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
ChemElectroChem
·
2015
·Vol. 2
·期 12
·1903-1907
·
IF 0
Chun Tang,Zonghua Pu,Qian Liu,Abdullah M. Asiri,Xuping Sun,Yonglan Luo,Yuquan He
We report on the facile one-step hydrothermal preparation of a NiSe nanowire film on nickel foam (NiSe/NF) as a novel binder-free electrode material for supercapacitors. This electrode delivers a high specific capacitance of 1790 F g −1 and an areal capacitance of 5.01 F cm −2 at a current density of 5 A g −1 . Graphical Play NiSe : A NiSe nanowire film that is grown in situ on nickel foam (NiSe/NF) behaves as a binder-free electrode material for supercapacitors, delivering a high specific capacitance of 1790 F g −1 and an areal capacitance of 5.01 F cm −2 at a current density of 5 A g −1 .
研究领域:
材料科学
·
电化学
·
储能
✓ 已验证
DOI
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
ChemElectroChem
·
2022
·Vol. 9
·期 2
·e202101523
·
IF 4.782
Junye Zhang,Hao Guo,Fan Yang,Mingyue Wang,Tingting Zhang,Hao Zhang,Wu Yang
Graphical Ni-MOF derived CMs@Ni(OH) 2 /NiSe with a core-shell structure was designed. The obtained core-shell nanostructure material possesses a high contact area, excellent synergistic effect and can provide more reactive active sites. The application of Ni-MOF in supercapacitors has received widespread attention, but its poor conductivity and bad stability hinder its application. Therefore, Ni-MOF derived CMs@Ni(OH) 2 /NiSe with a core-shell structure was designed. Here, carbon microspheres (CMs) were explored as the conductive substrate to enhance the stability and in situ prepared Ni-MOF was anchored on the surface of CMs. Then, alkali-treatment and selenylation were carried out on CMs@Ni−MOF to improve stability and conductivity. The obtained core-shell nanostructure material possesses a high contact area, excellent synergistic effect and can provide more reactive active sites. The prepared CMs@Ni(OH) 2 /NiSe shows a higher specific capacitance (2106 F g −1 ) and excellent cycling performance with a capacitance retention of 95 % after 30000 cycles. Furthermore, the assembled CMs@Ni(OH) 2 /NiSe//AC device delivers a high energy density of 70.84 Wh kg −1 at the power density of 756.8 W kg −1 and maintains 100 % of the initial capacitance after 40000 cycles.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Jueshuo Fan,Lisha Shen,Chenglin Zhao,Zhida Wang,Zhiming Tu,Jiaxuan Hu,Changfeng Yan
With the growing global demand for clean energy, water electrolysis for hydrogen production is seen as an efficient method for generating clean energy. The interface between two phases possesses special catalytic activity due to large lattice mismatches and strain concentration. It's a challenge to precisely tailor the multiphase interfaces of catalysts. Herein, the phase interface of NiSe–NiSe 2 was precisely controlled through a hydrothermal method. NiSe 2 crystals are uniformly distributed on NiSe nanosheets and form heterojunction structures. This uniformly distributed interfaces significantly improve the catalyst's Hydrogen evolution reaction (HER) performance, achieving an overpotential of only 32 mV and a Tafel slope of 39.83 mV dec −1 at 10 mA cm −2 in 1 M KOH. The dual-phase interface induces electronic reconfiguration and the elevated d-band center of Ni, resulting in selective adsorption of H∗ and non-adsorption of H 2 O and OH − at the interface, which facilitates H∗ adsorption and H 2 desorption, thereby creating numerous rapid hydrogen evolution channels. Additionally, an anion exchange membrane water electrolyzer was assembled using NiSe–NiSe 2 as the cathode, which achieved a current density of 1 A cm −2 at 1.92 V in a 1 M KOH solution. This approach of introducing a special hydrogen evolution interface through composite dual-phase structures is promising for future low-energy, high-efficiency water electrolysis for hydrogen production.
研究领域:
材料科学
·
能源化学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yuyan Tang,Tingting Fan,Arslan Hameed,Yuanhang Ma,Wenxiang Sheng,Yawei Li,Ping Chen,Peng Li
To address the escalating global energy demand and advance sustainable hydrogen production, we report the rational design of a carbon-encapsulated La-doped Ni 2 P/NiSe heterojunction electrocatalyst on nickel foam (La-Ni 2 P/NiSe@C/NF) via synergistic La doping and interface engineering for enhanced urea oxidation reaction (UOR). La induces porous, wrinkled nanosheets, boosting surface area (11.89 m 2 g -1 ), enhancing active site exposure. The Ni 2 P/NiSe heterointerfaces generate built-in electric fields that accelerate interfacial charge transport. XPS, EXAFS, and in situ Raman confirm La doping modulates Ni 3+ electronic structure, thereby shifting the Ni²⁺/Ni³⁺ redox transition to lower potentials, thereby shifting the Ni 2+ /Ni 3+ redox transition to lower potentials. The La-Ni 2 P/NiSe@C/NF exhibits excellent UOR activity in an alkaline electrolyte, delivering a current density of 10 mA cm -2 at 1.296 V (vs. RHE). Remarkably, it achieves a low Tafel slope of 32.73 ± 0.73 mV dec -1 . These performance metrics surpass both control samples and state of the art benchmark materials. Moreover, a two-electrode electrolyzer assembled with La-Ni 2 P/NiSe@C/NF||Pt/C/NF exhibits exceptional 250 h stability at 50 mA cm -2 , underscoring the efficacy of rare-earth doping and heterointerface engineering for high-performance UOR.
研究领域:
电催化
·
材料科学
·
能量转换
·
可持续能源
·
纳米材料
·
界面工程
·
稀土掺杂
✓ 已验证
产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2021
·
IF 7.963
Ying Yan,Wenlei Wang,Yi Peng,Kehui Xue,Jing Wang,Hongbo Xiao
Biochar has been widely used in the removal of heavy metals from wastewater due to its obligate adsorption properties. The reutilization of exhausted biochar has become a challenge for chemical researchers. In this study, diazotization-modified biochar adsorbing Ni 2+ was used as a precursor to prepare heterogeneous NiS/NiSe/3D porous biochar (DAC-Ni/NiS/NiSe) using vulcanization followed by in situ competitive hydrogen reduction. The composites exhibited excellent performance in As(III) removal from water via both adsorption and photocatalysis processes, removing 100% of 10 mg/L As(III) within 110 min with 20 mg catalyst, and 90% removal rate was maintained even after five recyclability runs. The influencing factors of As(III) oxidation in reactive DAC-Ni/NiS/NiSe suspensions were also investigated. The photocatalytic oxidation efficiency of As(III) was susceptible to initial pH. The coexisting species of PO 4 3− and CO 3 2− exhibited obvious suppression on the total As removal, while the presence of Cl − and NO 3 − exhibited no obvious effect on the oxidation efficiency of As. This study provides a feasible and simple strategy for reclaiming waste biochar after adsorbing nickel to prepare energy-intensive materials and implies the possibility and necessity of biowaste applications for environmental remediation.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CARBON
·
2018
·
IF 7.082
Changhai Liu,Ke Wang,Xuerui Zheng,Xiaocun Liu,Qian Liang,Zhidong Chen
The development of hydrogen evolution catalysts from earth-abundant elements with highly active and stable activity are crucial for the promotion of more energy and cost-efficient hydrogen production . Herein, a facile one-step hydrothermal approach is proposed to fabricate 3D hierarchical microcages composed of MoSe 2 -NiSe@carbon nanosheets for the efficient electro-catalytic hydrogen evolution reaction (HER) by water hydrolysis. The heterostrucutres were characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy , scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. The nanohybrids of MoSe 2 -NiSe are constructed by in situ combination of hexagonal NiSe and MoSe 2 , where the high quality vertical heterostructure can benefit the electrons transfer from metallic NiSe to the MoSe 2 matrix, accomplishing the electronic modulation of MoSe 2 -NiSe@carbon catalysts for robust electrocatalytic performance. The optimal MoSe 2 -NiSe@carbon exhibits excellent HER catalytic performance and superior durability in both acidic and alkaline medium .
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 41
·17990-17997
·
IF 2.7
Biaobiao Lu,Yaoxia Yang,Yu Zhang,RuiRui Zhang,Fuxing Zhou,Qingtao Wang,Wei Zeng,Dongfei Sun
The exploration of clean, environmentally friendly, efficient and economical metal electrocatalysts is becoming more and more in-depth, but catalyst activity and stability are still the main goals. Herein, a thin regular pentagonal rough nanosheet array (La-CoNiOOH@FeSe@NiSe/NF) grown on a three-dimensional porous conductive surface was designed and synthesized. The prepared electrode material exhibited good catalytic activity in 1 M KOH solution, required only 270 mV of overpotential to provide 10 mA cm−2 current density for the oxygen evolution reaction (OER), and showed excellent stability for at least 90 hours during the OER process. The characterization test results proved that the incorporation of La changed the surface electronic structure, optimized the interface, modulated the active site on the surface of the material, and exposed a large number of active sites, thus improving the activity and stability of the catalyst material. At the same time, such a rough surface also gives the material excellent wettability and anti-bubble adhesion, which is also a key factor in maintaining the catalytic activity and OER stability of the material. This method provides a new idea for developing an efficient and economical electrolytic hydroelectricity catalyst.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2024
·Vol. 12
·期 1
·179-190
·
IF 6.1
Weiwei Han,Wenyi Wang,Jiahong Liao,Yi He,Xingwang Zhang,Chunlin Yu
Sustainable hydrogen production by electrocatalytic water splitting is a promising energy storage technology yet challenging due to the sluggish kinetics of the oxygen evolution reaction (OER). Rationally designed robust and high-efficiency non-noble metal electrocatalysts for large-current-density OER are highly desirable for industrial-grade hydrogen production. Herein, a unique hierarchical heterostructure electrocatalyst composed of FeCo layered double hydroxide nanosheets and a NiSe nanowire array grown on Ni foam (FeCo LDH/NiSe@NF) is demonstrated. The optimized FeCo LDH/NiSe@NF exhibits an excellent OER activity with low overpotentials of 230, 266 and 298 mV at current densities of 100, 500 and 1000 mA cm−2 in an alkaline solution. In particular, it can deliver 1000 mA cm−2 without much decay after the long-term stability test for 100 h. Both the experimental results and theoretical calculations reveal that reasonable construction of a hierarchical heterostructure, as well as the strong interaction at the heterointerface between NiSe and FeCo LDH can not only offer sufficient exposure of the surface active sites, better electrochemical conductivity and structural stability, but also effectively optimize electronic configurations and lower the reaction energy barriers, consequently facilitating the reaction kinetics especially in large-current-density alkaline water electrolysis. Moreover, a two-electrode electrolyzer using FeCo LDH/NiSe@NF and NiCoP/NiCoSx@NF as the anode and cathode only needs a cell voltage of 1.849 V to reach 1000 mA cm−2 in 30 wt% KOH solution at 80 °C. The high catalytic activity and long-term stability of the catalyst at large current densities have exceeded most electrocatalysts reported, highlighting its great potential in large-scale applications.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Danyang He,Liyun Cao,Yixuan Huang,Guodong Li,Yongqiang Feng,Yajuan Zhao,Xiaoyi Li,Dongming Li,Liangliang Feng
Tailoring the nonprecious nickel selenide heterogeneous electrocatalysts with controllable morphology and electronic structures is of prime importance to enhance the catalytic efficiency for hydrogen production evolution (HER). Here, we report the solvothermal in-situ synthesis of vanadium-incorporated NiSe/Ni 3 Se 2 heterogeneous structures (VNS) on porous nickel foam, which function as an efficient electrode toward HER, together with superior catalytic activity and durability. Impressively, the self-assembled VNS electrode delivers the current densities of 100, 500 and 1000 mA cm −2 at quite low overpotentials of 175, 275 and 348 mV with 85% iR -compensation toward HER in 1.0 M KOH solution. Mott-Schottky analysis indicates that the vanadium doping alters the flat band potential of VNS, and in turn affects the electrons migration behavior at electrode and electrolyte interface. Benefiting from its dramatically increased catalytic active sites exposure, enhanced charge transport capability, and optimized electronic structure, the hierarchical VNS heterostructures exhibit an impressive HER electrocatalytic performance in alkaline media. More broadly, this research provides a promising strategy for design and exploitation of more advanced electrocatalysts for large-scale hydrogen production on selenides using heteroatom vanadium incorporation.
研究领域:
材料科学
·
电化学
·
可再生能源
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2017
·Vol. 5
·期 28
·14639-14645
·
IF 8.867
Qiang Zhao,Dazhong Zhong,Lin Liu,Dandan Li,Genyan Hao,Jinping Li
Electrochemical hydrogen production through water splitting is one of the most promising methods for the storage and utilization of renewable energy. However, it is hindered by the sluggish oxygen evolution reaction (OER). Therefore, there is an urgent need to develop an efficient and robust OER catalyst through a simple and low-cost method. Herein, we report the in situ fabrication of amorphous Fe–NiSe/NF without a polymeric binder as a three-dimensional (3D) nanowire electrode for efficient water oxidation. It shows good durability in 1 M KOH. This catalyst requires overpotentials of only 233 and 275 mV to drive current densities of 10 and 100 mA cm−2, and it shows a low Tafel slope of 48 mV dec−1. The faradaic efficiency of Fe–NiSe/NF for oxygen evolution was determined to be close to 96.8%.
研究领域:
材料科学
·
电化学
·
可再生能源
✓ 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）