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Afaq M, Shahid M, Ahmad I, Yousaf S, Alazmi A, Mahmoud MHH, El Azab IH, Warsi MF. Large-scale sonochemical fabrication of a Co 3O 4-CoFe 2O 4@MWCNT bifunctional electrocatalyst for enhanced OER/HER performances. RSC Adv 2023; 13:19046-19057. [PMID: 37362336 PMCID: PMC10286564 DOI: 10.1039/d3ra03117a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 06/10/2023] [Indexed: 06/28/2023] Open
Abstract
Herein, we have prepared a mixed-phase Co3O4-CoFe2O4@MWCNT nanocomposite through a cheap, large-scale, and facile ultrasonication route followed by annealing. The structural, morphological, and functional group analyses of the synthesized catalysts were performed by employing various characterization approaches such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). The resultant samples were tested for bifunctional electrocatalytic activity through various electrochemical techniques: cyclic voltammetry (CV), linear sweep voltammetry (LSV), and electrochemical impedance spectroscopy (EIS). The prepared Co3O4-CoFe2O4@MWCNT nanocomposite achieved a very high current density of 100 mA cm-2 at a lower (290 mV and 342 mV) overpotential (vs. RHE) and a smaller (166 mV dec-1 and 138 mV dec-1) Tafel slope in the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), respectively, compared to Co3O4-CoFe2O4. The excellent electrochemical activity of the as-prepared electrocatalyst was attributed to the uniform incorporation of Co3O4-CoFe2O4 over MWCNTs which provides high redox active sites, a greater surface area, better conductivity, and faster charge mobility. Furthermore, the enhanced electrochemical active surface, low charge-transfer resistance (Rct), and higher exchange current density (J0) of the Co3O4-CoFe2O4@MWCNT ternary composite are attributed to its superior behavior as a bifunctional electrocatalyst. Conclusively, this study demonstrates a novel and large-scale synthesis approach for bifunctional electrocatalysts with a high aspect ratio and abundance of active sites for high-potential energy applications.
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Affiliation(s)
- Muhammad Afaq
- Institute of Chemistry, Baghdad-ul-Jadeed Campus, The Islamia University of Bahawalpur Bahawalpur 63100 Pakistan
| | - Muhammad Shahid
- Department of Chemistry, College of Science, University of Hafr Al Batin P.O. Box 1803 Hafr Al Batin Saudi Arabia
| | - Iqbal Ahmad
- Department of Chemistry, Allama Iqbal Open University Islamabad 44000 Pakistan
| | - Sheraz Yousaf
- Institute of Chemistry, Baghdad-ul-Jadeed Campus, The Islamia University of Bahawalpur Bahawalpur 63100 Pakistan
| | - Amira Alazmi
- Department of Science and Technology, University Colleges at Nairiyah, University of Hafr Al Batin Nairiyah 31981 Saudi Arabia
| | - M H H Mahmoud
- Department of Chemistry, College of Science, Taif University Taif 21944 Saudi Arabia
| | - Islam H El Azab
- Department of Food Science and Nutrition, College of Science, Taif University P.O. Box 11099 Taif 21944 Saudi Arabia
| | - Muhammad Farooq Warsi
- Institute of Chemistry, Baghdad-ul-Jadeed Campus, The Islamia University of Bahawalpur Bahawalpur 63100 Pakistan
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Chen Z, Dong S, Wang M, Hu Z, Chen H, Han Y, Yuan D. Construction of 3D Hierarchical Co 3O 4@CoFe-LDH Heterostructures with Effective Interfacial Charge Redistribution for Rechargeable Liquid/Solid Zn-Air Batteries. Inorg Chem 2023; 62:2826-2837. [PMID: 36710494 DOI: 10.1021/acs.inorgchem.2c04154] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Constructing three-dimensional (3D) hierarchical heterostructures is an appealing but challenging strategy to improve the performance of catalysts for electrical energy devices. Here, an efficient and robust flexible self-supporting catalyst, interface coupling of ultrathin CoFe-LDH nanosheets and Co3O4 nanowire arrays on the carbon cloth (CC/Co3O4@CoFe-LDH), was proposed for boosting oxygen evolution reaction (OER) in rechargeable liquid/solid Zn-air batteries (ZABs). The strong interfacial interaction between the CoFe-LDH and Co3O4 heterostructures stimulated the charge redistribution in their coupling regions, which improved the electron conductivity and optimized the adsorption free energy of OER intermediates, ultimately boosting the intrinsic OER performance. Besides, the 3D hierarchical nanoarray structure facilitated the exposure of catalytically active centers and rapid electron/mass transfer during the OER process. As such, the CC/Co3O4@CoFe-LDH catalyst achieved excellent OER catalytic activity in alkaline medium, with a small overpotential of 237 mV at 10 mA cm-2, a low Tafel slope of 35.43 mV dec-1, and long-term durability of up to 48 h, significantly outperforming the commercial RuO2 catalyst. More impressively, the liquid and flexible solid-state ZABs assembled by the CC/Co3O4@CoFe-LDH hybrid catalyst as the OER catalyst presented a stable open circuit voltage, large power density, superb cycling life, and satisfactory flexibility, indicating great potential applications in energy technology. This work provides a good guidance for the development of advanced electrocatalysts with heterostructures and an in-depth understanding of electronic modulation at the heterogeneous interface.
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Affiliation(s)
- Zihao Chen
- Industrial Research Institute of Nonwovens & Technical Textiles, Shandong Center for Engineered Nonwovens, College of Textiles & Clothing, Qingdao University, Qingdao 266071 Shandong, P. R. China
| | - Senjie Dong
- Industrial Research Institute of Nonwovens & Technical Textiles, Shandong Center for Engineered Nonwovens, College of Textiles & Clothing, Qingdao University, Qingdao 266071 Shandong, P. R. China
| | - Minghui Wang
- Industrial Research Institute of Nonwovens & Technical Textiles, Shandong Center for Engineered Nonwovens, College of Textiles & Clothing, Qingdao University, Qingdao 266071 Shandong, P. R. China
| | - Zunpeng Hu
- Industrial Research Institute of Nonwovens & Technical Textiles, Shandong Center for Engineered Nonwovens, College of Textiles & Clothing, Qingdao University, Qingdao 266071 Shandong, P. R. China
| | - Huiling Chen
- Industrial Research Institute of Nonwovens & Technical Textiles, Shandong Center for Engineered Nonwovens, College of Textiles & Clothing, Qingdao University, Qingdao 266071 Shandong, P. R. China
| | - Ye Han
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266071 Shandong, P. R. China
| | - Ding Yuan
- Industrial Research Institute of Nonwovens & Technical Textiles, Shandong Center for Engineered Nonwovens, College of Textiles & Clothing, Qingdao University, Qingdao 266071 Shandong, P. R. China
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Lu Y, Zheng X, Liu Y, Zhu J, Li D, Jiang D. Synergistically Coupled CoMo/CoMoP Electrocatalyst for Highly Efficient and Stable Overall Water Splitting. Inorg Chem 2022; 61:8328-8338. [PMID: 35580901 DOI: 10.1021/acs.inorgchem.2c00923] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Finding reservoir-rich and efficient bifunctional electrocatalysts for water splitting is key to further sustainable energy development. Transition metal phosphides (TMPs) are extensively exploited as effective electrocatalysts, but the construction of strong coupling interfaces to improve catalytic performance by simple methods is still a bottleneck. Here, we designed and prepared a novel heterostructure electrocatalyst composed of cobalt-molybdenum (CoMo) alloy particles integrated with CoMoP nanosheets via the method of template-assisted conversion, followed by electrodeposition. Thanks to the strong interfacial coupling and synergistic effect between CoMo alloy particles and CoMoP nanosheets, the prepared CoMo/CoMoP/NF shows outstanding activity with overpotentials of only 29 mV for the hydrogen evolution reaction (HER) and 246 mV for the oxygen evolution reaction (OER) in 1 M KOH at a current density of 10 mA cm-2. Furthermore, the assembled CoMo/CoMoP || CoMo/CoMoP electrode can attain 10 mA cm-2 with a low battery voltage of 1.54 V. This study offers a valuable reference to the construction of bimetallic alloy/bimetallic phosphide heterostructure electrocatalysts, which applies to the large-scale application of electrocatalytic energy conversion technology.
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Affiliation(s)
- Yikai Lu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Xinyu Zheng
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Yu Liu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Jianjun Zhu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Di Li
- Institute for Energy Research, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Deli Jiang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
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Zaman N, Iqbal N, Noor T. Advances and challenges of MOF derived carbon-based electrocatalysts and photocatalyst for water splitting: a review. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.103906] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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Investigation of the stability of the Boron-Doped Diamond support for Co3O4-based oxygen evolution reaction catalysts synthesized through in situ autocombustion method. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Zaman N, Noor T, Iqbal N. Recent advances in the metal–organic framework-based electrocatalysts for the hydrogen evolution reaction in water splitting: a review. RSC Adv 2021; 11:21904-21925. [PMID: 35480834 PMCID: PMC9034227 DOI: 10.1039/d1ra02240g] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Accepted: 06/09/2021] [Indexed: 01/18/2023] Open
Abstract
Water splitting is an important technology for alternative and sustainable energy storage, and a way for the production of hydrogen without generating pollution.
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Affiliation(s)
- Neelam Zaman
- U.S.-Pakistan Centre for Advanced Studies in Energy (USPCAS-E)
- National University of Sciences and Technology (NUST)
- Islamabad 44000
- Pakistan
| | - Tayyaba Noor
- School of Chemical and Materials Engineering (SCME)
- National University of Sciences and Technology (NUST)
- Islamabad 44000
- Pakistan
| | - Naseem Iqbal
- U.S.-Pakistan Centre for Advanced Studies in Energy (USPCAS-E)
- National University of Sciences and Technology (NUST)
- Islamabad 44000
- Pakistan
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