In situ generated 3D hierarchical Co3O4@MnO2 core-shell hybrid materials: self-assembled fabrication, morphological control and energy applications

doi:10.1039/c8ta11487k

	In situ generated 3D hierarchical Co3O4@MnO2 core-shell hybrid materials: self-assembled fabrication, morphological control and energy applications
	Miao, Qingqing 1; Du, Yanyan 1,2; Wang, Gongtang 2; Sun, Zhicheng 3; Zhao, Yuehan 3; Zhang, Suojiang 1
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2019-03-21
卷号	7 期号:11 页码:5967-5980
ISSN号	2050-7488
DOI	10.1039/c8ta11487k
英文摘要	A simple in situ self-assembly strategy for a novel series of highly ordered 3D hierarchical Co3O4@MnO2 core-shell hybrid materials with peculiar morphologies, uniform size and high quality has been successfully developed. The mechanisms of the morphology control, reaction process, product generation, calcining process, as well as the morphology evolution of Co3O4, the intermediates of Co3O4@C and Co3O4@MnO2 hybrid materials, have been investigated and clarified in detail. The core-shell Co3O4@MnO2 hybrid architectures have the advantages of morphological features, synergistic effects between core and shell, alternative products of Co3O4@C@MnO2 or Co3O4@MnO2, and facilitate electrolyte reactions. The 3D hierarchical Co3O4@MnO2 core-shell hybrid materials are used, for the first time, for two typical Co-based energy applications in photoelectric conversion devices of dye-sensitized solar cells (DSSCs) and the decomposition of an important solid rocket propellant, ammonium perchlorate (AP). With the 3D hierarchical Co3O4 core and ultrathin MnO2 shell, the developed hybrid materials exhibit superior performances and remarkable catalytic properties. As the alternative counter electrode of DSSCs, the developed Co3O4@MnO2 core-shell hybrid system exhibited an impressive performance with the conversion efficiency of 7.08%, which was improved by 26.4% and 13.3% as compared with the Co3O4 and Co3O4@C counterparts, respectively. As the catalyzer of AP decomposition, the Co3O4 material obviously decreased the decomposition temperatures by about 118-143 degrees C and increased the exothermic heat to 933-1228 J g(-1). For the Co3O4@C counterpart, the decomposition temperatures were decreased by 120-131 degrees C with the increased exothermic heat of 1254-1306 J g(-1). The addition of Co3O4@MnO2 core-shell hybrid materials decreased the decomposition temperatures by about 107-112 degrees C and remarkably increased the exothermic heat to 1311-1452 J g(-1). To the best of our knowledge, this is the first 3D hierarchical Co3O4@MnO2 core-shell hybrid material series developed in situ and used for the energy applications of DSSCs and AP decomposition. These results provide a simple and effective strategy for designing new types of 3D hierarchical hybrid materials towards high catalytic activity in energy applications.
资助项目	National Natural Science Foundation of China[21878309] ; National Natural Science Foundation of China[51502049] ; National Natural Science Foundation of China[51203161] ; National Natural Science Foundation of China[21776021] ; Youth Innovation Promotion Association CAS ; State Key Program of National Natural Science Foundation of China[21436010] ; Key Research Program of Frontier Sciences, CAS[QYZDY-SSW-JSC011] ; CAS Key Laboratory of Green Process and Engineering ; Institute of Process Engineering, Chinese Academy of Sciences ; Cross training plan for high level talents in Beijing
WOS关键词	COUNTER-ELECTRODE ; HIGH-EFFICIENCY ; MNO2 NANOSHEETS ; NANOWIRE ARRAYS ; CO3O4 NANOTUBES ; NANOROD ARRAYS ; HOLLOW SPHERES ; SOLAR-CELL ; LOW-COST ; PERFORMANCE
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000463970400072
资助机构	National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; State Key Program of National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; CAS Key Laboratory of Green Process and Engineering ; Institute of Process Engineering, Chinese Academy of Sciences ; Cross training plan for high level talents in Beijing
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/28277]
专题	中国科学院过程工程研究所
通讯作者	Zhang, Suojiang
作者单位	1.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, State Key Lab Multiphase Complex Syst, CAS Key Lab Green Proc & Engn,Inst Proc Engn, 1 Zhongguancun North Second St, Beijing 100190, Peoples R China 2.Shandong Normal Univ, Sch Phys & Elect, Jinan 250358, Shandong, Peoples R China 3.Beijing Inst Graph Commun, Beijing Engn Res Ctr Printed Elect, Beijing 102600, Peoples R China
推荐引用方式 GB/T 7714	Miao, Qingqing,Du, Yanyan,Wang, Gongtang,et al. In situ generated 3D hierarchical Co3O4@MnO2 core-shell hybrid materials: self-assembled fabrication, morphological control and energy applications[J]. JOURNAL OF MATERIALS CHEMISTRY A,2019,7(11):5967-5980.
APA	Miao, Qingqing,Du, Yanyan,Wang, Gongtang,Sun, Zhicheng,Zhao, Yuehan,&Zhang, Suojiang.(2019).In situ generated 3D hierarchical Co3O4@MnO2 core-shell hybrid materials: self-assembled fabrication, morphological control and energy applications.JOURNAL OF MATERIALS CHEMISTRY A,7(11),5967-5980.
MLA	Miao, Qingqing,et al."In situ generated 3D hierarchical Co3O4@MnO2 core-shell hybrid materials: self-assembled fabrication, morphological control and energy applications".JOURNAL OF MATERIALS CHEMISTRY A 7.11(2019):5967-5980.