School of Physics and Electronics;
Hunan University;
Changsha;
410082;
China;
School of Chemistry and Materials Science;
Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials;
Jiangsu Normal University;
Xuzhou;
221116;
China;
Institute for Advanced Study;
Chengdu University;
Chengdu;
610106;
China;
Faculty of Technology;
University of Oulu;
Oulu;
90014;
Finland;
Yiyang Wanjingyuan Electronics Co.;
Ltd.;
Yiyang;
413000;
China;
Key Laboratory of Materials Processing and Mold(Zhengzhou University);
Ministry of Education;
Zhengzhou University;
Zhengzhou;
450002;
China;
Supercapacitors; Nickel sulfides; Hybrid structures; Energy storage materials; Pseudocapacitance;