Journal of Materials Chemistry A
·
2024
·
IF 10.7
Tao Chen,Yulong Li,Fangpei Ma,Mingdong Sun,Ping Fu,Xiaoling Liu,Yu Zhou,Jun Wang
Paired electrocatalytic systems have emerged as a promising approach for the synthesis of high-value-added fine chemicals from renewable resources like biomass, however, a high-performing bifunctional catalyst is urgent to reduce the overall cell voltage and enhance the current efficiency. Herein, amino-tethered Ni3S2/MoS2 heterojunction (NiMoSx-NH2) was constructed as the bifunctional catalyst simultaneously for the anodic 5-Hydroxymethylfurfural oxidation into furan dicarboxylic acid and cathodic 4-nitrophenol hydrogenation into P-aminophenol, providing the high conversion/yield/Faradic efficiency above 98% on both electrodes. Amino-tethered Ni3S2/MoS2 heterojunction, on the one hand, accelerated the electron transfer, and on the other hand, promoted the catalysts’ proton-coupled electron transfer process to generate NiIII-O(OH)ad at the anode and H* desorption at the cathode. A highly efficient paired electrolyzer with NiMoSx-NH2 as a bifunctional catalyst was assembled, showing an extremely low cell voltage of 0.89 V at 10 mA cm-2 and ~200% current efficiency at 1.75 V for the overall reaction.
研究领域:
电化学
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催化材料
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能源化学
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2022
·Vol. 19
·期 2
·2205719
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IF 15.153
Wenjun He,Rui Zhang,Da Cao,Ying Li,Jun Zhang,Qiuyan Hao,Hui Liu,Jianling Zhao,Huolin L. Xin
Exploiting active and stable non-precious metal electrocatalysts for alkaline hydrogen evolution reaction (HER) at large current density plays a key role in realizing large-scale industrial hydrogen generation. Herein, a self-supported microporous Ni(OH) x /Ni 3 S 2 heterostructure electrocatalyst on nickel foam (Ni(OH) x /Ni 3 S 2 /NF) that possesses super-hydrophilic property through an electrochemical process is rationally designed and fabricated. Benefiting from the super-hydrophilic property, microporous feature, and self-supported structure, the electrocatalyst exhibits an exceptional HER performance at large current density in 1.0 M KOH, only requiring low overpotential of 126, 193, and 238 mV to reach a current density of 100, 500, and 1000 mA cm −2 , respectively, and displaying a long-term durability up to 1000 h, which is among the state-of-the-art non-precious metal electrocatalysts. Combining hard X-rays absorption spectroscopy and first-principles calculation, it also reveals that the strong electronic coupling at the interface of the heterostructure facilitates the dissociation of H 2 O molecular, accelerating the HER kinetics in alkaline electrolyte. This work sheds a light on developing advanced non-precious metal electrocatalysts for industrial hydrogen production by means of constructing a super-hydrophilic microporous heterostructure.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
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IF 4.175
Yingyuan Zhao,Jing Guo,Anmin Liu,Tingli Ma
2D materials and their composites are promising energy storage candidates. In this work, 2D horizontal heterostructure comprised of Ni 3 S 2 /delaminated-Ti 3 C 2 , denoted as Ni 3 S 2 /d-Ti 3 C 2 , supported on Ni foam is prepared by a two-step method and used as binder free electrode for hybrid supercapacitor . The as-obtained composites are characterized by X-ray diffraction analysis, scanning electron microscope, transmission electron microscope and X-ray photoelectron spectroscopy. The electrochemical properties of Ni 3 S 2 /d-Ti 3 C 2 on Ni foam (denoted as Ni 3 S 2 /d-Ti 3 C 2 /NF) are studied using cyclic voltammetry , galvanostatic charge-discharge analysis and electrochemical impedance spectroscopy . It is found that the Ni 3 S 2 /d-Ti 3 C 2 /NF electrode exhibits superior capacitive performance with specific capacity of 2204 F g −1 at a constant current density of 1 A g −1 . A hybrid supercapacitor is fabricated by using Ni 3 S 2 /d-Ti 3 C 2 /NF electrode as positive electrode, active carbon (AC) coated on Ni foam as negative electrode and KOH aqueous solution as electrolyte. The Ni 3 S 2 /d-Ti 3 C 2 /NF//AC hybrid supercapacitor exhibits a maximum energy density of 23.6 W h kg −1 and a maximum power density of 4004.4 W kg −1 . The results supply new strategy for constructing MXene-based 2D horizontal heterostructure, and suggest that Ni 3 S 2 /d-Ti 3 C 2 /NF composite as a binder free electrode is an ideal candidate for supercapacitor applications.
研究领域:
材料科学
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能源存储与转换
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Meixia Xiao,Chenyang Liu,Haiyang Song,Cheng He,Zhijie Hu,Ying Lv,Weiling Jiang
The highly efficient, knockdown cost and ultra-durable Ni-based composite electrocatalysts are the competitive candidates for hydrogen evolution reaction (HER) in the alkaline electrolytic water industry. The design of porous Ni-based electrocatalysts via constructing heterostructures and co-doping non-precious transition metals to realize the impressive promotion of limited activity and stability remains challenging. Herein, Ni 3 S 2 deposited on porous nickel foams (Ni 3 S 2 /NF) Ni 3 S 2 with Co and Fe co-dopants on NF (Co-Fe-Ni 3 S 2 /NF) electrocatalysts were successfully prepared by a one-step hydrothermal method. Compared with Ni 3 S 2 /NF nanosheets, Co-Fe-Ni 3 S 2 /NF nanosheets exhibit preferable electrocatalytic activity and superior stability with the minor overpotentials in the alkaline HER process. Co-Fe-Ni 3 S 2 /NF nanosheets display low overpotentials and maintain the morphology during durability tests, demonstrating the excellent durability. The experimental and density functional theory results confirm that constructing heterostructures and co-doping non-precious transition metals can synergistically increase the active sites and enhance the electrical conductivity, improving the charge transfer paths in Ni 3 S 2 /NF nanosheets, thereby bringing in a faster kinetics and superior HER activity. The results demonstrate significant potential of Co-Fe-Ni 3 S 2 /NF nanosheets in electrochemical water splitting.
研究领域:
电化学
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材料科学
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催化
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纳米技术
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理论化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2024
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IF 20.2
Shanpeng Li,Yuling Zhuo,Dong Liu,Hui Pan,Zhenbo Wang
Improving the Pt atoms utilization efficiency on self-supported electrodes is crucial for industrial seawater hydrogen production , but effective strategies are still lacking. Herein, we reported a novel strategy to anchor highly surface-exposed Pt single atoms on Ni 3 S 2 /Co 9 S 8 with abundant S vacancies (Pt–Ni 3 S 2 /Co 9 S 8 –Sv) as a self-supported electrode. Physical characterizations and theoretical calculations confirm that the strong Pt–S electron bridges with the coordinating role of surface S vacancies triggers the d -orbital electron rearrangements and regulates the local electron structures between the Co/Ni and Pt sites. Notably, the Pt–Ni 3 S 2 /Co 9 S 8 –Sv electrode displays an ultralow overpotential of 18 mV at 10 mA cm −2 in alkaline seawater . More importantly, our Pt–Ni 3 S 2 /Co 9 S 8 –Sv electrode assembled into an alkaline electrolysis cell can work continuously for 50 h under alkaline seawater @ 60 °C. This work provides a promising strategy for designing highly surface-exposed single-atomic catalyst for large-scale hydrogen evolution through seawater electrolysis.
研究领域:
材料科学
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催化化学
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能源化学
✓ 已验证
产品关联
DOI
高影响因子
Chemistry-An Asian Journal
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2024
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IF 3.5
Xinxin Dai,Zhen Tang,Xinyuan Yan,Shiyi Tao,Shanshan Wang,Yi Liu,Jiafeng Cao,Xiaolong Deng,Xin Bo
The exploring and developing non-precious transition metal-based catalysts for practical water electrolysis with the low cost, high efficiency and easy macroscopic preparation was still a challenge. Herein, Ni 3 S 2 /Ni(OH) 2 heterojunction with different sulfuration time was proposed and hydrothermally synthesized using a simple two-step approach, which served as a bifunctional electrocatalyst for water splitting in alkaline solution at industrial temperature. Among these catalysts, Ni 3 S 2 /Ni(OH) 2 -5h displayed the smallest overpotentials (237 mV@100 mA cm −2 and 360 mV@100 mA cm −2 ) for OER and HER at room temperature, along with low Tafel slopes of 62.0 mV dec −1 and 80.8 mV dec −1 respectively. Furthermore, working at high temperature Ni 3 S 2 /Ni(OH) 2 -5h exhibited even lower overpotential of 82 mV@100 mA cm −2 at 70 °C for OER and 325 mV@100 mA cm −2 at 60 °C for HER. The excellent performance was ascribed to the heterojunction accelerating the charge transfer, hierarchical interconnected structure promoting the mass transfer and the synergistic effect between the components of Ni 3 S 2 and Ni(OH) 2 . This work could provide a promising route for promoting the electrocatalytic performance of Ni-based catalyst with a simple sulfuration method for industrial water splitting, which could expand to other non-noble metal-based materials for enhancing the electrocatalytic activities.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 3
·493
·
IF 5.3
Meng Shao,Jun Li,Jing Li,Yanan Yan,Ruoliu Li
Honeycomb-like Ni(OH)2/Ni3S2/Ni foam (NF) was fabricated via a two-step hydrothermal process and subsequent alkalization. Ni3S2with a honeycombed structure was in-situ synthesized on the NF surface by a hydrothermal process. MOF-derived Ni(OH)2nanosheets were then successfully grown on the Ni3S2/NF surface by a second hydrothermal process and alkaline treatment, and a large number of nanosheets were interconnected to form a typical honeycomb-like structure with a large specific surface area and porosity. As a binder-free electrode, the prepared honeycomb-like Ni(OH)2/Ni3S2/NF exhibited a high specific capacitance (2207 F·g−1at 1 A·g−1, 1929.7 F·g−1at 5 mV·s−1) and a remarkable rate capability and cycling stability, with 62.3% of the initial value (1 A·g−1) retained at 10 A·g−1and 90.4% of the initial value (first circle at 50 mV·s−1) retained after 5000 cycles. A hybrid supercapacitor (HSC) was assembled with Ni(OH)2/Ni3S2/NF as the positive electrode and activated carbon (AC) as the negative electrode and exhibited an outstanding energy density of 24.5 Wh·kg−1at the power density of 375 W·kg−1. These encouraging results render the electrode a potential candidate for energy storage.Keywords:Ni(OH)2/Ni3S2/NF;honeycomb-like structure;two-step hydrothermal;alkalization;MOF-derived Ni(OH)2;supercapacitor
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2019
·
IF 4.084
Maoxiao He,Shengnan Hu,Chuanqi Feng,Huimin Wu,Huakun Liu,He Mei
In targeting the most important energy and environmental issues in current society, the development of low-cost, bifunctional electrocatalysts for urea-assisted electrocatalytic hydrogen (H 2 ) production is an urgent and challenging task. In this work, interlaced rosette-like MoS 2 /Ni 3 S 2 /NiFe-layered double hydroxide/nickel foam (LDH/NF) is successfully synthesized by a two-step hydrothermal reaction . Due to its unique interlaced heterostructure , MoS 2 /Ni 3 S 2 /NiFe-LDH/NF exhibits excellent bifunctional catalytic activity towards the urea oxidation reaction (UOR) and the hydrogen evolution reaction (HER) in 1.0 M KOH with 0.5 M urea. In a concurrent two-electrode electrolyser (MoS 2 /Ni 3 S 2 /NiFe-LDH/NF(+,-)), only voltage of 1.343 V is required to reach 50 mA cm −2 , which is 216 mV lower than for pure water splitting. Furthermore, after 16 h of urea electrolysis in 1.0 M KOH with 0.5 M urea, the current density remains at 98% of the original value. Thus, the catalyst is not only favorable for H 2 production, but also has great significance for the problem of urea-rich wastewater treatment .
研究领域:
材料科学
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能源与环境科学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Wenyu Fan,Jing Hu,Jing Li,Panpan Tao,Yinan Liu,Yuru Zhou,Yitao He
Hydrogen emerges as a promising alternative to fossil fuels owing to its environmentally friendly and renewable nature. As the global energy crisis intensifies, the development of efficient bifunctional electrocatalysts for overall water splitting becomes increasingly imperative. Herein, we present the fabrication of ReS 2 /Ni 3 S 2 heterostructure on the nickel foam (NF) substrate via a facile one-step electrodeposition approach. The study uncovered a significant synergistic effect between ReS 2 and Ni 3 S 2 , thereby obtaining excellent catalytic activity in both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The remarkable electrocatalytic activity of the ReS 2 /Ni 3 S 2 /NF catalyst is evidenced by its exceptionally low overpotentials of just 116 mV and 307 mV for HER and OER, respectively, at a current density of 10 mA cm −2 . Furthermore, this catalyst demonstrates outstanding performance in the overall water splitting process, achieving a current density of 10 mA cm −2 at a low cell voltage of only 1.71 V and the catalytic activity remains stable over an extended duration of 100 h. This discovery not only paves the way for their broader practical applications in the future but also enriches the exploration of high-performance electrocatalysts.
研究领域:
电化学
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能量转换
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材料科学
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催化
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可再生能源
✓ 已验证
产品关联
DOI
高影响因子
NANOTECHNOLOGY
·
2018
·Vol. 29
·期 24
·245402
·
IF 3.404
Dawei Zhang,Jingwei Li,Jiaxian Luo,Peiman Xu,Licheng Wei,Dan Zhou,Weiming Xu,Dingsheng Yuan
It is essential to synthesize low-cost, earth-abundant bifunctional electrocatalysts for both the hydrogen evolution reaction (HER) and oxygen evolution reactions (OER) for water electrolysis. Herein, we present a one-step sulfurization method to fabricate Ni3S2 nanowires directly grown on Ni foam (Ni3S2 NWs/Ni) as such an electrocatalyst. This synthetic strategy has several advantages including facile preparation, low cost and can even be expanded to large-scale preparation for practical applications. The as-synthesized Ni3S2 NWs/Ni exhibits a low overpotential of 81 and 317 mV to render a current density of 10 mA cm−2 for the HER and OER, respectively, in 1.0 mol l−1 KOH solution. The Ni3S2 NWs/Ni was integrated to be the cathode and the anode in the alkaline electrolyzer for overall water splitting with a current density of 10 mA cm−2 afforded at a cell voltage of 1.63 V. More importantly, this electrolyzer maintained its electrocatalytic activity even after continual water splitting for 30 h. Owing to its simple synthesis process, the earth-abundant electrocatalyst and high performance, this versatile Ni3S2 NWs/Ni electrode will become a promising electrocatalyst for water splitting.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Tianmin Zhang,Ming Xiang,Xianfeng Yang,Cheng Fu,Zhaoxiong Yan,Zhihua Xu
Metal sulfides are regarded as promising candidates for electrocatalytic applications owing to their highly conductive metal sulfide frameworks serving as the core and high-valence metal active layers functioning as the shell during the electrooxidation process. However, the catalytic ability of a single metal sulfide still needs to be optimized. Herein, a straightforward hydrothermal sulfidation approach was employed to fabricate a uniquely structured electrode composed of Ni3S2–Co9S8 heterojunction embedded in interconnected cobalt layered double hydroxide nanosheets grown on nickel foam (NF) (Ni3S2–Co9S8/Co LDH/NF). The Ni3S2–Co9S8/Co LDH/NF electrode demonstrated a low overpotential (240 mV at 10 mA cm–2) and a small Tafel slope (35.1 mV/dec) in the oxygen evolution reaction (OER). Furthermore, it exhibited a small Tafel slope (15.5 mV/dec) in the 5-hydroxymethylfurfural (HMF) oxidation reaction, achieving nearly 100% conversion of HMF and an approximately 86% yield of 2,5-furandicarboxylic acid (FDCA). The synthesis of Co LDH nanostructure on nickel foam facilitated the dispersion of the Ni3S2–Co9S8 heterojunction, thereby exposing more active sites and enhancing the mass transfer. Additionally, experimental results revealed that the electronic interactions at interfaces enabled precise adjustment of the electronic structure while promoting the formation of high-valence nickel species. Electrochemical measurements verified that the multiphase composite structure fabricated by interface engineering effectively reduced the interfacial impedances and charge transfer resistances, which in turn improved electrocatalytic performances for the OER and HMF oxidation reaction. This research provides a method for constructing a structure-optimized metal sulfide-based electrocatalyst, which can efficiently drive both the OER and oxidative HMF valorization.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2023
·
IF 7.4
Jie Yu,Zhuoran Hou,Huayu Zhang,Xinsheng Zhou
The fabrication of electrode materials with a high specific capacitance is essential for the development of enhanced performance supercapacitors. A novel binder-free electrode material, composed of MnS/Ni 3 S 2 and Co(OH) 2 , was synthesized on nickel foam by hydrothermal, sulfuration, and electrodeposition techniques. The MnS/Ni 3 S 2 exhibited a unique flower-like structure, resulting in a high specific capacitance of 1780 F g −1 at 1 A/g. By optimizing the synthesis conditions through several characterization and electrochemical tests, the MnS/Ni 3 S 2 @Co(OH) 2 composite was obtained, which displayed an ultrahigh specific capacitance of 2495 F g −1 at 1 A/g and a capacitance retention rate of 86.1% after 5000 cycles at 10 A/g in three-electrode system. The synergistic coupling of MnS/Ni 3 S 2 and Co(OH) 2 , along with the conductive nickel foam substrate, donated towards the excellent electrochemical performance. Furthermore, the MnS/Ni 3 S 2 @Co(OH) 2 //AC asymmetric supercapacitor (ASC) device was constructed with MnS/Ni 3 S 2 @Co(OH) 2 as positive electrode, activated carbon (AC) as negative electrode and 1 M KOH solution as electrolyte, demonstrated a high energy density of 68.6 Wh kg −1 at 750 W kg −1 and excellent cycle stability with 91.2% capacitance retention after 10,000 cycles at 15 A/g. The outstanding electrochemical properties observed in both the pre-electrodeposition and post-electrodeposition samples indicate the effectiveness of reasonable design and construction of composite as a pathway for producing electrode materials with exceptional performance.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）