文献类型：期刊文献

英文题名：Superior electronic/ionic transport dynamics of Zn-Co-OH/MnO2 heterointerface containing oxygen vacancies for pseudocapacitive storage

作者：Xu, Le[1,2];Xi, Yukun[3,4];Huang, Chen;Zhang, Junye[1];Hua, Zile;Zhou, Jiao-Jiao[1,2];Yin, Jingzhou[5];Zhang, Lili[5];Li, Wenbin[3,4];Wang, Jingjing[3,4];Chen, Luyang[1];Li, Xifei[3,4]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine M, Shanghai 200050, Peoples R China;[3]Xian Univ Technol, Inst Adv Electrochem Energy, Xian Key Lab New Energy Mat & Devices, Xian 710048, Shanxi, Peoples R China;[4]Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Shanxi, Peoples R China;[5]Huaiyin Normal Univ, Sch Chem & Chem Engn, Jiangsu Key Lab Chem Low Dimens Mat, Huaian 223300, Peoples R China

年份：2023

卷号：468

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20230085055);WOS:【SCI-EXPANDED(收录号:WOS:001010389100001)】；

基金：This work was supported by the National Natural Science Foundation of China (52272296, 51502092) , the Fundamental Research Funds for the Central Universities (JKD01211601, 222201718002) , the Thousand Talents Program Young Project in China, the Program for Eastern Scholar at Shanghai Institutions of Higher Learning (TP2015028) , and Natural Science Foundation of Shaanxi (2020JC-41, 2021TD-15) .

语种：英文

外文关键词：Heterointerface; Built-in electric field; Oxygen vacancies; Electron; ion transfer; M-ZCOH; NPG; NF; Supercapacitors

摘要：The superior electronic/ionic transport dynamics of electrode materials have been crucial to achieve appealing high performance for supercapacitors. Herein, a fascinating one-dimensional (1D) zinc cobalt hydroxide nano-belts/0D irregular manganese dioxide nanoparticles (M-ZCOH) have been vertically loaded into the 3D Ni foam (NF) substrate wrapped by nitrogen-doped graphene (NPG) (M-ZCOH/NPG/NF) for supercapacitors. The inge-niously designed M-ZCOH/NPG/NF composites feature powerful built-in electric field (BIEF) introduced by well-defined heterointerface with abundant oxygen vacancies defects. The formed electron accumulation triggering strong interfacial interaction verified by the differential charge density analysis may endow M-ZCOH/NPG/NF with the extra driving force to increase the diffusion/adsorption of electrolyte ions, thereby facilitating electron/ ion transfer kinetics. Also, the qualitative negative shift of the d band center for M-ZCOH composites further evidences a lower electron/ion transfer barrier compared with the monomers. Obviously, the penetrating un-derstanding of heterointerface on the improved properties is manifestly interpreted by combining theoretical and experimental analysis. Moreover, the ingenious strategy of engineering the heterointerfaces in unique hetero-structure with rich defects may provide a new prospect for optimizing other advanced materials in sustainable energy storage systems.