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Helal G, Xu Z, Zuo W, Yu Y, Liu J, Su H, Xu J, Li H, Cheng G, Zhao P. Electrochemical water splitting enhancement by introducing mesoporous NiCoFe-trimetallic phosphide nanosheets as catalysts for the oxygen evolution reaction. RSC Adv 2024; 14:17202-17212. [PMID: 38808232 PMCID: PMC11132062 DOI: 10.1039/d4ra02344g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Accepted: 05/13/2024] [Indexed: 05/30/2024] Open
Abstract
Transition metal-based catalysts are widely used in electrocatalysis, especially in the field of water splitting, due to their excellent electrochemical performance, which focuses on improving the efficiency of the complex oxygen evolution reaction (OER) that occurs at the anode. Transition metal-based catalysts will undergo electrochemical surface reconstruction and form (oxy)hydroxide-based hybrids, which consider the actual active sites for OER. So many efforts have been made to know the origin of the effect of electrochemical surface reconstruction on the performance of the OER. Herein, NiCoFe-phosphide catalyst nanosheets were constructed by a simple one-step hydrothermal reaction by adding oleylamine and ethanol to water solvent during the preparation of the catalyst precursor and high-temperature gas-phase phosphating and significantly showed high effectiveness catalytic activity and conductivity in comparison to normal and traditional preparation methods. Electrochemical analysis, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and high-resolution transmission electron microscopy (HRTEM) demonstrate that the surface was constructed during the electrochemical reaction and formed an amorphous layer of MOx(OH)y active sites, which increased the electrochemical surface area and promoted charge transfer. As well, the synthesized NiCoFePx-PNSs catalyst nanosheets exhibit excellent catalytic activity with a low overpotential equal to 259 mV to achieve the OER at a current density of 10 mA cm-2 and a low Tafel slope of 50.47 mV dec-1 which is better than for most reported transition metal-based electrocatalysts. This work provides a new design for a transition metal-based catalyst for OER as well as further insights into the effect of electrochemical surface reconstruction on intrinsic activity and OER performance.
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Affiliation(s)
- Gouda Helal
- College of Chemistry and Molecular Sciences, Wuhan University Wuhan Hubei 430072 P. R. China
- Faculty of Science, Benha University Benha City Kalyobiya Egypt
| | - Zhenhang Xu
- College of Chemistry and Molecular Sciences, Wuhan University Wuhan Hubei 430072 P. R. China
| | - Wei Zuo
- College of Chemistry and Molecular Sciences, Wuhan University Wuhan Hubei 430072 P. R. China
| | - Yueying Yu
- School of Nursing, Wuhan University Wuhan Hubei 430072 P. R. China
| | - Jinyan Liu
- Department of Biological and Chemical Engineering, Zhixing College of Hubei University Wuhan 430011 P. R. China
| | - Hongping Su
- Gansu Yinguang Chemical Industry Group Co., Ltd Baiyin 730900 P. R. China
| | - Jianxin Xu
- Gansu Yinguang Chemical Industry Group Co., Ltd Baiyin 730900 P. R. China
| | - Houbin Li
- School of Nursing, Wuhan University Wuhan Hubei 430072 P. R. China
| | - Gongzhen Cheng
- College of Chemistry and Molecular Sciences, Wuhan University Wuhan Hubei 430072 P. R. China
| | - Pingping Zhao
- School of Nursing, Wuhan University Wuhan Hubei 430072 P. R. China
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NiFeMn-Layered Double Hydroxides Linked by Graphene as High-Performance Electrocatalysts for Oxygen Evolution Reaction. NANOMATERIALS 2022; 12:nano12132200. [PMID: 35808036 PMCID: PMC9268598 DOI: 10.3390/nano12132200] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 06/17/2022] [Accepted: 06/25/2022] [Indexed: 01/02/2023]
Abstract
Currently, precious metal group materials are known as the efficient and widely used oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) catalysts. The exorbitant prices and scarcity of the precious metals have stimulated scale exploration of alternative non-precious metal catalysts with low-cost and high performance. Layered double hydroxides (LDHs) are a promising precursor to prepare cost-effective and high-performance catalysts because they possess abundant micropores and nitrogen self-doping after pyrolysis, which can accelerate the electron transfer and serve as active sites for efficient OER. Herein, we developed a new highly active NiFeMn-layered double hydroxide (NFM LDH) based electrocatalyst for OER. Through building NFM hydroxide/oxyhydroxide heterojunction and incorporation of conductive graphene, the prepared NFM LDH-based electrocatalyst delivers a low overpotential of 338 mV at current density of 10 mA cm−2 with a small Tafel slope of 67 mV dec−1, which are superior to those of commercial RuO2 catalyst for OER. The LDH/OOH heterojunction involves strong interfacial coupling, which modulates the local electronic environment and boosts the kinetics of charge transfer. In addition, the high valence Fe3+ and Mn3+ species formed after NaOH treatment provide more active sites and promote the Ni2+ to higher oxidation states during the O2 evolution. Moreover, graphene contributes a lot to the reduction of charge transfer resistance. The combining effects have greatly enhanced the catalytic ability for OER, demonstrating that the synthesized NFM LDH/OOH heterojunction with graphene linkage can be practically applied as a high-performance electrocatalyst for oxygen production via water splitting.
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Du X, Zhang W, Zhang M, Ji Y, Su K, Li Z. Dual-Metal Zeolitic Imidazolate Framework Derived Highly Ordered Hierarchical Nanoarrays on Self-Supported Carbon Fiber for Oxygen Evolution. MATERIALS 2022; 15:ma15124170. [PMID: 35744229 PMCID: PMC9227379 DOI: 10.3390/ma15124170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/07/2022] [Accepted: 06/09/2022] [Indexed: 02/04/2023]
Abstract
The construction of highly ordered hierarchical nanoarrays is crucial for obtaining effective transition metal carbon nanomaterial electrocatalysts for oxygen evolution reaction (OER) in water splitting. Herein, we adopted a Co metal zeolitic imidazolate framework (Co-ZIF) as a precursor by ion-exchange/etching reaction with Fe(NO3)3 to obtain hierarchical N-doped Co-Fe layered double hydroxide (CoFe-LDH) in situ generated in Co-ZIF nanoarrays based on a self-supported carbon cloth (CC) substrate noted as CoFe-LDH@Co-ZIF@CC. Benefiting from the synergistic effect of these species and their highly ordered self-supported nanoarray structure, the catalytic active sites were fully exposed and highly protected in alkaline electrolyte, which significantly promoted electron transport and improved electrochemical performance. The CoFe-LDH@Co-ZIF@CC exhibited the low overpotentials of about 225 and 319 mV at 10 and 100 mA cm−2 with a small Tafel slope of 81.8 mV dec−1 recorded in a 1.0 M KOH electrolyte. In addition, it also showed a long-term durability without obvious decay after 30 h. Therefore, its remarkable OER activity demonstrates this material’s promising application in the green hydrogen energy industry.
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Affiliation(s)
- Xi Du
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; (W.Z.); (M.Z.); (Y.J.); (K.S.)
- School of Materials Science and Engineering, Tianjin Key Laboratory of Advanced Fibers and Energy Storage, Tiangong University, Tianjin 300387, China
- Correspondence: (X.D.); (Z.L.); Tel.: +86-022-83955358 (Z.L.)
| | - Wenjun Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; (W.Z.); (M.Z.); (Y.J.); (K.S.)
- School of Materials Science and Engineering, Tianjin Key Laboratory of Advanced Fibers and Energy Storage, Tiangong University, Tianjin 300387, China
| | - Maliang Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; (W.Z.); (M.Z.); (Y.J.); (K.S.)
- School of Materials Science and Engineering, Tianjin Key Laboratory of Advanced Fibers and Energy Storage, Tiangong University, Tianjin 300387, China
| | - Yanhong Ji
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; (W.Z.); (M.Z.); (Y.J.); (K.S.)
- School of Materials Science and Engineering, Tianjin Key Laboratory of Advanced Fibers and Energy Storage, Tiangong University, Tianjin 300387, China
| | - Kunmei Su
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; (W.Z.); (M.Z.); (Y.J.); (K.S.)
- School of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300387, China
| | - Zhenhuan Li
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; (W.Z.); (M.Z.); (Y.J.); (K.S.)
- School of Materials Science and Engineering, Tianjin Key Laboratory of Advanced Fibers and Energy Storage, Tiangong University, Tianjin 300387, China
- Correspondence: (X.D.); (Z.L.); Tel.: +86-022-83955358 (Z.L.)
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