemical and Biological EngineeringUniversity at BuffaloThe State University of New York,Buffalo,14260,United States

Chen，Shaoqing,Zhang，Nianji,Narváez Villarrubia，Claudia W.,et al. Single Fe atoms anchored by short-range ordered nanographene boost oxygen reduction reaction in acidic media[J]. Nano Energy,2019,66.

Chen，Shaoqing.,Zhang，Nianji.,Narváez Villarrubia，Claudia W..,Huang，Xiang.,Xie，Lin.,...&Wang，Hsing Lin.(2019).Single Fe atoms anchored by short-range ordered nanographene boost oxygen reduction reaction in acidic media.Nano Energy,66.

Chen，Shaoqing,et al."Single Fe atoms anchored by short-range ordered nanographene boost oxygen reduction reaction in acidic media".Nano Energy 66(2019).