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Xu Y, Yuan W, Geng C, Hu Z, Li Q, Zhao Y, Zhang X, Zhou Z, Yang C, Yang Q. High-Entropy Catalysis Accelerating Stepwise Sulfur Redox Reactions for Lithium-Sulfur Batteries. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2402497. [PMID: 38884340 PMCID: PMC11336958 DOI: 10.1002/advs.202402497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Indexed: 06/18/2024]
Abstract
Catalysis is crucial to improve redox kinetics in lithium-sulfur (Li-S) batteries. However, conventional catalysts that consist of a single metal element are incapable of accelerating stepwise sulfur redox reactions which involve 16-electron transfer and multiple Li2Sn (n = 2-8) intermediate species. To enable fast kinetics of Li-S batteries, it is proposed to use high-entropy alloy (HEA) nanocatalysts, which are demonstrated effective to adsorb lithium polysulfides and accelerate their redox kinetics. The incorporation of multiple elements (Co, Ni, Fe, Pd, and V) within HEAs greatly enhances the catalytically active sites, which not only improves the rate capability, but also elevates the cycling stability of the assembled batteries. Consequently, HEA-catalyzed Li-S batteries achieve a high capacity up to 1364 mAh g-1 at 0.1 C and experience only a slight capacity fading rate of 0.054% per cycle over 1000 cycles at 2 C, while the assembled pouch cell achieves a high specific capacity of 1192 mAh g-1. The superior performance of Li-S batteries demonstrates the effectiveness of the HEA catalysts with maximized synergistic effect for accelerating S conversion reactions, which opens a way to catalytically improving stepwise electrochemical conversion reactions.
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Affiliation(s)
- Yunhan Xu
- Nanoyang GroupTianjin Key Laboratory of Advanced Carbon and Electrochemical Energy StorageSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin300072China
| | - Wenchuang Yuan
- Interdisciplinary Research Center for Sustainable Energy Science and EngineeringSchool of Chemical EngineeringZhengzhou UniversityZhengzhou450001China
| | - Chuannan Geng
- Nanoyang GroupTianjin Key Laboratory of Advanced Carbon and Electrochemical Energy StorageSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin300072China
| | - Zhonghao Hu
- Nanoyang GroupTianjin Key Laboratory of Advanced Carbon and Electrochemical Energy StorageSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin300072China
| | - Qiang Li
- Nanoyang GroupTianjin Key Laboratory of Advanced Carbon and Electrochemical Energy StorageSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin300072China
| | - Yufei Zhao
- Nanoyang GroupTianjin Key Laboratory of Advanced Carbon and Electrochemical Energy StorageSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin300072China
| | - Xu Zhang
- Interdisciplinary Research Center for Sustainable Energy Science and EngineeringSchool of Chemical EngineeringZhengzhou UniversityZhengzhou450001China
| | - Zhen Zhou
- Interdisciplinary Research Center for Sustainable Energy Science and EngineeringSchool of Chemical EngineeringZhengzhou UniversityZhengzhou450001China
| | - Chunpeng Yang
- Nanoyang GroupTianjin Key Laboratory of Advanced Carbon and Electrochemical Energy StorageSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin300072China
| | - Quan‐Hong Yang
- Nanoyang GroupTianjin Key Laboratory of Advanced Carbon and Electrochemical Energy StorageSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin300072China
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Li T, Chen XH, Fu HC, Zhang Q, Yang B, Luo HQ, Li NB. Synergistic effects of interface and phase engineering on telluride toward alkaline/neutral hydrogen evolution reaction in freshwater/seawater. J Colloid Interface Sci 2024; 676:896-905. [PMID: 39068834 DOI: 10.1016/j.jcis.2024.07.166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 07/15/2024] [Accepted: 07/20/2024] [Indexed: 07/30/2024]
Abstract
The development of efficient, stable, and versatile hydrogen evolution electrocatalysts is of great meaning, but still faces challenging. Interface engineering and phase engineering have been immensely applied in the field of hydrogen evolution reaction (HER) because of their unique physicochemical properties. However, they are typically used separately, which limits their effectiveness. Herein, we propose an interface-engineered CoMo/CoTe electrocatalyst, consisting of an amorphous CoMo (a-CoMo) layer-encapsulated crystalline CoTe array, achieving the profound optimization of catalytic performance. The experimental results and density functional theory calculations show that the d-band center of the catalyst shifts further upward in contrast with its crystalline-crystalline counterpart, optimizing the electronic structure and the intermediate adsorption, thereby reducing the kinetic barrier of HER. The a-CoMo/CoTe with superhydrophilic/superaerophobic features shows excellent catalytic performance in alkaline, neutral, and simulated seawater environments.
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Affiliation(s)
- Ting Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Xiao Hui Chen
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Hong Chuan Fu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Qing Zhang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Bo Yang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Hong Qun Luo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
| | - Nian Bing Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
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3
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Sun M, Wang H, Wu H, Yang Y, Liu J, Cong R, Liang Z, Huang Z, Zheng J. Anion doping and interfacial effects in B-Ni 5P 4/Ni 2P for promoting urea-assisted hydrogen production in alkaline media. Dalton Trans 2024; 53:3559-3572. [PMID: 38284391 DOI: 10.1039/d3dt03340f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2024]
Abstract
A bifunctional catalyst used for urea oxidation-assisted hydrogen production can efficiently catalyze the urea oxidation reaction (UOR) and hydrogen evolution reaction (HER) simultaneously, thus simplifying electrolytic cell installation and reducing the cost. Constructing the heterointerface of two components or species and doping heteroatom are effective strategies to improve the performance of electrocatalysts, which could regulate the local electronic structure of the catalysts at their interface region, adjust their orbital overlap, and achieve enhanced catalytic performance. In this study, a simple hydrothermal method was studied for the preparation of B-doped Ni5P4/Ni2P heterostructures on nickel foam (B-Ni5P4/Ni2P@NF). Under 1 M KOH at a current density of 10 mA cm-2, an overpotential of 76 mV was obtained for the HER. When 0.3 M urea was added to 1 M KOH, the performance of the prepared catalyst was greatly improved. When the current density reached 10 mA cm-2, the potential was only 1.35 V. In addition, urea-assisted overall water splitting voltage was only 1.41 V. Thus, the B-Ni5P4/Ni2P catalyst possess excellent electrocatalytic activity. The main reason for the excellent properties of the electrocatalyst is the construction of heterostructure, which regulates the electronic structure of the catalyst at its interface and generates a new efficient active site. In addition, the doping of B atoms further promotes the charge transfer rate, thus strengthening the interaction between two phases and improving the catalytic performance. This study provides a simple, environmentally friendly, and rapid design method to prepare an active bi-functional electrocatalyst that has a positive effect on urea-assisted overall water splitting.
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Affiliation(s)
- Mingming Sun
- Basic Experimental Center for Natural Science, University of Science and Technology Beijing, Beijing, 100083, China
| | - Huichao Wang
- School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, China
| | - Hongjing Wu
- School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, China
| | - Yuquan Yang
- School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, China
| | - Jiajia Liu
- School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, China
| | - Riyu Cong
- School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, China
| | - Zhengwenda Liang
- Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
| | - Zhongning Huang
- School of Chemistry, Beihang University, Beijing, 100191, China
| | - Jinlong Zheng
- Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
- Shunde Innovation School, University of Science and Technology Beijing, Foshan, 528399, China
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4
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Zhang T, Jiang J, Sun W, Gong S, Liu X, Tian Y, Wang D. Spatial configuration of Fe-Co dual-sites boosting catalytic intermediates coupling toward oxygen evolution reaction. Proc Natl Acad Sci U S A 2024; 121:e2317247121. [PMID: 38294936 PMCID: PMC10861885 DOI: 10.1073/pnas.2317247121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 12/21/2023] [Indexed: 02/02/2024] Open
Abstract
Oxygen evolution reaction (OER) is the pivotal obstacle of water splitting for hydrogen production. Dual-sites catalysts (DSCs) are considered exceeding single-site catalysts due to the preternatural synergetic effects of two metals in OER. However, appointing the specific spatial configuration of dual-sites toward more efficient catalysis still remains a challenge. Herein, we constructed two configurations of Fe-Co dual-sites: stereo Fe-Co sites (stereo-Fe-Co DSC) and planar Fe-Co sites (planar-Fe-Co DSC). Remarkably, the planar-Fe-Co DSC has excellent OER performance superior to stereo-Fe-Co DSC. DFT calculations and experiments including isotope differential electrochemical mass spectrometry, in situ infrared spectroscopy, and in situ Raman reveal the *O intermediates can be directly coupled to form *O-O* rather than *OOH by both the DSCs, which could overcome the limitation of four electron transfer steps in OER. Especially, the proper Fe-Co distance and steric direction of the planar-Fe-Co benefit the cooperation of dual sites to dehydrogenate intermediates into *O-O* than stereo-Fe-Co in the rate-determining step. This work provides valuable insights and support for further research and development of OER dual-site catalysts.
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Affiliation(s)
- Taiyan Zhang
- Analytical Instrumentation Centre,Department of Chemistry, Capital Normal University, Beijing100048, People’s Republic of China
| | - Jingjing Jiang
- Institute of Analysis and Testing, Beijing Academy of Science and Technology (Beijing Center for Physical and Chemical Analysis),Beijing100094, People’s Republic of China
| | - Wenming Sun
- Analytical Instrumentation Centre,Department of Chemistry, Capital Normal University, Beijing100048, People’s Republic of China
| | - Shuyan Gong
- Analytical Instrumentation Centre,Department of Chemistry, Capital Normal University, Beijing100048, People’s Republic of China
| | - Xiangwen Liu
- Institute of Analysis and Testing, Beijing Academy of Science and Technology (Beijing Center for Physical and Chemical Analysis),Beijing100094, People’s Republic of China
| | - Yang Tian
- Analytical Instrumentation Centre,Department of Chemistry, Capital Normal University, Beijing100048, People’s Republic of China
| | - Dingsheng Wang
- Department of Chemistry, Tsinghua University, Beijing100084, People’s Republic of China
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Liang Y, Zhao X, Yan P, Xue L, Li H, Gu L, Long Y, Yu T, Yang Y. Crystalline Ni 5P 4/amorphous CePO 4 core/shell heterostructure arrays for highly-efficient electrocatalytic overall water splitting. J Colloid Interface Sci 2024; 655:565-575. [PMID: 37952460 DOI: 10.1016/j.jcis.2023.11.037] [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: 10/05/2023] [Revised: 11/03/2023] [Accepted: 11/06/2023] [Indexed: 11/14/2023]
Abstract
Exploring low-cost and highly efficient bifunctional electrocatalysts for overall water splitting has become a research focus recently. Crystalline/amorphous core/shell heterostructures have great potential for applications in the field of electrocatalytic overall water splitting. However, related research is still challenging. Herein, crystalline Ni5P4 nanosheets/amorphous CePO4 nanocrystals core/shell heterostructure arrays were developed for electrocatalytic overall water splitting. It is shown that the heterostructure array required competitive HER and OER overpotentials of 94 and 191 mV in alkaline environment (10 mA/cm2), respectively. Encouragingly, the symmetrical two-electrode system constructed with the heterostructure array only required an ultra-low cell voltage of 1.535 V to achieve a current density of 10 mA/cm2. This indicates the system has huge potential in overall water splitting. The electrocatalytic mechanism was studied systematically by combining theoretical calculation and experimental characterization. It was found that the surface coating of amorphous CePO4 could not only significantly increase the electrochemical active surface area and improve the charge transfer of crystalline Ni5P4 nanosheets, but could also regulate d-band center of Ni5P4 and optimize the adsorption towards reaction intermediates in water splitting. The results not only provide an excellent crystalline/amorphous core/shell heterostructure bifunctional electrocatalyst for overall water splitting but also greatly expand the application of rare earth metal phosphate CePO4.
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Affiliation(s)
- Yan Liang
- Department of Artificial Intelligence, Nanchang Key Laboratory of New Electronic Components and Sensing Technology, Jiangxi University of Technology, Nanchang 330098, Jiangxi, PR China
| | - Xiaojian Zhao
- Department of Artificial Intelligence, Nanchang Key Laboratory of New Electronic Components and Sensing Technology, Jiangxi University of Technology, Nanchang 330098, Jiangxi, PR China
| | - Peipei Yan
- Department of Artificial Intelligence, Nanchang Key Laboratory of New Electronic Components and Sensing Technology, Jiangxi University of Technology, Nanchang 330098, Jiangxi, PR China
| | - Li Xue
- Department of Artificial Intelligence, Nanchang Key Laboratory of New Electronic Components and Sensing Technology, Jiangxi University of Technology, Nanchang 330098, Jiangxi, PR China
| | - Hongying Li
- Department of Artificial Intelligence, Nanchang Key Laboratory of New Electronic Components and Sensing Technology, Jiangxi University of Technology, Nanchang 330098, Jiangxi, PR China
| | - Lisheng Gu
- Department of Artificial Intelligence, Nanchang Key Laboratory of New Electronic Components and Sensing Technology, Jiangxi University of Technology, Nanchang 330098, Jiangxi, PR China
| | - Yongdong Long
- Department of Artificial Intelligence, Nanchang Key Laboratory of New Electronic Components and Sensing Technology, Jiangxi University of Technology, Nanchang 330098, Jiangxi, PR China
| | - Ting Yu
- Jiangxi Key Laboratory of Nanomaterials and Sensors, Jiangxi Key Laboratory of Photoelectronics and Telecommunication, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang 330022, Jiangxi, PR China
| | - Yong Yang
- Jiangxi Key Laboratory of Nanomaterials and Sensors, Jiangxi Key Laboratory of Photoelectronics and Telecommunication, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang 330022, Jiangxi, PR China.
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Lan H, Wang J, Cheng L, Yu D, Wang H, Guo L. The synthesis and application of crystalline-amorphous hybrid materials. Chem Soc Rev 2024; 53:684-713. [PMID: 38116613 DOI: 10.1039/d3cs00860f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Crystalline-amorphous hybrid materials (CA-HMs) possess the merits of both pure crystalline and amorphous phases. Abundant dangling bonds, unsaturated coordination atoms, and isotropic structural features in the amorphous phase, as well as relatively high electronic conductivity and thermodynamic structural stability of the crystalline phase simultaneously take effect in CA-HMs. Furthermore, the atomic and bandgap mismatch at the CA-HM interface can introduce more defects as extra active sites, reservoirs for promoted catalytic and electrochemical performance, and induce built-in electric field for facile charge carrier transport. Motivated by these intriguing features, herein, we provide a comprehensive overview of CA-HMs on various aspects-from synthetic methods to multiple applications. Typical characteristics of CA-HMs are discussed at the beginning, followed by representative synthetic strategies of CA-HMs, including hydrothermal/solvothermal methods, deposition techniques, thermal adjustment, and templating methods. Diverse applications of CA-HMs, such as electrocatalysis, batteries, supercapacitors, mechanics, optoelectronics, and thermoelectrics along with underlying structure-property mechanisms are carefully elucidated. Finally, challenges and perspectives of CA-HMs are proposed with an aim to provide insights into the future development of CA-HMs.
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Affiliation(s)
- Hao Lan
- School of Chemistry, Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beihang University, Beijing, China.
| | - Jiawei Wang
- School of Chemistry, Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beihang University, Beijing, China.
| | - Liwei Cheng
- School of Chemistry, Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beihang University, Beijing, China.
| | - Dandan Yu
- School of Chemistry, Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beihang University, Beijing, China.
| | - Hua Wang
- School of Chemistry, Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beihang University, Beijing, China.
| | - Lin Guo
- School of Chemistry, Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beihang University, Beijing, China.
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7
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Zhao JW, Wang HY, Feng L, Zhu JZ, Liu JX, Li WX. Crystal-Phase Engineering in Heterogeneous Catalysis. Chem Rev 2024; 124:164-209. [PMID: 38044580 DOI: 10.1021/acs.chemrev.3c00402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
The performance of a chemical reaction is critically dependent on the electronic and/or geometric structures of a material in heterogeneous catalysis. Over the past century, the Sabatier principle has already provided a conceptual framework for optimal catalyst design by adjusting the electronic structure of the catalytic material via a change in composition. Beyond composition, it is essential to recognize that the geometric atomic structures of a catalyst, encompassing terraces, edges, steps, kinks, and corners, have a substantial impact on the activity and selectivity of a chemical reaction. Crystal-phase engineering has the capacity to bring about substantial alterations in the electronic and geometric configurations of a catalyst, enabling control over coordination numbers, morphological features, and the arrangement of surface atoms. Modulating the crystallographic phase is therefore an important strategy for improving the stability, activity, and selectivity of catalytic materials. Nonetheless, a complete understanding of how the performance depends on the crystal phase of a catalyst remains elusive, primarily due to the absence of a molecular-level view of active sites across various crystal phases. In this review, we primarily focus on assessing the dependence of catalytic performance on crystal phases to elucidate the challenges and complexities inherent in heterogeneous catalysis, ultimately aiming for improved catalyst design.
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Affiliation(s)
- Jian-Wen Zhao
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, iChem, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Hong-Yue Wang
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, iChem, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Li Feng
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, iChem, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jin-Ze Zhu
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, iChem, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jin-Xun Liu
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, iChem, University of Science and Technology of China, Hefei, Anhui 230026, China
- Hefei National Laboratory, University of Science and Technology of China, Hefei 230088, China
| | - Wei-Xue Li
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, iChem, University of Science and Technology of China, Hefei, Anhui 230026, China
- Hefei National Laboratory, University of Science and Technology of China, Hefei 230088, China
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8
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Qi L, Huang Z, Liao M, Wang L, Wang L, Gao M, Taylor Isimjan T, Yang X. Synergistic Promotion of Large-Current Water Splitting through Interfacial Engineering of Hierarchically Structured CoP-FeP Nanosheets with Rich P Vacancies. Chemistry 2023; 29:e202301521. [PMID: 37435858 DOI: 10.1002/chem.202301521] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 07/11/2023] [Accepted: 07/11/2023] [Indexed: 07/13/2023]
Abstract
The development of hydrogen evolution reaction (HER) catalysts with high performance under large current density is still a challenge. Introducing P vacancies in heterostructure is an appealing strategy to enhance HER kinetics. This study investigates a CoP-FeP heterostructure catalyst with abundant P vacancies (Vp-CoP-FeP/NF) on nickel foam (NF), which was prepared using dipping and phosphating treatment. The optimized Vp-CoP-FeP catalyst exerted prominent HER catalytic capability, requiring an ultra-low overpotential (58 mV @ 10 mA cm-2 ) and displaying robust durability (50 h @ 200 mA cm-2 ) in 1.0 M KOH solution. Furthermore, the catalyst demonstrated superior overall water splitting activity as cathode, demanding only cell voltage of 1.76 V at 200 mA cm-2 , outperforming Pt/C/NF(-) || RuO2 /NF(+) . The catalyst's outstanding performance can be attributed to the hierarchical structure of porous nanosheets, abundant P vacancies, and synergistic effect between CoP and FeP components, which promote water dissociation and H* adsorption and desorption, thereby synergically accelerating HER kinetics and enhancing HER activity. This study demonstrates the potential of HER catalysts with phosphorus-rich vacancies that can work under industrial-scale current density, highlighting the importance of developing durable and efficient catalysts for hydrogen production.
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Affiliation(s)
- Luoluo Qi
- Guangxi Key Laboratory of Low Carbon Energy Materials School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
| | - Zhiyang Huang
- Guangxi Key Laboratory of Low Carbon Energy Materials School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
| | - Miao Liao
- Guangxi Key Laboratory of Low Carbon Energy Materials School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
| | - Lei Wang
- Department of Food and Environment Engineering, Chuzhou Polytechnic, Chuzhou, 239000, China
| | - Lixia Wang
- Guangxi Key Laboratory of Low Carbon Energy Materials School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
| | - Mingcheng Gao
- Guangxi Key Laboratory of Low Carbon Energy Materials School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
| | - Tayirjan Taylor Isimjan
- Saudi Arabia Basic Industries Corporation (SABIC) at, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Xiulin Yang
- Guangxi Key Laboratory of Low Carbon Energy Materials School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
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Zou Y, Jin M, Zhu D, Tang YJ. Surface Adsorption of Amorphous Phosphate on RuNi-Doped Molybdate for the Hydrogen Evolution Reaction. Inorg Chem 2023; 62:15757-15765. [PMID: 37709672 DOI: 10.1021/acs.inorgchem.3c02683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/16/2023]
Abstract
Developing highly active and cost-effective electrocatalysts is critical for enhancing the intrinsic performance of electrocatalytic water splitting. Oxoanion-based compounds, such as phosphates and molybdates, have emerged as promising electrocatalysts owing to their advantageous properties of nontoxicity, low price, and strong water adsorption ability. However, their relatively inferior activity has impeded extensive investigation into electrochemical applications. Herein, an amorphous phosphate-adsorbed and RuNi-doped molybdate (RuNiMo-P) composite is synthesized on nickel foam (NF) support by using a simple two-step method. Significantly, an acidic solution of phosphomolybdic acid (PMo12), containing a low concentration of Ru, can etch the NF, contributing to the in situ growth of the RuNi-doped molybdate precursor. Subsequent phosphating ensures the surface formation of the amorphous phosphate layer due to abundant oxygen in the precursor. The strong structural interaction between RuNi-doped molybdate and amorphous phosphate in RuNiMo-P prompts an enhanced hydrogen evolution reaction (HER) performance, delivering an overpotential of 38 mV at a current density of -10 mA cm-2, a Tafel slope of 53 mV dec-1, and good stability in an alkaline medium. Characterizations after HER reveal that RuNi doping, partial dissolution of phosphate and molybdate species, and newly formed NiOOH nanosheets can expose active sites, facilitate charge transfer, and modify electronic structures, thereby improving the HER performance effectively.
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Affiliation(s)
- Yan Zou
- School of Chemistry and Materials Science, Institute of Advanced Materials and Flexible Electronics (IAMFE), Nanjing University of Information Science and Technology, 219 Ningliu Road, Nanjing 210044, P.R. China
| | - Man Jin
- School of Chemistry and Materials Science, Institute of Advanced Materials and Flexible Electronics (IAMFE), Nanjing University of Information Science and Technology, 219 Ningliu Road, Nanjing 210044, P.R. China
| | - Dongdong Zhu
- School of Chemistry and Materials Science, Institute of Advanced Materials and Flexible Electronics (IAMFE), Nanjing University of Information Science and Technology, 219 Ningliu Road, Nanjing 210044, P.R. China
| | - Yu-Jia Tang
- School of Chemistry and Materials Science, Institute of Advanced Materials and Flexible Electronics (IAMFE), Nanjing University of Information Science and Technology, 219 Ningliu Road, Nanjing 210044, P.R. China
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10
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Cha DC, Singh TI, Maibam A, Kim TH, Nam DH, Babarao R, Lee S. Metal-Organic Framework-Derived Mesoporous B-Doped CoO/Co@N-Doped Carbon Hybrid 3D Heterostructured Interfaces with Modulated Cobalt Oxidation States for Alkaline Water Splitting. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2301405. [PMID: 37165605 DOI: 10.1002/smll.202301405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/28/2023] [Indexed: 05/12/2023]
Abstract
Heteroatom-doped transition metal-oxides of high oxygen evolution reaction (OER) activities interfaced with metals of low hydrogen adsorption energy barrier for efficient hydrogen evolution reaction (HER) when uniformly embedded in a conductive nitrogen-doped carbon (NC) matrix, can mitigate the low-conductivity and high-agglomeration of metal-nanoparticles in carbon matrix and enhances their bifunctional activities. Thus, a 3D mesoporous heterostructure of boron (B)-doped cobalt-oxide/cobalt-metal nanohybrids embedded in NC and grown on a Ni foam substrate (B-CoO/Co@NC/NF) is developed as a binder-free bifunctional electrocatalyst for alkaline water-splitting via a post-synthetic modification of the metal-organic framework and subsequent annealing in different Ar/H2 gas ratios. B-CoO/Co@NC/NF prepared using 10% H2 gas (B-CoO/Co@NC/NF [10% H2 ]) shows the lowest HER overpotential (196 mV) and B-CoO/Co@NC/NF (Ar), developed in Ar, shows an OER overpotential of 307 mV at 10 mA cm-2 with excellent long-term durability for 100 h. The best anode and cathode electrocatalyst-based electrolyzer (B-CoO/Co@NC/NF (Ar)(+)//B-CoO/Co@NC/NF (10% H2 )(-)) generates a current density of 10 mA cm-2 with only 1.62 V with long-term stability. Further, density functional theory investigations demonstrate the effect of B-doping on electronic structure and reaction mechanism of the electrocatalysts for optimal interaction with reaction intermediates for efficient alkaline water-splitting which corroborates the experimental results.
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Affiliation(s)
- Dun Chan Cha
- Center for Bionano Intelligence Education and Research, Hanyang University ERICA, Ansan, 15588, Republic of Korea
- Department of Applied Chemistry, Hanyang University ERICA, Ansan, 15588, Republic of Korea
| | - Thangjam Ibomcha Singh
- Center for Bionano Intelligence Education and Research, Hanyang University ERICA, Ansan, 15588, Republic of Korea
- Department of Chemical and Molecular Engineering, Hanyang University ERICA, Ansan, 15588, Republic of Korea
- Department of Physics, Manipur University, Canchipur, Manipur, 795003, India
| | - Ashakiran Maibam
- School of Science, RMIT University, Melbourne, Victoria, 3001, Australia
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune, 411 008, India
- Academy of Scientific and Innovative Research, CSIR-Human Resource Development Centre (CSIR-HRDC) Campus, Postal Staff College Area, Ghaziabad, Uttar Pradesh, 201002, India
| | - Tae Hyeong Kim
- Center for Bionano Intelligence Education and Research, Hanyang University ERICA, Ansan, 15588, Republic of Korea
- Department of Applied Chemistry, Hanyang University ERICA, Ansan, 15588, Republic of Korea
| | - Dong Hwan Nam
- Center for Bionano Intelligence Education and Research, Hanyang University ERICA, Ansan, 15588, Republic of Korea
- Department of Applied Chemistry, Hanyang University ERICA, Ansan, 15588, Republic of Korea
| | - Ravichandar Babarao
- School of Science, RMIT University, Melbourne, Victoria, 3001, Australia
- Manufacturing, CSIRO, Normanby Road, Clayton, Victoria, 3168, Australia
| | - Seunghyun Lee
- Center for Bionano Intelligence Education and Research, Hanyang University ERICA, Ansan, 15588, Republic of Korea
- Department of Applied Chemistry, Hanyang University ERICA, Ansan, 15588, Republic of Korea
- Department of Chemical and Molecular Engineering, Hanyang University ERICA, Ansan, 15588, Republic of Korea
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11
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Gautam J, Chanda D, Mekete Meshesha M, Jang SG, Lyong Yang B. Manganese cobalt sulfide/molybdenum disulfide nanowire heterojunction as an excellent bifunctional catalyst for electrochemical water splitting. J Colloid Interface Sci 2023; 638:658-671. [PMID: 36774879 DOI: 10.1016/j.jcis.2023.02.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 01/30/2023] [Accepted: 02/06/2023] [Indexed: 02/11/2023]
Abstract
Heterointerface engineering enhances catalytic active centers and charge transfer capabilities to increase oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) kinetics. In this study, a novel heterostructure of manganese cobalt sulfide-molybdenum disulfide on nickel foam (MnCo2S4-MoS2/NF) was synthesized via a two-step hydrothermal process. The nanowire-shaped MnCo2S4-MoS2 on NF displayed accelerated charge transfer ability and multiple integrated active sites. When tested in one molar (1 M) potassium hydroxide (KOH) electrolyte, it furnished low overpotentials of 105 and 171 mV for the HER and 220 and 300 mV for the OER at the current densities of 20 and 50 mA cm-2, respectively. An electrolyzer based on MnCo2S4-MoS2/NF required low operating potentials of 1.41 and 1.49 V to yield the current densities of 10 and 20 mA cm-2, respectively, surpassing commercial and previously reported catalysts. Density functional theory (DFT) analysis revealed that the MnCo2S4-MoS2 heterostructure possesses the optimal adsorption free energies for the reactants, an extended electroactive surface area, good charge transfer ability, and reasonable density of electronic states close to the Fermi level, all of which contribute to the high activity of catalyst. Thus, heterointerface engineering is a promising strategy for creating efficient catalysts for overall water splitting.
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Affiliation(s)
- Jagadis Gautam
- School of Materials Science and Engineering, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi-si, Gyeongsangbuk-do 39177, Republic of Korea; GHS (Green H2 System) Co., Ltd., Gumi-si, Republic of Korea
| | - Debabrata Chanda
- School of Materials Science and Engineering, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi-si, Gyeongsangbuk-do 39177, Republic of Korea; GHS (Green H2 System) Co., Ltd., Gumi-si, Republic of Korea
| | - Mikiyas Mekete Meshesha
- School of Materials Science and Engineering, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi-si, Gyeongsangbuk-do 39177, Republic of Korea; GHS (Green H2 System) Co., Ltd., Gumi-si, Republic of Korea
| | - Seok Gwon Jang
- School of Materials Science and Engineering, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi-si, Gyeongsangbuk-do 39177, Republic of Korea; GHS (Green H2 System) Co., Ltd., Gumi-si, Republic of Korea
| | - Bee Lyong Yang
- School of Materials Science and Engineering, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi-si, Gyeongsangbuk-do 39177, Republic of Korea; GHS (Green H2 System) Co., Ltd., Gumi-si, Republic of Korea.
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12
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Huang Y, Chen H, Zhang B. Constructing Molybdenum Phosphide@Cobalt Phosphide Heterostructure Nanoarrays on Nickel Foam as a Bifunctional Electrocatalyst for Enhanced Overall Water Splitting. Molecules 2023; 28:molecules28093647. [PMID: 37175057 PMCID: PMC10180104 DOI: 10.3390/molecules28093647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/17/2023] [Accepted: 04/20/2023] [Indexed: 05/15/2023] Open
Abstract
The construction of multi-level heterostructure materials is an effective way to further the catalytic activity of catalysts. Here, we assembled self-supporting MoS2@Co precursor nanoarrays on the support of nickel foam by coupling the hydrothermal method and electrostatic adsorption method, followed by a low-temperature phosphating strategy to obtain Mo4P3@CoP/NF electrode materials. The construction of the Mo4P3@CoP heterojunction can lead to electron transfer from the Mo4P3 phase to the CoP phase at the phase interface region, thereby optimizing the charge structure of the active sites. Not only that, the introduction of Mo4P3 will make water molecules preferentially adsorb on its surface, which will help to reduce the water molecule decomposition energy barrier of the Mo4P3@CoP heterojunction. Subsequently, H* overflowed to the surface of CoP to generate H2 molecules, which finally showed a lower water molecule decomposition energy barrier and better intermediate adsorption energy. Based on this, the material shows excellent HER/OER dual-functional catalytic performance under alkaline conditions. It only needs 72 mV and 238 mV to reach 10 mA/cm2 for HER and OER, respectively. Meanwhile, in a two-electrode system, only 1.54 V is needed to reach 10 mA/cm2, which is even better than the commercial RuO2/NF||Pt/C/NF electrode pair. In addition, the unique self-supporting structure design ensures unimpeded electron transmission between the loaded nanoarray and the conductive substrate. The loose porous surface design is not only conducive to the full exposure of more catalytic sites on the surface but also facilitates the smooth escape of gas after production so as to improve the utilization rate of active sites. This work has important guiding significance for the design and development of high-performance bifunctional electrolytic water catalysts.
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Affiliation(s)
- Yingchun Huang
- Shunde Innovation School, University of Science and Technology Beijing, Foshan 528399, China
| | - Hongming Chen
- Shunde Innovation School, University of Science and Technology Beijing, Foshan 528399, China
| | - Busheng Zhang
- Shunde Innovation School, University of Science and Technology Beijing, Foshan 528399, China
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13
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Wang X, Yu X, Wu S, He P, Qin F, Yao Y, Bai J, Yuan G, Ren L. Crystalline-Amorphous Interface Coupling of Ni 3S 2/NiP x/NF with Enhanced Activity and Stability for Electrocatalytic Oxygen Evolution. ACS APPLIED MATERIALS & INTERFACES 2023; 15:15533-15544. [PMID: 36920420 DOI: 10.1021/acsami.3c00547] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The rational design of highly efficient and stable electrocatalysts for the oxygen evolution reaction (OER) is an urgent need but remains challenging for various sustainable energy systems. How to adjust the atomic structure and electronic structure of the active center is a key bottleneck problem. Accelerating the electron transfer process and the deep self-reconstruction of active sites could be a cost-effective strategy toward electrocatalytic OER catalyst development. Here, a crystalline-amorphous (c-a) coupled Ni3S2/NiPx electrocatalyst self-supported on nickel foam with an intimate interface was developed via a feasible solvothermal-electrochemistry method. The coupling interface of the crystalline structure with high conductivity and amorphous structure with numerous potential active sites could regulate the electronic structure and optimize the adsorption/desorption of O-containing species, ultimately resulting in high OER catalytic performance. The obtained Ni3S2/NiPx/NF presents a low OER overpotential of 265 mV to obtain 10 mA·cm-2 and a small Tafel slope of 51.6 mV·dec-1. Also, the catalyst with the coupled interface exhibited significantly enhanced long-term stability compared to the other two catalysts, with <5% decay in OER activity over 20 h of continuous operation, while that of Ni3S2/NF and NiPx/NF decreased by about 30 and 50%, respectively. This study provides inspiration for other energy conversion reactions in optimizing the performance of catalysts by coupling crystalline-amorphous structures.
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Affiliation(s)
- Xinyu Wang
- School of Chemistry & Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Xu Yu
- School of Chemistry & Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Shuang Wu
- School of Chemistry & Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Pinyi He
- School of Chemistry & Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Fu Qin
- School of Chemistry & Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Yongkang Yao
- School of Chemistry & Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Jianliang Bai
- School of Chemistry & Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Guojun Yuan
- School of Environment and Chemical Engineering, Anhui Vocational and Technical College, Hefei 230011, China
| | - Lili Ren
- School of Chemistry & Chemical Engineering, Southeast University, Nanjing 211189, China
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14
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Guo C, Chen Q, Zhong J, Peng W, Li Y, Zhang F, Fan X. Constructing Amorphous–Crystalline Interfaces of Nickel–Iron Phosphides/Oxides for Oxygen Evolution Reaction. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c04643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Affiliation(s)
- Caixia Guo
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
| | - Qiming Chen
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
| | - Jiayi Zhong
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
| | - Wenchao Peng
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
| | - Yang Li
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
| | - Fengbao Zhang
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
| | - Xiaobin Fan
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
- Institute of Shaoxing, Tianjin University, Zhejiang 312300, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
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15
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Zhang H, Xiao X, Xu H, Wang L, Li Y, Ouyang C, Zhong S. Two-dimensional metal-phase layered molybdenum disulfide for electrocatalytic hydrogen evolution reaction. NANOSCALE 2023; 15:4429-4437. [PMID: 36751735 DOI: 10.1039/d2nr06184h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The two-dimensional (2D) basal plane of metal-phase molybdenum disulphide (1T-MoS2) provides a large area of active sites to significantly reduce the overpotential of the hydrogen evolution reaction (HER), but the long preparation period limits its industrial application. Here, 1T-MoS2 catalysts derived from molybdenum blue solution (MBS) were prepared in one step using a rapid high-pressure microwave (MW-MoS2) strategy. This method eliminated the thermodynamic process with a long time required for Mo-O trioxide bond breakage and reduction (MoVI → MoIV) of the conventional hydrothermal method. Additionally, the introduction of heteroatomic oxygen atoms effectively reduced the build-up of MW-MoS2 and improved the monolayer/few-layer state and stability. Impressively, MW-MoS2 has outstanding electrocatalytic performance, with a low overpotential (62 mV) at 10 mA cm-2 and a small Tafel slope (42 mV dec-1). This provides a simple strategy for the rapid preparation of a 2D sulphide HER catalyst with performance close to that of commercial Pt/C.
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Affiliation(s)
- Hang Zhang
- Research Center for Ultrafine Powder Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, P.R. China.
| | - Xuejian Xiao
- Research Center for Ultrafine Powder Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, P.R. China.
| | - Hualan Xu
- Analytical and Testing Center, Jiangxi Normal University, Nanchang, 330022, P.R. China
| | - Lei Wang
- Research Center for Ultrafine Powder Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, P.R. China.
| | - Yuan Li
- Research Center for Ultrafine Powder Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, P.R. China.
| | - Chuying Ouyang
- Department of Physics, Laboratory of Computational Materials Physics, Jiangxi Normal University, Nanchang, 330022, P.R. China.
| | - Shengliang Zhong
- Research Center for Ultrafine Powder Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, P.R. China.
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16
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Jin Y, Zhang M, Song L, Zhang M. Research Advances in Amorphous-Crystalline Heterostructures Toward Efficient Electrochemical Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2206081. [PMID: 36526597 DOI: 10.1002/smll.202206081] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 11/25/2022] [Indexed: 06/17/2023]
Abstract
Interface engineering of heterostructures has proven a promising strategy to effectively modulate their physicochemical properties and further improve the electrochemical performance for various applications. In this context related research of the newly proposed amorphous-crystalline heterostructures have lately surged since they combine the superior advantages of amorphous- and crystalline-phase structures, showing unusual atomic arrangements in heterointerfaces. Nonetheless, there has been much less efforts in systematic analysis and summary of the amorphous-crystalline heterostructures to examine their complicated interfacial interactions and elusory active sites. The critical structure-activity correlation and electrocatalytic mechanism remain rather elusive. In this review, the recent advances of amorphous-crystalline heterostructures in electrochemical energy conversion and storage fields are amply discussed and presented, along with remarks on the challenges and perspectives. Initially, the fundamental characteristics of amorphous-crystalline heterostructures are introduced to provide scientific viewpoints for structural understanding. Subsequently, the superiorities and current achievements of amorphous-crystalline heterostructures as highly efficient electrocatalysts/electrodes for hydrogen evolution reaction, oxygen evolution reaction, supercapacitor, lithium-ion battery, and lithium-sulfur battery applications are elaborated. At the end of this review, future outlooks and opportunities on amorphous-crystalline heterostructures are also put forward to promote their further development and application in the field of clean energy.
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Affiliation(s)
- Yachao Jin
- Institute of Energy Supply Technology for High-end Equipment, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing, Jiangsu, 210044, P. R. China
| | - Mengxian Zhang
- Institute of Energy Supply Technology for High-end Equipment, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing, Jiangsu, 210044, P. R. China
| | - Li Song
- Institute of Energy Supply Technology for High-end Equipment, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing, Jiangsu, 210044, P. R. China
| | - Mingdao Zhang
- Institute of Energy Supply Technology for High-end Equipment, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing, Jiangsu, 210044, P. R. China
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17
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Zhao Q, Lu Z, Xie J, Hu J, Cao Y, Hao A. In Situ Construction of MnO 2-Co 3O 4 Nanosheet Heterojunctions on Co@NCNT Surfaces for Oxygen Evolution. Inorg Chem 2023; 62:3532-3540. [PMID: 36791254 DOI: 10.1021/acs.inorgchem.2c03955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Electrocatalytic water splitting is still circuitous and controversial because of the lack of highly active electrocatalysts to decrease the overpotential. Herein, we report a feasible method for constructing heterojunctions of MnO2-Co3O4 nanosheets on Co@NCNT support surfaces (MnO2-Co3O4/Co@NCNT) by spontaneous redox reactions. Experimental results indicate that Co embedded in Co@NCNT can be used as the carbon support and anchoring sites for heterojunctions, thus exposing a large number of active sites, adjusting the surface electronic structure, changing the OER rate-determining step of the catalyst, and reducing the reaction energy barrier. Besides, the in situ formation of MnO2-Co3O4 nanosheets on Co@NCNT inhibits the loss and aggregation of the catalyst, leading to robust structural stability. Therefore, the synergistic effects of these factors provide multi-functional active sites to enhance the intrinsic activity and achieve maximum catalytic performances. To deliver a current density of 10 mA cm-2, the catalyst of MnO2-Co3O4/Co@NCNT achieves an overpotential (η) of 303 mV in 1.0 M KOH media for OER. This simple redox strategy can be easily extended to prepare other ultrathin transition-metal oxide heterojunctions, which could be applied not only for water splitting but also for other energy conversion and storage technologies.
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Affiliation(s)
- Qiaoling Zhao
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources; Key Laboratory of Advanced Functional Materials, Autonomous Region; Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi, 830017 Xinjiang, PR China
| | - Zhenjiang Lu
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources; Key Laboratory of Advanced Functional Materials, Autonomous Region; Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi, 830017 Xinjiang, PR China
| | - Jing Xie
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources; Key Laboratory of Advanced Functional Materials, Autonomous Region; Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi, 830017 Xinjiang, PR China
| | - Jindou Hu
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources; Key Laboratory of Advanced Functional Materials, Autonomous Region; Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi, 830017 Xinjiang, PR China
| | - Yali Cao
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources; Key Laboratory of Advanced Functional Materials, Autonomous Region; Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi, 830017 Xinjiang, PR China
| | - Aize Hao
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources; Key Laboratory of Advanced Functional Materials, Autonomous Region; Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi, 830017 Xinjiang, PR China
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18
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Zhang Y, Gao F, Wang D, Li Z, Wang X, Wang C, Zhang K, Du Y. Amorphous/Crystalline Heterostructure Transition-Metal-based Catalysts for High-Performance Water Splitting. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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19
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In Situ Growth of Self-Supporting MOFs-Derived Ni2P on Hierarchical Doped Carbon for Efficient Overall Water Splitting. Catalysts 2022. [DOI: 10.3390/catal12111319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The in situ growth of metal organic framework (MOF) derivatives on the surface of nickel foam is a novel type of promising self-supporting electrode catalyst. In this paper, this work reports for the first time the strategy of in situ growth of Ni-MOF, where the metal source is purely provided by a nickel foam (NF) substrate without any external metal ions. MOF-derived Ni2P/NPC structure is achieved by the subsequent phosphidation to yield Ni2P on porous N, P-doped carbon (NPC) backbone. Such strategy provides the as-synthesized Ni2P/NPC/NF electrocatalyst an extremely low interfacial steric resistance. Moreover, a unique three-dimensional hierarchical structure is achieved in Ni2P/NPC/NF, providing massive active sites, short ion diffusion path, and high electrical conductivity. Directly applied as the electrode, Ni2P/NPC/NF demonstrates excellent electrocatalytic performance towards both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), with low overpotentials of only 58 mV and 208 mV to drive 10 mA cm−2, respectively, in 1 M KOH. Furthermore, Ni2P/NPC/NF acting as the overall water splitting electrodes can generate a current density of 10 mA cm−2 at an ultralow cell voltage of 1.53 V. This simple strategy paves the way for the construction of self-supporting transition metal-based electrocatalysts.
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Cerium-Doped CoMn2O4 Spinels as Highly Efficient Bifunctional Electrocatalysts for ORR/OER Reactions. Catalysts 2022. [DOI: 10.3390/catal12101122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Low-cost and highly efficient electrocatalysts for oxygen reactions are highly important for oxygen-related energy storage/conversion devices (e.g., solar fuels, fuel cells, and rechargeable metal-air batteries). In this work, a range of compositionally-tuned cerium-doped CoMn2O4 (Ce-CMO-X) spinels were prepared via oxidizing precipitation and subsequent crystallization method and evaluated as electrocatalysts for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). The Ce modification into the CMO spinels lead to the changes of surface electronic structure. And Ce-CMO-X catalysts display better electrochemical performance than that of pristine CMO spinel. Among them, Ce-CMO-18% shows the best activity. The Ce-CMO-18% processes a higher ratio of Co3+/Co2+, Mn4+/Mn3+, which is beneficial to ORR performance, while the higher content of oxygen vacancies in Ce-CMO-18% make for better OER performance. Thus, the Ce-doped CMO spinels are potential candidates as bifunctional electrocatalysts for both ORR and OER in alkaline environments. Then, the hybrid Ce-CMO-18%/MWCNTs catalyst was also synthesized, which shows further enhanced ORR and OER activities. It displays an ORR onset potential of 0.93 V and potential of 0.84 V at density of 3 mA cm−2 (at 1600 rpm), which is comparable to commercial Pt/C. The OER onset potential and potential at a current density 10 mA cm-2 are 183 mV and 341 mV. The superior electrical conductivity and oxygen functional groups at the surface of MWCNTs can facilitate the interaction between metal oxides and carbon, which promoted the OER and ORR performances significantly.
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