|
1
|
Savić M, Janošević Ležaić A, Gavrilov N, Pašti I, Nedić Vasiljević B, Krstić J, Ćirić-Marjanović G. Carbonization of MOF-5/Polyaniline Composites to N,O-Doped Carbon/ZnO/ZnS and N,O-Doped Carbon/ZnO Composites with High Specific Capacitance, Specific Surface Area and Electrical Conductivity. MATERIALS (BASEL, SWITZERLAND) 2023; 16:1018. [PMID: 36770026 PMCID: PMC9919207 DOI: 10.3390/ma16031018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/12/2023] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
Composites of carbons with metal oxides and metal sulfides have attracted a lot of interest as materials for energy conversion and storage applications. Herein, we report on novel N,O-doped carbon/ZnO/ZnS and N,O-doped carbon/ZnO composites (generally named C-(MOF-5/PANI)), synthesized by the carbonization of metal-organic framework MOF-5/polyaniline (PANI) composites. The produced C-(MOF-5/PANI)s are comprehensively characterized in terms of composition, molecular and crystalline structure, morphology, electrical conductivity, surface area, and electrochemical behavior. The composition and properties of C-(MOF-5/PANI) composites are dictated by the composition of MOF-5/PANI precursors and the form of PANI (conducting emeraldine salt (ES) or nonconducting emeraldine base). The ZnS phase is formed only with the PANI-ES form due to S-containing counter-ions. XRPD revealed that ZnO and ZnS existed as pure wurtzite crystalline phases. PANI and MOF-5 acted synergistically to produce C-(MOF-5/PANI)s with high SBET (up to 609 m2 g-1), electrical conductivity (up to 0.24 S cm-1), and specific capacitance, Cspec, (up to 238.2 F g-1 at 10 mV s-1). Values of Cspec commensurated with N content in C-(MOF-5/PANI) composites (1-10 wt.%) and overcame Cspec of carbonized individual components PANI and MOF-5. By acid etching treatment of C-(MOF-5/PANI), SBET and Cspec increased to 1148 m2 g-1 and 341 F g-1, respectively. The developed composites represent promising electrode materials for supercapacitors.
Collapse
Affiliation(s)
- Marjetka Savić
- Vinča Institute of Nuclear Science, University of Belgrade, National Institute of the Republic of Serbia, P.O. Box 522, 11001 Belgrade, Serbia
| | | | - Nemanja Gavrilov
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia
| | - Igor Pašti
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia
| | - Bojana Nedić Vasiljević
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia
| | - Jugoslav Krstić
- Department of Catalysis and Chemical Engineering, Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia
| | - Gordana Ćirić-Marjanović
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia
| |
Collapse
|
|
2
|
Wang M, Ma Z, Zhang W, Yuan H, Kundu M, Zhang Z, Li J, Wang X. Bimetallic persulfide nanoflakes assembled by dealloying and sulfurization: a versatile electro-catalyst for overall water splitting and Zn–air batteries. Catal Sci Technol 2022. [DOI: 10.1039/d1cy01414e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
(CoFe)(S2)2 nanoflakes with graphene-like edges have been synthesized through dealloying and sulfurization, and exhibit multi-functional electro-catalytic performance toward the ORR, OER, HER.
Collapse
Affiliation(s)
- Mei Wang
- Laboratory of Advanced Materials and Energy Electrochemistry, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
- School of Materials Science and Engineering, North University of China, Xueyuan Road 3, Taiyuan 030051, China
| | - Zizai Ma
- Laboratory of Advanced Materials and Energy Electrochemistry, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
| | - Wenjuan Zhang
- Department de Química, Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra (Cerdanyola del Vallès), Spain
| | - Hefeng Yuan
- Laboratory of Advanced Materials and Energy Electrochemistry, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
| | - Manab Kundu
- Electrochemical Energy Storage Laboratory, Department of Chemistry, SRM University, Tamil Nadu 603203, India
| | - Zhonghua Zhang
- School of Materials Science and Engineering, Shandong University, Jingshi Road 17923, Jinan 250061, China
| | - Jinping Li
- Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Taiyuan, Shanxi, 030024, China
| | - Xiaoguang Wang
- Laboratory of Advanced Materials and Energy Electrochemistry, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
- Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Taiyuan, Shanxi, 030024, China
| |
Collapse
|