State Key Laboratory of Automotive Simulation and Control of Materials Science&Engineering Laboratory of Automobile Materials MOE Microscopy Center International Center of Future Science University University 130012;
Division of Scientific Instrumentation&Management Basic Science Institute 34133 of Korea;
Institute of High Energy Physics Academy of Sciences 100049;
State Key Laboratory of Luminescence and Applications Institute of Optics Mechanics and Physics Academy of Sciences 130033;
Chainmail catalyst; Graphitic layers; Co nanoparticles; Oxygen reduction reaction;