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Agoro MA, Meyer EL, Olayiwola OI. Assemble of porous heterostructure thin film through CuS passivation for efficient electron transport in dye-sensitized solar cells. DISCOVER NANO 2024; 19:130. [PMID: 39158675 PMCID: PMC11333774 DOI: 10.1186/s11671-024-04082-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Accepted: 08/14/2024] [Indexed: 08/20/2024]
Abstract
Three different modified solar cells have been passivated with copper sulfide (CuS) on a TiO2 electrode and manganese sulfide (γ-MnS) hexagonal as photon absorbers. The MnS were prepared using (a-c) bis(N-Piperl-N-p-anisildithiocarbamato)Manganese(II) Complexes Mn[N-Piper-N-p-Anisdtc] as (MnS_1), N-p-anisidinyldithiocarbamato Mn[N-p-anisdtc] as (MnS_2) and N-piperidinyldithiocarbamato Mn[N-piperdtc] as (MnS_3). The corresponding passivated films were denoted as CM-1, CM-2, and CM-3. The influence of passivation on the structural, optical, morphological, and photochemical properties of the prepared devices has been investigated. Raman spectra show that the combination of this heterostructure is triggered by the variation in particle size and surface effect, thus resulting in good electronic conductivity. The narrow band gaps could be attributed to good interaction between the passivative materials on the TiO2 surface. CM-2 cells, stability studies show that the cell is polarized and current flows due to electron migration across the electrolyte and interfaces at this steady state. The cyclic voltammetry (CV) curve for the CM-3 with the highest current density promotes the electrocatalytic activity of the assembled solar cell. The catalytic reactions are further confirmed by the interfacial electron lifetimes in the Bode plots and the impedance spectra. The current-voltage (J-V) analysis suggests that the electrons in the conduction band of TiO2/CuS recombine with the semiconductor quantum dots (QDs) and the iodolyte HI-30 electrolyte, resulting in 5.20-6.85% photo-conversions.
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Affiliation(s)
- Mojeed A Agoro
- Fort Hare Institute of Technology, University of Fort Hare, Private Bag X1314, Alice, 5700, Eastern Cape, South Africa.
- Department of Chemistry, University of Fort Hare, Private Bag X1314, Alice, 5700, Eastern Cape, South Africa.
| | - Edson L Meyer
- Fort Hare Institute of Technology, University of Fort Hare, Private Bag X1314, Alice, 5700, Eastern Cape, South Africa
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Li G, Fan X, Deng D, Wu QH, Jia L. Surface charge induced self-assembled nest-like Ni 3S 2/PNG composites for high-performance supercapacitors. J Colloid Interface Sci 2023; 650:913-923. [PMID: 37453315 DOI: 10.1016/j.jcis.2023.06.072] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 06/06/2023] [Accepted: 06/11/2023] [Indexed: 07/18/2023]
Abstract
The paper presents a self-assembly approach to synthesize Ni3S2/N, P co-doped graphene (PNG) composite electrode materials for supercapacitors with high energy storage performance and structural stability. Innovatively, the self-assembly approach is induced via the surface charge effect utilizing a two-step hydrothermal method. The doping of nitrogen (N) and phosphorus (P) atoms regulates the surface charge distribution on graphene nanosheets. Therefore, in the synthesized Ni3S2/PNG heterostructures, Ni3S2 nanowires are interwoven into nests and uniformly attached to PNG. The design of the electrode materials with such a special structure not only supports each other to improve the stability of the materials but also facilitates the rapid diffusion of electrolyte ions. Based on the advantages of composition and structure, Ni3S2/PNG has a high specific capacitance of 1117C g-1 at a current density of 1 A/g and excellent rate performance. The asymmetric supercapacitors (ASC) assembled with Ni3S2/PNG and PNG as positive and negative materials respectively have a high energy density of 62 Wh kg-1 at a power density of 158 W kg-1.
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Affiliation(s)
- Guifang Li
- Key Laboratory of Energy Cleaning Utilization, Development, Cleaning Combustion and Energy Utilization Research Center of Fujian Province, Xiamen Key Laboratory of Marine Corrosion and Smart Protective Materials, College of Marine Equipment and Mechanical Engineering, Jimei University, Xiamen, Fujian 361021, China
| | - Xiaohong Fan
- Key Laboratory of Energy Cleaning Utilization, Development, Cleaning Combustion and Energy Utilization Research Center of Fujian Province, Xiamen Key Laboratory of Marine Corrosion and Smart Protective Materials, College of Marine Equipment and Mechanical Engineering, Jimei University, Xiamen, Fujian 361021, China
| | - Dingrong Deng
- Key Laboratory of Energy Cleaning Utilization, Development, Cleaning Combustion and Energy Utilization Research Center of Fujian Province, Xiamen Key Laboratory of Marine Corrosion and Smart Protective Materials, College of Marine Equipment and Mechanical Engineering, Jimei University, Xiamen, Fujian 361021, China
| | - Qi-Hui Wu
- Key Laboratory of Energy Cleaning Utilization, Development, Cleaning Combustion and Energy Utilization Research Center of Fujian Province, Xiamen Key Laboratory of Marine Corrosion and Smart Protective Materials, College of Marine Equipment and Mechanical Engineering, Jimei University, Xiamen, Fujian 361021, China
| | - Lishan Jia
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China.
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Ghosh K, Srivastava SK. Enhanced Supercapacitor Performance and Electromagnetic Interference Shielding Effectiveness of CuS Quantum Dots Grown on Reduced Graphene Oxide Sheets. ACS OMEGA 2021; 6:4582-4596. [PMID: 33644566 PMCID: PMC7905797 DOI: 10.1021/acsomega.0c05034] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 12/30/2020] [Indexed: 05/05/2023]
Abstract
This study is focused on the preparation of the CuS/RGO nanocomposite via the hydrothermal method using GO and Cu-DTO complex as precursors. X-ray diffraction, Fourier-transform infrared spectroscopy, and Raman and X-ray photoelectron spectroscopy study revealed the formation of the CuS/RGO nanocomposite with improved crystallinity, defective nanostructure, and the presence of the residual functional group in the RGO sheet. The morphological study displayed the transformation of CuS from nanowire to quantum dots with the incorporation of RGO. The galvanostatic charge/discharge curve showed that the CuS/RGO nanocomposite (12 wt % Cu-DTO complex) has tremendous and outperforming specific capacitance of 3058 F g-1 at 1 A g-1 current density with moderate cycling stability (∼60.3% after 1000 cycles at 10 A g-1). The as-prepared nanocomposite revealed excellent improvement in specific capacitance, cycling stability, Warburg impedance, and interfacial charge transfer resistance compared to neat CuS. The fabricated nanocomposites were also investigated for their bulk DC electrical conductivity and EMI shielding ability. It was observed that the CuS/RGO nanocomposite (9 wt % Cu-DTO) exhibited a total electromagnetic shielding efficiency of 64 dB at 2.3 GHz following absorption as a dominant shielding mechanism. Such a performance is ascribed to the presence of interconnected networks and synergistic effects.
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Affiliation(s)
- Kalyan Ghosh
- Department of Chemistry, Indian
Institute of Technology Kharagpur, Kharagpur 721302, India
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Zhang M, Hu H, Qi J, Wei F, Meng Q, Ren Y, Zhan Z, Sui Y, Sun Z. Expeditious and controllable synthesis of micron flower-like architecture Cu7S4@LSC via Ni ions morphology confinement for asymmetric button supercapacitor. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2020.137362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Binder-free CuS/ZnS/sodium alginate/rGO nanocomposite hydrogel electrodes for enhanced performance supercapacitors. Int J Biol Macromol 2020; 162:310-319. [DOI: 10.1016/j.ijbiomac.2020.06.169] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 06/14/2020] [Accepted: 06/17/2020] [Indexed: 12/17/2022]
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Wang L, Bo M, Guo Z, Li H, Huang Z, Che H, Feng Z, Wang Y, Mu J. Construction of ultra-stable trinickel disulphide (Ni 3S 2)/polyaniline (PANI) electrodes based on carbon fibers for high performance flexible asymmetric supercapacitors. J Colloid Interface Sci 2020; 577:29-37. [PMID: 32470702 DOI: 10.1016/j.jcis.2020.05.046] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 05/09/2020] [Accepted: 05/12/2020] [Indexed: 02/07/2023]
Abstract
Highly flexible supercapacitors (SCs) have attracted significant attention in modern electronics. However, it has been found that flexible, metal sulfide-based electrodes usually suffer from corrosion, instability and low conductivity, which significantly limits their large scale application. Herein, we report on an electrode comprised of highly stable, free-standing carbon fiber/trinickel disulphide covered with polyaniline (CF/Ni3S2@PANI). This electrode was prepared and then employed in a high-performance of flexible asymmetric SCs (FASC). The coating layer of polyaniline served as both a protector and conducting shell for the Ni3S2 due to the nature of the highly stable N-Ni bonds that formed between the polyaniline and Ni3S2. In addition, the lightweight carbon fiber support served as both a current collector and flexible support. The prepared CF/Ni3S2@PANI electrode exhibited a significantly enhanced specific capacity (715.3 F·g-1 at 1 A·g-1) compared with the carbon fiber/Ni3S2 electrode (318 F·g-1 at 1 A·g-1). More importantly, the assembled FASC device delivered an impressive energy density of 35.7 Wh·kg-1 at a power density of 850 W·kg-1. The FASC device benefited from the interconnected flexible microstructure and the stable bond bridges, so that it could be bent into various angles without noticeably impairing its performance. This effective protective strategy may further inspire the design and manufacture of metallic oxide or sulfide electrode with ultrahigh-stability interbond bridges for high-performance flexible supercapacitors.
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Affiliation(s)
- Lei Wang
- Institute of Novel Materials for Energy and Environment, College of Materials Science and Engineering, Hebei University of Engineering, Handan 056038, People's Republic of China
| | - Maolin Bo
- Key Laboratory of Extraordinary Bond Engineering and Advanced Materials Technology (EBEAM) of Chongqing, Yangtze Normal University, Chongqing 408100, People's Republic of China
| | - Zengcai Guo
- Institute of Novel Materials for Energy and Environment, College of Materials Science and Engineering, Hebei University of Engineering, Handan 056038, People's Republic of China.
| | - Huanhuan Li
- Institute of Novel Materials for Energy and Environment, College of Materials Science and Engineering, Hebei University of Engineering, Handan 056038, People's Republic of China
| | - Zhongkai Huang
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Hongwei Che
- Institute of Novel Materials for Energy and Environment, College of Materials Science and Engineering, Hebei University of Engineering, Handan 056038, People's Republic of China
| | - Zhihang Feng
- Institute of Novel Materials for Energy and Environment, College of Materials Science and Engineering, Hebei University of Engineering, Handan 056038, People's Republic of China
| | - Yanming Wang
- Institute of Novel Materials for Energy and Environment, College of Materials Science and Engineering, Hebei University of Engineering, Handan 056038, People's Republic of China
| | - Jingbo Mu
- Institute of Novel Materials for Energy and Environment, College of Materials Science and Engineering, Hebei University of Engineering, Handan 056038, People's Republic of China; Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, People's Republic of China.
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