ACS Applied Energy Materials
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2020
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IF 4.473
Yapeng He,Panpan Zhang,Hui Huang,Xiaobo Li,Xinhua Zhai,Buming Chen,Zhongcheng Guo
The development of an efficient metal sulfide cathode is of great importance and an ongoing challenge for the practical application of an aqueous rechargeable Ni-Zn battery. Herein, Ni3S2 nanosheets with abundant sulfur vacancies (r-Ni3S2) have been successfully prepared via hydrothermal reaction and surface engineering, which are further employed as the binder-free cathode of the aqueous Ni-Zn battery. Benefitting from the features of substantially improved electrical conductivity, low band gap, abundant active sites, and good intrinsic capacity, the r-Ni3S2 electrode delivers an impressive reversible specific capacitance (1621.6 F g–1 at 0.2 A g–1) and extraordinary rate capability (62.1% retention under 8 A g–1). Moreover, the aqueous rechargeable r-Ni3S2//Zn battery exhibits a remarkable specific capacity (240.8 mAh g–1 at 1 A g–1) and preeminent cycling durability (only 8.4% decay after 3000 cycles). Besides, a glorious energy density of 419.6 Wh kg–1 together with a peak power density of 1.84 kW kg–1 could be achieved, surpassing a significant percentage of the reported Ni-Zn batteries. The results reveal that the r-Ni3S2 cathode with abundant sulfur vacancies and the adopted facile approach possesses huge promotion potential for Ni-Zn batteries and is promising to numerous electronics and electric vehicle applications in the future.
研究领域:
材料科学
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能源存储与转换
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2024
·
IF 8.1
Xiaomei Xu,Bilu Yang,Zhaodi Xu,Qiaoling Mo,Xiaomei Shen,Hu Cai
In the pursuit of advancing the production of H 2 through hydrogen-evolution reaction (HER), the demand for the elaborate design of cost-effective and robust durability electrocatalysts has gained momentum, especially replacement of noble-metal counterparts like Pt. Herein, we introduce a facile one-pot hydrothermal approach to synthesize nickel foam-supported Ni 3 S 2 nanosheet arrays, which integrate with carbon-quantum-dot (CQDs) and Cu, Mo dual-metal doped. With the introduction of CQDs and Cu, Mo dual-metal doped site, the optimal CQDs-Cu-Mo-Ni 3 S 2 @NF exhibits superior HER catalytic activity with a low overpotential of 125 mV at 10 mA·cm −2 and strong durability for 30 h in alkaline medium. The exceptional electrocatalytic performance is ascribed to the synergistic effect of CQDs and Cu, Mo dual-metal site. This synergy encompasses optimization of water molecule adsorption/desorption energetics , elevated electrical conductivity , weakening of the strong S–H bond interaction on the Ni 3 S 2 surface, and providing ample active centers. Furthermore, an in-depth understanding of the electronic structure and adsorption energy during the HER process is probed by density functional theory (DFT) analysis. Our work provides a quintessential paradigm for the rational design of multi-component electrocatalysts for water splitting.
研究领域:
材料科学
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能源化学
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产品关联
DOI
高影响因子
Particuology
·
2022
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IF 3.251
Chao Song,Yuhua Liu,Chengxiang Huang,Miao Liu,Nailin Yue,Zunhao Zhang,Zizhun Wang,Xu Zou,Wei Zhang,Weitao Zheng
Through inverted-design rather than modifying the generally-assumed S active sites in popular MoS 2 , we unlock the potential of Mo sites and successfully prepared novel MoS 2 @Ni 3 S 2 /NF core-shell nanospheres as a catalyst for the high-performance hydrogen evolution reaction (HER). The ΔG H at the Mo site is optimized via Ni 3 S 2 to achieve excellent HER activity. At low current densities, it has similar activity to the Pt/C. However, its performance is better than Pt/C at high density. Moreover, our catalyst shows a considerable stability at a variety of current densities for 50 h, promising to substitute noble metal catalysts in application of commercial alkaline electrocatalysts .
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
Journal of Environmental Sciences
·
2024
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IF 5.9
Yunjin Yao,Zhongming Tao,Hongwei Hu,Lijie Zhang,Ziwei Ma,Yaoyao Wang,Shiyang Lin,Shaobin Wang
Catalytic oxidation of organic pollutants is a well-known and effective technique for pollutant abatement. Unfortunately, this method is significantly hindered in practical applications by the low efficiency and difficult recovery of the catalysts in a powdery form. Herein, a three-dimensional (3D) framework of Fe-incorporated Ni 3 S 2 nanosheets in-situ grown on Ni foam (Fe-Ni 3 S 2 @NF) was fabricated by a facile two-step hydrothermal process and applied to trigger peroxymonosulfate (PMS) oxidation of organic compounds in water. A homogeneous growth environment enabled the uniform and scalable growth of Fe-Ni 3 S 2 nanosheets on the Ni foam. Fe-Ni 3 S 2 @NF possessed outstanding activity and durability in activating PMS, as it effectively facilitated electron transfer from organic pollutants to PMS. Fe-Ni 3 S 2 @NF initially supplied electrons to PMS, causing the catalyst to undergo oxidation, and subsequently accepted electrons from organic compounds, returning to its initial state. The introduction of Fe into the Ni 3 S 2 lattice enhanced electrical conductivity, promoting mediated electron transfer between PMS and organic compounds. The 3D conductive Ni foam provided an ideal platform for the nucleation and growth of Fe-Ni 3 S 2 , accelerating pollutant abatement due to its porous structure and high conductivity. Furthermore, its monolithic nature simplified the catalyst recycling process. A continuous flow packed-bed reactor by encapsulating Fe-Ni 3 S 2 @NF catalyst achieved complete pollutant abatement with continuous operation for 240 h, highlighting its immense potential for practical environmental remediation. This study presents a facile synthesis method for creating a novel type of monolithic catalyst with high activity and durability for decontamination through Fenton-like processes.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2020
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IF 4.939
Yun Zhou,Xigang Yang,Shengqi Xi,Bing He,Yongping Song
Alkaline solution is considered to be more suitable for industrial application of hydrogen production by water electrolysis . However, most of the low-cost electrocatalyts such as Ni 3 S 2 has poor ability to dissociate HO–H, resulting in unsatisfied hydrogen evolution performance in alkaline media . In this paper, a novel vermicular structure of Ni 3 S 2 –Ni(OH) 2 hybrid have been successfully prepared on nickel foam substrate ( v -Ni 3 S 2 –Ni(OH) 2 /NF) through a facile two-step containing hydrothermal and electrodeposition processes. The heterostructure consists of rod-like Ni 3 S 2 and Ni(OH) 2 nanosheets , in which Ni(OH) 2 is coated on the surface of Ni 3 S 2 . This structure not only constructs a fast electron transfer channel but also possesses rich heterointerface, thus accelerating the Volmer step and allowing more active sites of Ni 3 S 2 to functioning well. As a result, v -Ni 3 S 2 –Ni(OH) 2 /NF exhibited excellent electrocatalytic activity toward HER in 1.0 M KOH solution. It only needs 78 mV and 137 mV to drive current density of 10 mA cm −2 and 100 mA cm −2 . Moreover, the catalytic stability of this electrocatalyst in alkaline solution is also satisfactory.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2021
·Vol. 32
·期 12
·16866-16880
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IF 2.478
Chen Han Xiang,Gui Yang
We report a template method by rationally designing a self-supported Ni 3 S 2 nanosheet-wrapped ZnO nanorod (Ni 3 S 2 @ZnO) standing vertically on Ni foam surface. In this work, an organic molecule of 2-methylimidazole (2-MI) using as a structural director, which is commonly used in metal–organic frameworks(MOFs), has been adopted to link those Ni 3 S 2 nanosheets forming a shear-wall structure. This special morphology with multi-dimension (2D with 1D) exhibits advantages on the high capacitance of about 3546 F g −1 at a current density of 0.5 A g −1 . Besides this, Ni 3 S 2 @ZnO can deliver an extraordinarily capacitance of 1872 F g −1 even at a high current density of 25 A·g −1 , which in the meantime displayed a good capacity retention of 70.3% after 10,000 cycles. An asymmetric supercapacitor was then constructed, performing a quite stable capacitance of about 197 F g −1 at a high current density of 15 A g −1 for 5000 cycles and a sufficient energy density of 140 Wh kg −1 , which proves its potential on lighting up six red LEDs in practical usage.
研究领域:
材料科学
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能源存储
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Jing Mei,Yuqing Deng,Xiaohong Cheng,Qi Wu
This study employed a one-step hydrothermal process to synthesize Ni 3 S 2 /Fe 3 O 4 nanoblocks in situ on nickel foam (NF). The resulting Ni 3 S 2 /Fe 3 O 4 /NF catalyst demonstrates exceptional electrocatalytic activity for the oxygen evolution reaction (OER) and robust long-term stability. It achieves a low overpotential of only 220 mV for a current density of 10 mA cm −2 with a Tafel slope of 54.1 mV dec −1 and remains stable in 1.0 M KOH for 66 h. The binder-free self-supported three-dimensional nanoblocks enhance the reaction region and long-term stability. Electronic interactions between Fe 3 O 4 and Ni 3 S 2 , coupled with heterogeneous interfaces, optimize the electronic structure, fostering the formation of highly reactive species. Density-functional theory (DFT) calculations confirm that Ni 3 S 2 /Fe 3 O 4 , with a heterogeneous interfacial structure, modulates the chemisorption of reaction intermediates on the catalyst surface, optimizing the Gibbs free energies (ΔG) of oxygen-containing intermediates. The synergistic effect between the two active materials within the heterogeneous structure enhances OER catalytic performance. This finding offers a valuable approach to designing efficient and stable OER electrocatalysts .
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
APPLIED SURFACE SCIENCE
·
2017
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IF 3.387
Long Huang,Huijie Hou,Bingchuan Liu,Kemal Zeinu,Xiaolei Zhu,Xiqing Yuan,Xiulin He,Longsheng Wu,Jingping Hu,Jiakuan Yang
In this work, a hierarchical Ni 3 S 2 @MoS 2 hybrid structure was synthesized by an effective strategy with a combined hydrothermal route and subsequent annealing treatment. When tested as supercapacitor electrodes, the Ni 3 S 2 @MoS 2 composites exhibited high specific capacitance of 1418.5 F g −1 at 0.5 A g −1 , which also showed a good capacitance retention of 75.8% at 5 A g −1 after 1250 cycles. The Ni 3 S 2 @MoS 2 composites demonstrated 1.9 fold higher specific capacitance compared to the amorphous shell counterpart (Ni x S y @MoS 2 ). Furthermore, the assembled asymmetric supercapacitor (Ni 3 S 2 @MoS 2 //rGO) also demonstrated a capacitance of 61 F g −1 at 0.5 A g −1 , with energy and power densities of 21.7 Wh kg −1 at 400 W kg −1 and 12 Wh kg −1 at 2400 W kg −1 under an operating window of 1.6 V. The asymmetric supercapacitor also showed a favorable cycle stability with 72% capacity retention over 4000 cycles at 10 A g −1 . The improved electrochemical performance is attributed to the synergetic effect of the large accessible surface area and optimal contacts between the MoS 2 and the electrolyte, as well as high capacitance of the metallic Ni 3 S 2 core.
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
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Xiaomin Lang,Juan Huang,Mochou Zhang,Zitao Liu,Chunmei Li,Jianfeng Tang,Qing Li,Hua Lin
Building Mott-Schottky heterojunctions can effectively enhance the activity of catalysts, but it faces challenges such as energy band matching, interface contact quality, and charge transfer efficiency. This study utilizes Ni 3 S 2 as a self-supporting template to construct CoFeLDH/Ni 3 S 2 /NF with a Mott-Schottky heterojunction, which exhibits excellent bifunctional catalytic activity and stability, achieving overpotentials of 227 mV and 107 mV for 10 mA cm -2 in OER and MOR, respectively. The research indicates that the robust Mott-Schottky interaction established between the metallic Ni 3 S 2 and the semiconductor CoFeLDH promotes spontaneous electron transfer and regulates the adsorption/desorption of intermediates; the Ni 3 S 2 nanosheet array morphology provides a low-resistance pathway for charge and mass transfer, while the small nanosheets of CoFeLDH combined with Ni 3 S 2 enhance the exposure of active sites, further increasing the reaction rate. This strategy can be extended to other semiconductor materials, as demonstrated by the constructed NiFeLDH/Ni 3 S 2 /NF and NiCoLDH/Ni 3 S 2 /NF, which also exhibit good catalytic performance. This study proposes a universal method for constructing efficient Mott-Schottky electrocatalysts, highlighting their practical application potential.
研究领域:
材料科学
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电化学
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催化科学
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产品关联
DOI
高影响因子
ChemElectroChem
·
2018
·Vol. 5
·期 17
·2376-2382
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IF 4.446
Gang Yuan,Xiaopo Niu,Zhichao Chen,Li Wang,Xiangwen Zhang,Qingfa Wang
Graphical Ni 3 S 2 acts as a noble catalyst : A 3D porous, defect rich, and self-supported Ni 3 S 2 @Ni foam with core-shell structure is fabricated as electrocatalyst for methanol fuel cells. The electrocatalyst shows Pt-like activity, high poison tolerance, and long-term stability towards methanol oxidation in alkaline media. Direct methanol fuel cells are promising renewable energy devices for automobiles and portable electronic devices. The development of high effciency, poison tolerance, long-term stability, and noble metal-free electrocatalysts for methanol oxidation is still a major challenge. Herein, we develop a noble metal-free, 3D self-supported, defect-rich, hierarchical shell-core structured Ni 3 S 2 composite on Ni foam as electrocatalyst. This electrocatalyst shows a good activity, poison tolerance, and long-term durability towards methanol oxidation in alkaline media. It shows the lowest onset potential (−340 mV vs. Hg/HgO) among all the Ni-based catalysts reported up to date and a Pt-level specific activity. The methanol oxidation peak current of the electrocatalyst retains more than 97.5 % even after 5,000 voltammetry cycles in 0.5 M KOH+1 M CH 3 OH. The morphology and composition of the electrocatalysts before and after stability test were characterized by SEM, TEM, XRD, and XPS. The high activity, poison tolerance, and stability are attributed to the binder-free, directly grown Ni 3 S 2 shell on the Ni foam backbone, the lattice defect sites, and the synergetic effects between the in-situ formed active NiO x core and Ni 3 S 2 shell during methanol oxidation. This work indicates that the self-supported hierarchical shell-core Ni 3 S 2 @Ni foam electrocatalyst is a viable alternative for commercial Pt-based electrocatalyst applied in fuel cells.
研究领域:
材料科学
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能源化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2025
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IF 9.8
Xiaoyan Zhou,Liqin Li,Huanxiu Zou,Huichuan Tang,Aojie Li,Enxiang Liang,Hong Yin,Liang Chen,Zhaohui Hou,Wei Wang
Transition metal sulfides have shown promise for high lithium storage capacities, but their conductivity and volume effects have limited their potential as anodes for lithium-ion batteries (LIBs). This study focused on structural design and developed Fe-doped Ni 3 S 2 nanocrystals embedded in porous carbon composites with a unique root-whisker-like structure. The porous and root-whisker morphology accelerated ion diffusion rates and reduced charge-transfer resistance, improving electrochemical reaction kinetics. The material exhibits a high capacitance-controlled capacity contribution of up to 90.19 %. Additionally, Distribution of Relaxation Times analysis confirms a faster electrochemical response. The strategy proposed in this work provides valuable guidance for designing carbon-based composite anodes for LIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2020
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IF 4.65
Weiji Dai,Kai Ren,Yin-an Zhu,Ye Pan,Jin Yu,Tao Lu
Efficient electrocatalysts based on earth-abundant elements are urgently required for promoting the efficiency of electrochemical water splitting. In this work, heterostructures of CoNi 2 S 4 /Ni 3 S 2 on nickel foam (CoNi 2 S 4 /Ni 3 S 2 @NF) are synthesized by a facile one-step hydrothermal method as promising bifunctional electrocatalysts. To achieve an electrocatalytic current density of 10 mA cm −2 in 1 M KOH solution, the CoNi 2 S 4 /Ni 3 S 2 @NF electrode requires overpotential as low as 171 mV and 243 mV for HER and OER , respectively. Furthermore, the overall water splitting device with CoNi 2 S 4 /Ni 3 S 2 @NF electrode as both cathode and anode requires 1.65 V to offer current density of 10 mA cm −2 . Density functional theory calculations reveal that the strong coupling interactions between CoNi 2 S 4 and Ni 3 S 2 synergistically optimized the electronic structure, thus enhancing the electrochemical water splitting performances. Surfaces oxidation of CoNi 2 S 4 /Ni 3 S 2 @NF electrode is considered to hinder the electrochemical activities for OER. The present work not only provides a promising bifunctional electrocatalyst for water splitting but also expands the applications of CoNi 2 S 4 based materials.
研究领域:
材料科学
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电化学
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能源化学
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纳米催化
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可持续能源
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）