Key Laboratory of Fuel Cell Technology of Guangdong Province;
School of Chemistry and Chemical Engineering;
South China University of Technology;
Guangzhou 510640;
China;
State Key Laboratory of Pulp and Paper Engineering;
School of Chemistry and Chemical Engineering;
South China University of Technology;
Guangzhou 510640;
China;
multi-shelled hollow arrays; metal-organic frameworks; multilayer ZIF-L arrays; Co/CoP heterostructures; hydrogen evolution reaction;