JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2021
·Vol. 25
·期 5
·1503-1512
·
IF 2.647
Zhang Aiqin,Xiao Yuanhua,Cao Yang,Fang Hua,Zhang Yong,Das Paramita,Zhang Huan
Transition metal–based catalysts are considered to be promising materials to replace noble metal catalysts for electrocatalytic water splitting. Herein, a flexible electrode composed of Co-Ni-P ternary catalysts and carbon fiber paper substrate (Co-Ni-P/CFP) was successfully fabricated and applied in water electrolysis. The Co-Ni-P coatings were deposited on CFP by a one-step cyclic voltammetric electrodeposition method and the surface of the composite material exhibits nano-reticular structure. The formation mechanism was also discussed according to the results of material characterization. Notably, the Co-Ni-P/CFP flexible electrode exhibited superior catalytic performance for both hydrogen and oxygen evolution reactions in alkaline media, which could achieve 10 mA/cm 2 current density with overpotential of 89 mV for HER and 320 mV for OER. Moreover, the Co-Ni-P/CFP electrode could also be used as both anode and cathode electrode to drive overall water splitting and required only 1.64 V to achieve a current density of 10 mA/cm 2 , which was very close to that of the commercial combination of Pt/C and IrO 2 . This affordable and easily obtained electrode offers a new avenue to develop earth-abundant resource catalysts for water electrolysis system.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2014
·
IF 5.9
Quanyao Yu,Zhixiang Zeng,Wenjie Zhao,Yongcun Ma,Xuedong Wu,Qunji Xue
Patterned hydrophobic Ni–P alloy films consisting of orderly and regular micro-nanoscale particles were fabricated through the synergistic effect of electrochemical deposition and chemical deposition. Ni–P alloy films were deposited for different times and characterized by scanning electron microscope (SEM). It was confirmed that the addition of reducing agent induced the formation of nanoscale particles, in contrast with pure Ni film deposited by single electrochemical deposition. As “point-discharge effect”, the current density was higher at the edge of the nanoscale particles, and Ni ions would be deposited at the particles through the “point-discharge effect”. Then the Ni–P alloy films grew by “reducing–discharging” process. The X-ray photoelectron spectroscopy (XPS) was used to detect the composition and valence states of these alloy films. The existence of oxidation state of element P in these films corresponding to that in H2PO3–, also gave direct evidence for the occurrence of chemical deposition, during the electrochemical deposition process. The prolongation of deposition time could provide more time for the patterned morphology to grow up. The surface roughness, evaluated by surface profilometer, increased as the deposition time extension. And these films showed gradually increased hydrophobic properties with the increase in deposition time.
研究领域:
材料科学
·
表面工程
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2024
·Vol. 53
·期 6
·3089-3099
·
IF 2.2
Zhao Wenxia,Hui Kaihong,Zhao Wei,Chen Huaijun,Cui Yubo,Li Xinwei,Liu Xin,Song Yifan,Hui Kaining,Yan Yani,Qiao Liang,Wang Zenglin
The effects of additives on the deposition rate, surface morphology, Ni and P elemental content of the electroless plating layer, and roughness of the electroless plating Ni-P layer were investigated. In an electroless plating Ni-P system, ethylenediaminetetraacetic acid disodium salt (EDTA-2Na) and sodium hypophosphite monohydrate were used as the complexing agent and reductant, respectively. The linear sweep voltammetry (LSV) polarization curve results showed that the compound addition of 1.0 mg L −1 L-tyrosine, 2.0 g L −1 saccharin, and 6.0 mg L −1 sodium dodecyl sulfate (SDS) could inhibit sodium hypophosphite oxidation and nickel ion reduction, which eventually reduced the Ni-P deposition rate. The Tafel polarization curves indicated that the compound additives obviously improved the corrosion resistance of the Ni-P electroless plating layer. Field emission scanning electron microscopy (SEM) images showed that the composite additives generated fine and uniform Ni-P electroless plating particles and enhanced the density, eliminated the surface cracks, and reduced the pinholes on the electroless plating layer surface. Atomic force microscopy (AFM) tests showed that the addition of complex additives improved the smoothness of the plated layer, the R a value was reduced from 135.0 nm to 53.2 nm, and the R q value was reduced from 164.0 nm to 93.0 nm. The final composition and implementation conditions of the EDTA-2Na-based Ni-P electroless plating system were determined. The deposition rate was 10.44 μm h −1 , the P content of the electroless plating layer was 2.2%, and the electroless plating player was silver-white and bright. Graphical Abstract
研究领域:
材料科学
·
电化学
·
表面工程
✓ 已验证
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2024
·
IF 5.3
Zhigao Ma,Bingyan Jiang,Dietmar Drummer,Lu Zhang
An electrolyte solution incorporating sodium saccharin and an alkynyl compound was provided to electroform Ni-P-PTFE mold inserts with both low internal stress and good self-lubricating properties. The results showed that with 5 g·L −1 sodium saccharin and 1 mL·L −1 alkynyl compound, the internal stress reached a minimum of −114 MPa, an 82 % reduction from the −646 MPa observed without additives. The presence of sodium saccharin and alkynyl compound in the electrolyte solution reduced the hydrogen evolution reaction current from 15.2 to 12.9 mA at the operating cathode potential of −1 V and decreased the RTC (111) from 100 % to 90 %. The reduction of internal stress in the electrodeposited Ni-P-PTFE composites was attributed to the decreased hydrogenation strain, diminished Ni (111) texture intensity, and the partial incorporation of alkynyl compound reaction products into the deposits, which weakened the connections between crystallites. Finally, 5 g·L −1 sodium saccharin and 1 mL·L −1 alkynyl compound was applied to electroform Ni-P-PTFE mold insert with micro features. Only slightly pile-up defects at the corner of grooves were observed on the polymer chips demolded from Ni-P-PTFE mold insert, demonstrating its good self-lubricating property.
研究领域:
材料科学
·
电化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Shumin Li,Jun Tan,Zhejun Jiang,Jin Wang,Zhengquan Li
Dye-sensitized systems show promising in photocatalysis because they can separate the tasks of light absorption, charge generation and surface catalysis to two coupled components. In this system, it is crucial to develop suitable catalysts capable of receiving dye-injected charges and having high activity to a given reaction. Aiming to photocatalytic H 2 and O 2 production, we present a metal-organic framework derived route to prepare bimetallic Fe-Ni-P nanotubes using Fe-Ni-MIL-88 nanorods as templates. When integrated with different dyes, these Fe-Ni-P nanotubes can serve as efficient catalysts for photocatalytic H 2 and O 2 production, respectively. Additionally, catalytic activities of such dye-sensitized systems can be conveniently regulated by tailoring the metal compositions in Fe-Ni-P nanotubes. The photocatalytic H 2 production of Fe 1 -Ni 2 -P can reach 5420 μmol g cat −1 h −1 under eosin-Y sensitization, which is 24 times and 6.7 times higher than Fe 2 P and Ni 2 P, respectively. The photocatalytic O 2 production of Fe 1 -Ni 2 -P can reach 900.3 μmol g cat −1 h −1 under [Ru(bpy) 3 ]Cl 2 sensitization, about 4.6 times and 2.9 times higher than Fe 2 P and Ni 2 P. The roles of different components in the system have been explored and corresponding working mechanism is proposed. This work demonstrates a new type of dye-sensitized systems consisting of bimetallic phosphides and provides a facile route to regulate their photocatalytic performance.
研究领域:
材料科学
·
光催化
✓ 已验证
DOI
高影响因子
THIN SOLID FILMS
·
2022
·
IF 2.358
Yahui He,Shihong Zhang,Yi He,Hongjie Li,Yi Fan,Yihan Zhang,Yuxin Xiang,Teng He,Ruxia Song,Bo Liu,Zhifei Zhang
Zirconium carbide (ZrC) nano-ceramic particles were embedded in the nickel-phosphorus (Ni-P) nanocomposite coating on the surface of N80 steel through electroless deposition strategy. The addition of ZrC can significantly affect the surface morphology, microstructure, wear resistance and corrosion resistance of the coating. Compared with pure Ni-P coating, the average friction coefficient of Ni-P/ZrC (1 g·L −1 ) composite coating decreased from 0.510 to 0.224, and the specific wear rate is reduced from 1.31 × 10 −5 mm 3 ·m −1 ·N −1 to 2.81 × 10 − 6 mm 3 ·m −1 ·N −1 . In terms of improving the corrosion resistance of the coating, Ni-P/ZrC (1 g·L −1 ) composite coating shows a lower corrosion tendency and a higher electrochemical impedance, and its corrosion rate (4.54 × 10 −3 mm·a −1 ) is one order of magnitude lower than Ni-P coating (5.08 × 10 −2 mm·a −1 ). In addition, the long-term corrosion experiments of the samples show that the composite coating has a longer protective effect on the substrate. Through the analysis of the corrosion morphology, it is found that the improvement of the corrosion resistance of the coating is due to the addition of ZrC, which reduces the surface defects of the coating. At the same time, the labyrinth effect formed between ZrC and the coating can also slow down the corrosion rate.
研究领域:
材料科学
·
表面工程
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
SURFACE REVIEW AND LETTERS
·
2018
·
IF 0.734
GAO PINGPING,OUYANG CHUN,XIE ZHIYONG,TAO TAO
The Ni-P/TiN coating was used as bipolar plate by electroless plating on Ti. Surface morphology and phase structure of the coatings were characterized by SEM and XRD, respectively. Corrosion resistance of Ni-P and Ni-P/TiN coating was measured in the simulated solution of Proton exchange membrane fuel cells (PEMFCs). The interfacial contact resistance (ICR) was conducted by applied different forces. SEM images indicated that the particles of core–shell structure were formed on the surface of coating on Ti substrate. The core–shell structure was composed of TiN core and Ni-P electroless plating shell. Compared with Ni-P coatings, the Ni-P/TiN coating showed better corrosion resistance behaviors and low ICR (below 10 m Ω cm − 2 under pressure of 200 N/cm 2 ) . TiN particles and distribution of core–shell were in favor of the formation of coating and compact surface morphology. The good conductivity was attributed to the compact surface morphology of coating. The Ni-P/TiN coating showed excellent interfacial conductivity and good corrosion resistance at applied high potential in simulated solution of PEMFCs.
研究领域:
材料科学
·
能源工程
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
·
2020
·
IF 3.905
Kai Li,Bo Wang,Dana Bolatibieke,Dong-Hong Nan,Zhen-Xi Zhang,Min-Shu Cui,Qiang Lu
Levoglucosenone (LGO) is a valuable chiral synthon and can be produced from pyrolysis of cellulose and biomass. In the present study, Ni-P-MCM-41 catalysts with various P-to-Ni ratios were prepared and employed for selective production of LGO from biomass. Both analytical pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) and lab-scale experiments were conducted to explore the effects of several factors on the formation of LGO, including P-to-Ni ratio in Ni-P-MCM-41, catalyst/sample ratio and pyrolysis temperature. The results revealed that all the Ni-P-MCM-41 catalysts, especially the one with a P-to-Ni ratio of 5, exhibited excellent catalytic capability and selectivity for LGO production. For Py-GC/MS, the maximal LGO yields of 27.34 wt% and 14.30 wt% were achieved from cellulose and pine at 350 °C with catalyst/cellulose ratio of 3 and catalyst/pine ratio of 2, respectively. While in lab-scale experiments, the highest LGO yields from cellulose and pine were 21.37 wt% and 10.71 wt%, with the corresponding selectivity of 78.31% and 53.75%, respectively. The Ni-P-MCM-41 catalyst possessed much better catalytic efficiency on the LGO production than previously reported catalysts, including H 2 SO 4 , H 3 PO 4 , solid superacid, solid phosphoric acid and activated carbon.
研究领域:
化学工程
·
可再生能源
·
催化
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 16
·10169-10179
·
IF 12.732
Fuzhen Zhao,Huicong Liu,Houyu Zhu,Xiaoyu Jiang,Liqun Zhu,Weiping Li,Haining Chen
Amorphous/amorphous heterostructures with a large surface area are theoretically anticipated to promote the alkaline hydrogen evolution reaction (HER) activity and stability. However, the growth, characterization and theoretical simulation of amorphous/amorphous nanostructured heterostructures are still challenging due to their atomic isotropy. Herein, a novel and simple strategy is developed to synthesize amorphous/amorphous Ni–P/Ni(OH)2 heterostructure nanotubes by immersing Zn@Ni–P nanowires grown by axial screw dislocation in alkaline solution. When used as an HER catalyst, the Ni–P/Ni(OH)2 nanotubes achieve considerably high electrocatalytic activity and decent stability. The significantly low overpotential of 54.7 mV at a current density of 10 mA cm−2 is among the best values reported for transition metal phosphides in alkaline solution. Density functional theory calculations indicate that the abundant defect structures of amorphous Ni–P would shift the Ni 3d band center toward the Fermi level, demonstrating an energy barrier decrease for H2 generation. Furthermore, the synergistic effect of amorphous Ni–P and Ni(OH)2 could significantly enhance H2O dissociation to supply sufficient protons for the HER.
研究领域:
材料科学
·
电化学
·
理论计算
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2014
·
IF 4.086
Huanmei Ma,Jianhua Tian,Shuming Bai,Xiaodong Liu,Zhongqiang Shan
In this paper, Pt-Ru/Ni-P/FTO has been designed and fabricated as the counter electrode for dye-sensitized solar cells. The Pt-Ru catalytic layer and Ni-P alloy sublayer are prepared by traditional electrodeposition method and a simple electroless plating method, respectively, and the preparation conditions have been optimized. The scanning electron microscopy (SEM) images show that the Pt-Ru particles are evenly distributed on FTO and Ni-P/FTO substrate. By X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), it is confirmed that the Ni-P amorphous alloy has been formed, and no other compounds involved Ni and P have been formed. The electrochemical measurement results reveal that the Pt-Ru electrode has higher catalytic activity and stability towards tri-iodine reduction reaction than Pt electrode in the organic medium. The Ni-P sublayer deposited on FTO glasses increases the conductivity and light-reflection ability of the counter electrode, and this contributes to lowering the inner resistance of the cell and improving the light utilization efficiency. Through the photovoltaic test, it is confirmed that the energy conversion efficiency of a single DSSC with the optimized Pt-Ru/Ni-P/FTO counter electrode is increased by 29% compared with that of the cell based on the Pt/FTO counter electrode under the same conditions.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2023
·Vol. 27
·期 12
·3583-3595
·
IF 2.5
Chen Quangang,He Yi,Yan Siming,Zhou Huilian,Li Hongjie,Li Zhiyuan,Wei Kaijun,Chen Wen,Yan Jing,Wu Guiyang,Yuan Xi
The Ni-P-WS 2 composite coatings with prominent structures were constructed by composite electrodeposition by adding tungsten disulfide (WS 2 ) nanoparticles to the electroplating solution. Modification of the Ni-P-WS 2 composite coating with hexadecyltrimethoxysilane (HDTMS) is going to achieve the superhydrophobic effect. The successful construction of the superhydrophobic surface was demonstrated by X-ray diffractometer (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and contact angle measurement (CA). Electrochemical impedance spectroscopy (EIS) was used to investigate the corrosion resistance. The finding indicates that hexadecyltrimethoxysilane (HDTMS) reduces the surface energy of the Ni-P-WS 2 composite coating, generates a film on its rough surface, blocks the corrosive medium, and improves the corrosion resistance of the composite coating. The Ni-P-WS 2 nanocomposite coating’s water contact angle is 156.8° and its sliding angle is 8° at 3 g/L of WS 2 particle concentration. And the composite plating has the highest self-corrosion potential ( E corr = − 0.285 V) and the lowest self-corrosion current density ( i corr = 3.206 μA cm −2 ), with a better corrosion resistance. In addition, the prepared superhydrophobic coating showed excellent corrosion resistance under the hydrophobic barrier and the layer barrier of WS 2 nanosheets.
研究领域:
材料科学
·
表面工程
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2013
·
IF 3.777
Heng Zhang,Yi Lu,Chang-Dong Gu,Jian-Bin Cai,Xiu-Li Wang,Jiang-Ping Tu
Amorphous Ni–P–C films are fabricated by combining the electrodeposition of Ni–P films from a eutectic-based ionic liquid and the direct current magnetron sputtering of amorphous carbon top-layer. The carbon top-layer with a thickness of about 10 nm is homogeneously coated on the surface of the Ni–P films. A comparison study is undertaken between Ni–P and Ni–P–C films to evaluate the microstructure and the electrochemical performances of the composite films as anode materials for lithium ion batteries , which allow the decoupling of the effect of the carbon layer . It is found that at lower discharge–charge current densities, the cyclability of both Ni–P and Ni–P–C films is similar. As the discharge–charge current density increases, the Ni–P–C film exhibits improved capability and reversibility over the Ni–P film. The Ni–P–C film delivers an initial discharge capacity of 1060 mAh g −1 at 250 mA g −1 and the capacity retention after 50 cycles is 62%, much higher than that of the Ni–P film (51%). The cyclability of Ni–P–C film at different discharge–charge current densities from 200 to 500 mA g −1 is also much better than those of Ni–P film. This study indicates that the introduction of a carbon top-layer on Ni–P film could significantly improve the electrochemical performances due to the decreased interface electric resistance and the structure stability.
研究领域:
材料科学
·
电化学
·
纳米材料
·
能源存储
·
薄膜技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）