Nanoscale
·
2021
·Vol. 13
·期 42
·17846-17853
·
IF 7.79
Ting Li,Qing Zhang,Xiao Hu Wang,Juan Luo,Li Shen,Hong Chuan Fu,Fei Gu,Nian Bing Li,Hong Qun Luo
Electrochemical water splitting is widely studied in the hope of solving environmental deterioration and energy shortage. The design of inexpensive metal catalysts exhibiting desired catalytic performance and durable stability for efficient oxygen evolution is the pursuit of sustainable and clean energy fields. Herein, a three-dimensional (3D) flower-like NiSe2 primary structure, modified with highly dispersed CuSe2 nanoclusters as the secondary structure, is obtained by regulating the growth trend of the nanosheets. Benefiting from the metallicity of selenides and the formation of a heterogeneous interface, NiSe2@CuSe2/NF shows comparable performance toward the oxygen evolution reaction (OER) in an alkaline environment. Upon regulating the synthesis conditions, the catalyst exhibits its optimal performance with ultralow overpotential for the OER when the Ni/Cu molar ratio is 1 : 0.2 and the hydrothermal temperature and hydrothermal time are 200 °C and 6 h, respectively. It provides a current density of 10 mA cm−2 when a potential of 201 mV is applied without iR compensation. In this work, the hierarchical heterostructures of NiSe2 and CuSe2 are synthesized, which exhibit high electrocatalytic activity towards the oxygen evolution reaction and provides a new possibility for the extensive application of copper-based compounds in advanced energy fields.
研究领域:
材料科学
·
能源化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2024
·
IF 13
Beirong Ye,Yuefei Zhang,Chen Li,Tengfei Zhang,Yongqi Li,Ting Li,Fengyu Huang,Chong Tang,Renhong Chen,Tao Tang,Abolhassan Noori,Liujiang Zhou,Xinhui Xia,Mir F. Mousavi,Yongqi Zhang
NiFe-based nanomaterials are extensively studied as one of the promising candidates for the oxygen evolution reaction (OER). However, their practical application is still largely impeded by the unsatisfied activity and poor durability caused by the severe leaching of active species. Herein, a rapid and facile combustion method is developed to synthesize the vertical graphene (VG) supported N-doped carbon modified (Ni x Fe 1-x )Se composites (NC@(Ni x Fe 1-x )Se/VG). The interconnected heterostructure of obtained materials plays a vital role in boosting the catalytic performance, offering rich active sites and convenient pathways for rapid electron and ion transport. The incorporation of Se into NiFe facilitates the formation of active species via in situ surface reconstruction. According to density functional theory (DFT) calculations, the in situ formation of a Ni 0.75 Fe 0.25 Se/Ni 0.75 Fe 0.25 OOH layer significantly enhances the catalytic activity of NC@(Ni x Fe 1-x )Se/VG. Furthermore, the surface-adsorbed selenoxide species contribute to the stabilization of the catalytic active phase and increase the overall stability. The obtained NC@(Ni x Fe 1-x )Se/VG exhibits a low overpotential of 220 mV at 20 mA cm −2 and long-term stability over 300 h. This work offers a novel perspective on the design and fabrication of OER electrocatalysts with high activity and stability.
研究领域:
材料科学
·
电化学
✓ 已验证
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
·
2025
·Vol. 49
·期 24
·10261-10267
·
IF 2.5
Fangyuan Fan,Chunlin Teng,Rongjin Zhu,Lina Zhu,Lingfei Xu,Yeshuang Du
Electrochemical water-splitting is a potential “green” approach to produce a large amount of hydrogen. However, its half reaction, the oxygen evolution reaction (OER), suffers sluggish dynamics and huge overpotential. This encumbers the energy conversion efficiency from electric energy to hydrogen energy, resulting in cost increases. Besides, rare metal catalysts such as RuO2 and IrO2 have high OER catalytic activity but they are low in reserve and expensive. Hence, exploration of highly efficient, stable and cheap transition metal-based electrocatalysts to speed up the OER rate is a rational approach. Herein, S-doped NiFe2O4@NiSe2 nanospheres supported on nickel foam were synthesized through a simple one-pot hydrothermal method. Thanks to the unique structure, large surface area, numerous active sites, incorporation of S-anion atoms and synergistic effect between different components, S-doped NiFe2O4@NiSe2 nanospheres showed extraordinarily efficient electrocatalytic activity towards the OER in alkaline medium. When the current density was 10 mA cm−2, the OER overpotential was 190 mV. Meanwhile, it exhibited excellent long-term stability and was maintained at 10 mA cm−2 for ≥94 h in a chronopotentiometry test.
研究领域:
材料科学
·
电化学
·
能源转换
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale Research Letters
·
2020
·Vol. 15
·期 1
·1-10
·
IF 3.578
Wu Pengyuan,Sun Gangyong,Chen Yuanzhi,Xu Wanjie,Zheng Hongfei,Xu Jin,Wang Laisen,Peng Dong-Liang
Combining MoSe 2 with other transition metal dichalcogenides to form a hybrid nanostructure is an effective route to enhance the electrocatalytic activities for hydrogen evolution reaction (HER). In this study, MoSe 2 -Ni 3 Se 4 hybrid nanoelectrocatalysts with a flower-like morphology are synthesized by a seed-induced solution approach. Instead of independently nucleating to form separate nanocrystals, the Ni 3 Se 4 component tends to nucleate and grow on the surfaces of ultrathin nanoflakes of MoSe 2 to form a hybrid nanostructure. MoSe 2 –Ni 3 Se 4 hybrid nanoelectrocatalysts with different Mo:Ni ratios are prepared and their HER catalytic activities are compared. The results show that the HER activities are affected by the Mo:Ni ratios. In comparison with pure MoSe 2 , the MoSe 2 -Ni 3 Se 4 hybrid nanoelectrocatalysts having a Mo:Ni molar ratio of 2:1 exhibit enhanced HER properties with an overpotential of 203 mV at 10 mA/cm 2 and a Tafel slope of 57 mV per decade. Improved conductivity and increased turnover frequencies (TOFs) are also observed for the MoSe 2 -Ni 3 Se 4 hybrid samples.
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
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2019
·
IF 14.229
Caichi Liu,Tao Gong,Jun Zhang,Xuerong Zheng,Jing Mao,Hui Liu,Ying Li,Qiuyan Hao
Developing earth-abundant transition-metal phosphides electrocatalysts with high activity and good durability toward alkaline hydrogen evolution reaction (HER) is crucial for sustainable hydrogen energy economy. However, their intrinsic activity is limited by the inadequate hydrogen adsorption energy. Herein, we reported a novel self-supported heterostructure catalyst in the form of Ni 2 P-NiSe 2 , which is obtained by phosphorization of NiSe 2 nanosheet arrays grown on the carbon cloth. The heterostructure catalyst exhibits excellent HER performance in 1 M KOH, only requiring an overpotential of 66 mV at a current density of 10 mA cm −2 with a Tafel slope of 72.6 mV dec -1 and showing excellent long-term durability. The experimental and theoretical calculation results demonstrate the strongly electronic interaction between Ni 2 P and NiSe 2 , resulting in the optimized Gibbs free energy of hydrogen and water adsorption. This work concerning the regulation of electronic structure through interface engineering may offer a deep insight to explore superior catalysts.
研究领域:
材料科学
·
电化学
·
催化科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Yanwei Sui
Herein, we design and construct the hierarchical NiCo 2 O 4 @Ni 0.85 Se core-shell architecture directly growing on Ni foam as advanced materials for supercapacitor . The composite materials deliver excellent electrochemical performance with a high specific capacitance of 1454 F/g and superior cycle life with 88.5% retention after 10000 cycles, which ascribed to the synergistic effect of pure NiCo 2 O 4 and Ni 0.85 Se. Furthermore, the NiCo 2 O 4 @Ni 0.85 Se//AC asymmetric supercapacitor were fabricated with a highest energy density of 29.3 W h kg −1 at power density of 799 W kg −1 . It is expected that the NiCo 2 O 4 @Ni 0.85 Se will be a kind of promising electrode materials for supercapacitor.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2022
·
IF 8.907
Guiquan Liu,Guorong Wang,Xin Guo,Xuqiang Hao,Kai Wang,Zhiliang Jin
The poor ionic and electronic conductivities of pseudocapacitive materials are important constraints for the further development of supercapacitors . In this work, a new Se-NiAl-LDHs electrode material was successfully synthesized by a pre-synthetic solvothermal reaction and selenization modification procedure. On the basis of the NiAl-LDHs microstructure, partially new crystalline NiSe 2 selenides are surface-generated, and the resulting Se-NiAl-LDHs electrode material exhibits an impressive specific capacitance of 1098 F g −1 at a current density of 1 A g −1 . Furthermore, this newly synthesized Se-NiAl-LDHs electrode exhibits a good capacity retention of 60.47% at 20 A g −1 , which is superior to the outdated NiAl-LDHs electrode. Moreover, when the power density reaches 1593.17 W kg −1 , the energy density of the as-prepared soft-encapsulated Se-NiAl-LDHs//AC ASC is 29 Wh kg −1 . The focus of this work is to selenize the NiAl-LDHs microstructure so that the energy storage performance has been improvement due to the better energy storage, smaller electrochemical impedance, multiple oxidation states and more abundant chemical active sites after selenide treatment.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Materials Today Physics
·
2025
·
IF 9.7
Wenqi Guo,Guangping Yang,Tianxiang Yang,Yali Tuo,Zhiguo Wang,Xiaorong Xu,Chaowei Luo,Haoyi Chen,Tianyi Zhang,Changcheng Chen,Sining Yun
Due to the urgent demand for clean energy transitions, the development of bifunctional electrode materials with efficient energy storage and conversion capabilities has become a priority. This paper presents a novel nanohydrangea-like BNC@NiO/NiSe 2 composite with triple-phase heterointerfaces fabricated using boric acid-modified ZIF-8-derived B/N co-doped porous carbon (BNC) and a controlled selenization strategy. The heterogeneous structural design facilitated interfacial electron delocalization and constructed a three-phase built-in electric field, optimizing electron transport paths and active site distribution, and improving the charge transfer efficiency. The 3D porous BNC matrix effectively prevented NiO/NiSe 2 nanosheet aggregation, whereas interfacial charge redistribution significantly enhanced the conductivity and reaction kinetics. As a supercapacitor electrode, BNC@NiO/NiSe 2 delivered a high specific capacitance of 862 F g −1 at 1 A g −1 and maintained 416 F g −1 at 20 A g −1 (retaining 70.8 % capacity after 2000 cycles). For the hydrogen evolution reaction, BNC@NiO/NiSe 2 achieved a low overpotential ( η 10 ) of 126 mV with a Tafel slope of 74 mV dec −1 , demonstrating 100 h stability. Density functional theory (DFT) calculations revealed that heterogeneous interfaces promoted electron delocalization and facilitated the formation of directional built-in electric fields through electron density differences, synergistically optimizing the redox kinetics and charge transfer efficiency. This study provides new insights into the design and use of heterojunction materials as high-performance, stable bifunctional electrodes.
✓ 已验证
产品关联
DOI
高影响因子
Catalysts
·
2025
·Vol. 15
·期 9
·876
·
IF 4
Lijie Sun,Yaqun Mi,Bo Li
Doping a third element or external functional components into binary alloy nanostructured catalysts typically significantly enhances their electrocatalytic performance. This study demonstrates that doping nickel selenide (NiSe2) with approximately10at%iron (Fe) is an effective strategy for improving its oxygen evolution reaction (OER) catalytic activity. The resulting Ni0.9Fe0.1Se2undergoes a structural transformation from its original nanodendritic morphology and exhibits outstanding OER catalytic performance in alkaline media. It achieves a low overpotential of231mVat a current density of10mAcm−2, which is approximately30%lower than that of NiSe2(301mV). The Tafel slope of Ni0.9Fe0.1Se2is116mVdec−1. However, degradation observed after 5 h of stability testing suggests that the doping process requires further optimization.
研究领域:
材料科学
·
电化学
·
纳米技术
·
催化
·
能量转换
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2025
·
IF 6.7
Lanrui Yin,Fei Zhou,Keling Yan,Yashi Pu,Guanghui Li,Di Tian
The weak interaction between transition metal selenides and carbon materials caused difficulties for their combination. In this study, a novel strategy based on lignin and Co nanoparticles was used for modifying electrospun carbon nanofibers to boost the growth of Ni 3 Se 4 . Interestingly, various types of lignin could induce the aggregation and distribution of Co nanoparticles, leading to different crystal structures, morphologies, and amounts of Ni-based selenides. Among them, sodium lignosulphonate brought about Co nanoparticles inside nanofibers and the formation of S–Co bonds, leading to the massive growth of Ni 3 Se 4 nanosheets with high redox activities and abundant active sites. As a result, the sample modified by Co and sodium lignosulphonate (CFLS@NiSe) with a diffusion-controlled hybrid capacity displayed the highest value of 384.00 C g −1 (853.33 F g −1 ) at 0.5 A g −1 and acceptable rate performance (capacity retention of 39 %, from 0.5 to 10 A g −1 ), which exceeded many reported transition metal selenide-carbon composites. Furthermore, a hybrid solid-state supercapacitor (CFLS@NiSe//bamboo derived active carbon) with a high energy density of 61.33 Wh kg −1 was assembled, which could supply energy for light emitting diode and deliver a capacity retention of 94.15 % as well as Coulombic efficiency of 92.29 % after 10,000 cycles. Compared with traditional modification strategies, this work proposed a novel, facile, feasible, low cost and environmentally friendly method to modify carbon nanofibers to regulate the growth of selenides, which will offer ideas for the design of composite materials.
研究领域:
材料科学
·
储能
·
纳米技术
·
电化学
·
复合材料
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2024
·
IF 20.2
Shuai Liu,Fumin Wang,Jiawei Wang,Zheng Wang,Xinyuan He,Tongxue Zhang,Zhiwei Zhang,Qian Liu,Xijun Liu,Xubin Zhang
Efficient and cost-effective catalysts are essential to drive the oxygen evolution reaction (OER) in sustainable hydrogen production through water splitting. In this study, we introduce an innovative strategy aimed at constructing heterogeneous structure that form abundant Fe 2 O 3 /NiSe 2 interfaces on the FeOOH surface. The resulting catalyst exhibits extraordinary performance with an excellently low overpotential of 169 mV at 10 mA cm −2 . Notably, this catalyst also demonstrates impressive long-term stability in alkaline seawater . Compared to traditional heterogeneous catalysts with core-shell structures, Fe 2 O 3 /NiSe 2 possesses a closely heterogeneous interface, which plays a role in modulating the interface electron. Supported by complementary spectroscopy and theoretical calculations, it has been further demonstrated that the distinctive Fe-O-Ni-Se structure can effectively modulate the electronic state of Ni, thereby enhancing the adsorption of oxygen-containing intermediates and facilitating oxygen desorption. Overall, this research presents a promising avenue for enhancing the electrocatalytic performance by amplifying active sites at interfaces.
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）