SOLID STATE SCIENCES
·
2023
·
IF 3.5
Guo-li Chen,Huai-yao Wang,Yong-zhi Liu,Xiao-ming Huang,Guang-ming Yin
In this paper, nanowool ball Ni 3 Se 2 , rod NiSe and multistage Ni 3 Se 2 were prepared. Multilevel Ni 3 Se 2 was doped with Fe, Co and Mo respectively to prepare composite catalysts. The prepared materials were characterized by UV, XRD, SEM-EDS and XPS . The results show that the composite catalysts with multi-level Ni 3 Se 2 and Mo have special morphology and high purity. The HER performance of the composites was tested using an electrochemical workstation, and the results show that at a current density of 10 mA cm −2 , the overpotentials of Ni 3 Se 2 , Ni 3 Se 2 /Fe, Ni 3 Se 2 /Co and Ni 3 Se 2 /Mo are 71, 71, 3 and 37 mV, respectively; At a current density of 100 mA cm −2 , their overpotentials are 396.9, 373.6, 321.8 and 290.1 mV, respectively. Their Tafel slopes are 227, 169, 145 and 137 mV dec −1 , respectively. The R ct s of Ni 3 Se 2 , Ni 3 Se 2 /Fe, Ni 3 Se 2 /Co and Ni 3 Se 2 /Mo are 1.63, 1.47, 1.15 and 0.90Ω, respectively. After the comparison of the electrochemical HER performance, it is found that the Ni 3 Se 2 /Mo composite catalyst has good HER performance.
研究领域:
材料科学
·
电化学
✓ 已验证
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Jin Hu,Shengli Zhu,Yanqin Liang,Shuilin Wu,Zhaoyang Li,Shuiyuan Luo,Zhenduo Cui
Low-cost, highly active and earth-abundant bifunctional electrocatalyst is very important for the large-scale hydrogen production by water splitting. In the present work, we report a novel two-step method to fabricate three-dimensional (3D) porous catalyst for water splitting. The Ni 3 Se 2 nanowires are in-situ formed on Ni foam (NF) by simple hydrothermal method , subsequently NiFe layered double hydroxid (NiFe-LDH) nanosheets vertically grow on the nanowires to form core-shell structure. The as-formed Ni 3 Se 2 @NiFe-LDH/NF catalyst shows 3D porous structure, which can provide large specific surface area and effective substance transfers. The tight bonding between Ni 3 Se 2 nanowires and NiFe-LDH nanosheets ensures good electron transfer . The Ni 3 Se 2 @NiFe-LDH/NF catalyst exhibits outstanding electrocatalytic property for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in an alkaline medium. The overpotentianls for HER and OER at the current density of 10 mA cm −2 in 1 M KOH are 68 mV and 222 mV, respectively. For overall water splitting, a small cell voltage of 1.55 V can achieve a current density of 10 mA cm −2 in 1 M KOH. This work provides a guidance for the rational design and development of heterostructure electrocatalysts for overall water splitting.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Frontiers in Energy
·
2022
·Vol. 16
·期 3
·483-491
·
IF 2.964
Liu Yuqi,Liu Yitong,Yu Yue,Liu Chengzhan,Xing Shuangxi
Since the catalytic activity of present nickel-based synthetic selenide is still to be improved, MoSe 2 -Ni 3 Se 2 was synthesized on nickel foam (NF) (MoSe 2 -Ni 3 Se 2 /NF) by introducing a molybdenum source. After the molybdenum source was introduced, the surface of the catalyst changed from a single-phase structure to a multiphase structure. The catalyst surface with enriched active sites and the synergistic effect of MoSe 2 and Ni 3 Se 2 together enhance the hydrogen evolution reactions (HER), the oxygen evolution reactions (OER), and electrocatalytic total water splitting activity of the catalyst. The overpotential of the MoSe 2 -Ni 3 Se 2 /NF electrocatalyst is only 259 mV and 395 mV at a current density of 100 mA/cm 2 for HER and OER, respectively. MoSe 2 -Ni 3 Se 2 /NF with a two-electrode system attains a current density of 10 mA/cm 2 at 1.60 V. In addition, the overpotential of HER and OER of MoSe 2 -Ni 3 Se 2 /NF within 80000 s and the decomposition voltage of electrocatalytic total water decomposition hardly changed, showing an extremely strong stability. The improvement of MoSe 2 -Ni 3 Se 2 /NF catalytic activity is attributed to the establishment of the multi-phase structure and the optimized inoculation of the multi-component and multi-interface.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 8
·期 2
·797-809
·
IF 10.733
Yanxia Liu,Qiuchen Xu,Ran Wang,Yiteng Zheng,Lianjie Zhu,Zhen Wang,Wenjun Zheng
The development of three-dimensional (3D) hierarchical mesoporous architectures comprising two-dimensional (2D) thin nanosheets to improve the electrochemical performance of asymmetric supercapacitors (ASCs) is of great significance. Herein, we report a simple ionothermal strategy that uses an ionic liquid (1-butyl-3-methylimidazolium chloride) as the solvent to synthesize a Ni3Se2 3D hierarchical mesoporous nanosheet network (HMNN) in two stages: the formation a one-dimensional (1D) NiSe-nanorod framework and its subsequent transformation to the Ni3Se2 3D HMNN. The as-synthesized Ni3Se2 3D HMNN with a large specific surface area and a well-developed mesoporous structure can provide more active sites for redox reactions and promote electrolytic penetration and charge transfer, thereby achieving excellent electrochemical performance. The Ni3Se2 3D HMNN exhibits a high specific capacitance of 801 F g−1 at 3 A g−1 and superior cycling stability (retaining 80.2% of its specific capacitance after 10 000 cycles at 10 A g−1). Furthermore, the Ni3Se2 3D HMNN-based ASC exhibits a high energy density of 38.4 W h kg−1 at a power density of 794.5 W kg−1 and outstanding cycling stability (retaining 71.4% of its specific capacitance after 10 000 cycles at 2 A g−1). Impressively, two such ASC devices connected in series can light up an LED for ∼50 min, suggesting their great potential in high-performance ASCs.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2020
·
IF 6.155
Licheng Zhao,Ping Zhang,Yanan Zhang,Zhi Zhang,Lei Yang,Zhi-Gang Chen
Rational design has been widely used to develop high-performance metal selenides-based electrode materials for supercapacitors . In this study, we develop a facile one-step solvothermal approach to synthesize binder-free Ni 3 Se 2 nanodendrite arrays grown on nickel foam as advanced positive electrodes for supercapacitors . Our Ni 3 Se 2 nanodendrite arrays on nickel foam exhibit a specific capacitance of 1234 F g −1 (3.70 F cm −2 ) at a current density of 1 A g −1 and a great rate capability, which is benefited from the excellent electrical conductivity and unique hierarchical nano-dendritic structure. Furthermore, an asymmetric supercapacitor device was assembled using activated carbon as the negative electrode and the Ni 3 Se 2 nanodendrite arrays on nickel foam as the positive electrode, obtaining a high energy density of 22.3 W h kg −1 at a power density of 160.4 W kg −1 .
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2017
·Vol. 29
·期 6
·4649-4657
·
IF 2.019
Jiang Si,Wu Jihuai,Ye Beirong,Fan Yueyue,Ge Jinhua,Guo Qiyao,Huang Miaoliang
We present a facile one-step hydrothermal method to in situ grow nickel selenide (Ni 3 Se 2 ) nanosheets on nickel (Ni) foam (Ni 3 Se 2 /Ni) by using SeO 2 as selenide source, Ni foam as nickel source and NaBH 4 as reducing agent. The mole ratio of NaBH 4 /SeO 2 is optimized as 4:1. An asymmetric supercapacitor (ASC) is fabricated by using as synthesized Ni 3 Se 2 /Ni as positive electrode and activated carbon (AC) as negative electrode. The synthesized materials and assembled devices are measured and characterized by a field emission scanning electron microscopy, powder X-ray diffraction, cyclic voltammetry, galvanostatic charge–discharge, and electrochemical impedance spectroscopy. The results shows that the as-synthesized Ni 3 Se 2 /Ni electrode possesses a high specific capacitance of 854 F g −1 at 1 A g −1 . The ASC can steadily operate with a high voltage of 1.6 V in 3 M KOH electrolytes, and possesses a superior energy density of 23.3 W h kg −1 at a power density of 398.1 W kg −1 . In addition, the Ni 3 Se 2 //AC ASC shows excellent charge/discharge stability, after 5000 cycles the capacitance retention reaches 91.11%. The excellent performance of Ni 3 Se 2 /Ni electrode is mainly due to the pseudo-capacitive by Ni 3 Se 2 and the 3D structure of Ni foam.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2026
·
IF 3.3
Xinrui Bai,Xinlan Guo,Xiang Wu
Developing cost-effective and robust non-noble metal bifunctional electrocatalysts is critical for sustainable hydrogen production via electrochemical water splitting. However, the practical application is often restricted by the sluggish kinetics and high energy barriers of both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Herein, we synthesize highly efficient and stable Ni3S2@Ni3Se2 catalysts with rod-shaped structure through a two-step hydrothermal route. Benefiting from the synergistic effect of the composite structure, the optimal Ni3S2@Ni3Se2-3 samples present the overpotential of 248 mV @ 50 mA cm-2 for oxygen evolution reaction (OER) and 91 mV @ 10 mA cm-2 for hydrogen evolution reaction (HER). Meanwhile, the two-electrode system shows a voltage of 1.58 V at 50 mA cm-2. Our work provides a feasible strategy to design other non-noble metal catalysts with high catalytic activity.
✓ 已验证
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Ning Wei,Lipeng Zhang,Kexin Li,Yanyan Xu,Fan Zhao,Yaqiu Sun
Developing cost-effective, efficient, and durable oxygen evolution reaction (OER) electrocatalysts is essential for advancing water splitting to produce clean hydrogen, enabling sustainable energy conversion while reducing reliance on noble metals. Herein, we present a feasible approach for synthesizing a trimetallic selenide catalyst Ni 3 Se 2 @CoSe 2 @FeSe (Ni–CoFe–Se) with ultra-thin nanosheets morphology via the facile selenization of NiCoFe Prussian blue analogues (PBAs) to enhance the OER performance. By leveraging the synergistic interactions within the trimetallic selenide heterostructures and the rationally engineering rich heterointerfaces and defect, the electronic structure of Ni–CoFe–Se was optimized and high-density active sites were generated. The optimal Ni–CoFe–Se catalyst demonstrates excellent OER performance, achieving a low overpotential of 176 mV at 10 mA cm −2 in alkaline conditions, and exhibiting a low Tafel slope of 59 mV·dec −1 . The developed catalyst also possesses excellent stability and long-term durability in electrocatalytic applications. This work offers an effective strategy for designing non-noble metal catalysts through the collaborative integration of chemical composition tuning and structural engineering.
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Yanxia Wu,Hanbin Jin,Xiaoling Zhou,Lulu Guo,Qingtao Wang
Oxidizing glycerol to produce formate as a substitute for the traditional slow anodic oxygen evolution reaction is an effective strategy to enhance hydrogen production efficiency and reduce associated costs. However, the development of efficient and stable catalysts remains a significant challenge for the glycerol oxidation reaction coupled with water electrolysis. In this study, we synthesized molybdenum-doped Ni 3 Se 2 /NiSe nanomaterials supported on nickel foam using a straightforward one-step hydrothermal method. In a 1 M KOH solution, the Mo 0.2 catalyst exhibited exceptional electrocatalytic oxidation performance. Specifically, during the glycerol oxidation process, it achieved a current density of 10 mA cm −2 at a remarkably low potential of 1.20 V (vs. RHE) and demonstrated good electrochemical stability at a current density of 50 mA cm −2 . Studies indicate that the incorporation of molybdenum atoms modifies the chemical environment of nickel and selenium atoms, which not only enhances the electrocatalytic activity of the catalyst but also improves the stability of the material itself. Additionally, it facilitates the catalytic oxidation of glycerol at the anode while concurrently promoting hydrogen evolution at the cathode, resulting in the efficient simultaneous production of hydrogen and formate.
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Xuewei Ba,Xinyu Lan,Huaikang Zhang,Cheng Cheng,Wenping Huang,Xinyu Han,Deqing Zhang,Yan Yu
Transition metal compounds have garnered significant attention due to their high specific surface area, tunable composition, and synergistic effects. These materials exhibit excellent electrochemical performance, making them some of the most promising candidates for pseudocapacitive applications. Herein, cobalt selenide (CoSe), nickel selenide (NiSe), and trinickel diselenide (Ni 3 Se 2 ) nanosheets were grown on nickel foam using a simple two-step hydrothermal method. The three-dimensional network structure of the CoSe/NiSe/Ni 3 Se 2 @NF composite material provides a larger specific surface area and more electrochemically active sites. This architecture facilitates rapid electron transfer, enhances electrochemical performance, and results in a high specific capacitance of 2300.65 F· g −1 at a current density of 1 A· g −1 . The asymmetric supercapacitor device, assembled with CoSe/NiSe/Ni 3 Se 2 @NF as the positive electrode and activated carbon as the negative electrode, demonstrates an energy density of 63.16 Wh·kg −1 at a power density of 805.73 W·kg −1 . These outstanding electrochemical properties suggest that CoSe/NiSe/Ni 3 Se 2 @NF composite materials hold great potential as an energy storage material.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Yinshuang Shao,Huipeng Zhao,Ji Wang,Xiaoshuang Zhang,Xiaoqiang Du
Electrocatalytic seawater splitting for generating H 2 has become one of the most promising methods. This study prepared M-NiSe/Ni 3 Se 2 (M = Co, Fe, Cd) electrocatalysts through a one-step hydrothermal selenification reaction. In alkaline seawater, the Co–NiSe/Ni 3 Se 2 electrode requires overpotentials of 273, 369, and 431 mV to drive current densities of 10, 50, and 100 mA cm −2 for oxygen evolution reaction (OER) process, respectively. Moreover, the Co–NiSe/Ni 3 Se 2 electrocatalyst needs only potential of 1.395 V to drive a current density of 10 mA cm −2 in the urea oxidation reaction (UOR) process. According to density functional theory result, the synergistic effect between the large H 2 O adsorption capacity of Co–NiSe and the superior electrical conductivity of Ni 3 Se 2 is a key factor for contributing to the superior performance of the Co–NiSe/Ni 3 Se 2 catalyst. This study conducted systematic doping comparison experiments on the NiSe/Ni 3 Se 2 system, providing authentic and reliable experimental support for the design of selenide electrocatalysts.
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Hong-Bo Wang,Yang-Shuo Sun,Fei Ma,Liang Zhou,Hui-Feng Li,Long Zhang,Guan-Jun Chen,Yi-Ku Xu,Yong-Nan Chen,Ke-Wei Xu,Da-Yan Ma
Well-arranged heterogeneous interface is favored to enhance the electrocatalytic activities to utilize the synergistic effects of different crystalline phases. In this work, vertical aligned single crystal Ni 3 Se 2 nanowires (NWs) wrapped by ultra-thin NiSe nanoflakes (NFs) with well-arranged heterogeneous interfaces along axial direction were successfully in situ grown on nickel foam (Ni foam) by a simple one-step hydrothermal method without posttreatment. The growth of Ni 3 Se 2 NWs follows a surface reaction mechanism by which NiSe reacts with reactive Ni · atoms on surface lattice steps of Ni 3 Se 2 nucleuses to grow both along radial and axial directions. The configurations of the products can be tuned from NiSe NFs to the core-shell NWs dominated structures by solely modulating Se molarity in chemical precursors motivated by the accelerated reaction kinetics. The hydrogen evolution reaction (HER) performance was improved with the increase of Se molarity attributing to the increased coverage of high aspect Ni 3 Se 2 /NiSe core-shell NWs arrays, metallic conductive feature of Ni 3 Se 2 skeleton and well-arranged heterogeneous interfaces along the axial direction. The Ni 3 Se 2 /NiSe core-shell NWs with well-arranged heterogeneous interfaces may also be beneficial to other energy or environmental applications.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）