CHEMICAL ENGINEERING SCIENCE
·
2022
·
IF 4.889
Zhufeng Hu,Yinxiang Xu,Wenchao Xiang,Xiaodong Guo,Yuchen Tong,Junbo Xu,Chao Yang
The oxygen evolution reaction (OER) is the key to prepare electrocatalysts for water splitting. Heteroatom doping is an effective way to improve the catalytic performance of OER by modulating the local electronic environment and stimulating the synergy. However, the complicated manufacturing methods have hindered their practical application. Herein, we demonstrate a method based on FeOOH/CC precursor to realize the preparation of Ni-P-S@FeOOH/CC catalyst through fast electrodeposition method. The overpotential of Ni-P-S@FeOOH/CC catalyst is 210 mV (10 mA cm −2 ), and still has an initial voltage of 97.35 % for 48 h. The surface area analysis shows a higher electrochemically active surface area for the amorphous structure prepared by electrodeposition method. XPS and DFT results show that the co-doping of P and S can stimulate the synergistic effect and the minimum energy of adsorption/desorption in OER process is only 0.83 eV. The strategy shows good prospects for preparing efficient OER pre-catalysts.
研究领域:
材料科学
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电化学
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催化
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能源材料
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 16
·9791-9797
·
IF 10.733
Kai Deng,You Xu,Dandan Yang,Xiaoqian Qian,Zechuan Dai,Ziqiang Wang,Xiaonian Li,Liang Wang,Hongjing Wang
The structure- and composition-controlled synthesis of Pt-based nanocatalysts is highly important for improving their catalytic performance while reducing the overall use of precious Pt. Here, an effective strategy is developed to combine surface porosity, hollow cavities and metal–nonmetal incorporation engineering on Pt, resulting in ternary Pt–Ni–P mesoporous nanocages (Pt–Ni–P MNCs). Owing to the mesoporous surface, hollow structure and synergistic electronic effects derived from Pt, Ni, and P elements, the as-prepared Pt–Ni–P MNCs exhibit excellent electrocatalytic activity and long-term stability for both the oxygen reduction reaction (ORR) and methanol oxidation reaction (MOR), enabling them to be promising ORR–MOR bifunctional electrocatalysts for direct methanol fuel cells.
研究领域:
材料科学
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电化学
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催化科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2025
·
IF 2.6
Bi Mengqi,Liu Wei,Yang Menghui,Huang Naibao
To enhance the corrosion resistance of 316L stainless steel, which is a potential alternative bipolar plate material for PEMWE or PEMFC, Ni–P amorphous coating was prepared by DC electrodeposition method. The results indicated that the coating’s structure strongly related to the phosphorus (P) content. Under specific phosphorus content conditions, a dense coating (Ni–P-30) with typical amorphous characteristics can be obtained, with a uniform surface morphology and no obvious structural defects. In simulated PEMWE environment, Ni–P-30’s corrosion current density decreased by one order of magnitude and the corrosion potential shifted positively by 0.29 V comparing with untreated steel. The excellent corrosion resistance of the amorphous Ni–P coating is attributed by its continuous and dense microstructure, functioning as an effective physical barrier. Meanwhile, during corrosion process, the P will enrich on the surface from the preferential dissolution of nickel in amorphous Ni–P coatings, improving the corrosion potential, reducing the corrosion current and inhibiting the hydration of Ni. Preliminary studies have shown that Ni–P-coated 316L stainless steel can be used as a replacement for graphite as a bipolar plate for PEMWE and PEMFC.
研究领域:
材料科学
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电化学
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表面工程
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能源材料
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腐蚀科学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 12
·6560-6568
·
IF 14.511
Yunqing Kang,Haoran Du,Bo Jiang,Hui Li,Yanna Guo,Mohammed A. Amin,Yoshiyuki Sugahara,Toru Asahi,Hexing Li,Yusuke Yamauchi
Supported amorphous alloy catalysts have received wide attention due to their unique structural and electronic properties, high catalytic activity, and thermal stability. In this work, a carbon nanotube (CNT)-supported amorphous Ni–P alloy nanoparticles (NPs) catalyst, referred to as Ni–P/CNTs-MA, is synthesized using a simple one-pot microwave-assisted approach. The prepared Ni–P/CNTs-MA catalyst displays smaller Ni–P NPs, higher metal dispersion and stronger metal–support interactions than the reference catalyst prepared by the traditional water bath heating method (Ni–P/CNTs-WB). The resulting Ni–P/CNTs-MA catalyst exhibits enhanced catalytic activity for the hydrogenation of nitroarenes compared to the Ni–P/CNTs-WB catalyst. The Ni–P/CNTs-MA catalyst also exhibits improved thermal stability and catalytic durability, probably due to the strong interaction between the Ni–P NPs and CNTs.
研究领域:
材料科学
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催化
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Cailing Song,Qianwen Jin,Wen Zhang,Chenchen Hu,Zhumabay Bakenov,Yan Zhao
Lithium-sulfur (Li-S) batteries have drawn a lot of attention owing to the high theoretical capacity of 1675 mAh g −1 , environmental friendliness and relative abundance of sulfur. Nevertheless, the severe dissolution and migration of lithium polysulfides (LiPSs) and poor conductivity of sulfur greatly hinder the practical application of Li-S batteries. In this work, Fe-Ni-P@nitrogen-doped carbon (named as Fe-Ni-P@NC) derived from Fe-Ni Prussian blue analog (Fe-Ni PBA) was used as highly efficient sulfur host for Li-S batteries. The Fe-Ni-P particles not only enhance the adsorption of LiPSs but also effectively promote the conversion of LiPSs. In addition, the CN – of PBAs can readily generate nitrogen-doped carbon during pyrolysis, which can improve the conductivity of composites. Due to these advantages, Li-S batteries using S@Fe-Ni-P@NC composites cathodes exhibited good electrochemical performance with outstanding rate capability and stable cycling over 500 cycles with a lower capacity fading rate of 0.08% per cycle at 1 C.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Shuting Zhang,Mingyang Liu,Jianan Liu,Zhangxin Xu,Qianxi Liu,Ruihong Wang,Huiyuan Meng,Baojiang Jiang
It is an efficient strategy to introduce dual active sites into alkaline urea-assisted water electrolysis systems by interfacial coupling, but it still poses certain challenges. In this study, Ni 2 P-RuP 2 /C with hollow sphere structure is designed and synthesized by using solvothermal, ion exchange and one-step phosphating strategy. Studies utilizing density functional theory (DFT) and Synchrotron radiation show that Ni-P-Ru bridge in Ni 2 P-RuP 2 /C acts as an electron transport pathway that promotes localized charge redistribution, causing electrons to flow from Ni 2 P/C to RuP 2 /C, optimizing the d-band center and reducing the reaction barrier of HER and UOR. It is determined that the electron-rich Ru sites favor proton adsorption and the electron-deficient Ni sites favor the adsorption of urea molecules and the release of CO 2 which become the true active sites of HER and UOR, respectively. The optimized Ni 2 P-RuP 2 /C need merely 13 mV and 1.314 V to attain 10 mA cm −2 for HER and UOR, respectively. This study provides a reliable pathway for green hydrogen production through the construction of Ni-P-Ru bridge.
研究领域:
电化学
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催化化学
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材料科学
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能量转换
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计算化学
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Jun Chen,Boding Zhang,Bingxing Wang,Chengxing Cui,Songlin Wang,Jichao Wang,Wenlong Zhang
With high toxicity, carcinogenicity and teratogenicity, quinoline has been threatening human health and ecological environment. Herein, Fe-Co-Ni-P/g-C 3 N 4 particles are developed as electrochemical reactors to form a three-dimensional catalytic particle electrode system (3D-CPE) for efficient removal of quinoline from wastewater by electro-Fenton (EF) oxidation process. with reaction time of 30 min, the particles dosage of 50 g/L, pH of 3, conductivity of 11.5 ms/cm, and current density of 37.04 mA/cm 2 , the chemical oxygen demand (COD) removal rate can up to 90.95%. In addition, electron paramagnetic response (EPR) and radical scavenging tests are performed to determine the hydroxyl radicals of electrochemical processes produced. The degradation products are analyzed by high performance liquid chromatography-mass spectrometry (HPLC-MS). Finally, through theoretical calculation and analysis of degradation products, a reasonable degradation mechanism is proposed.
研究领域:
环境科学
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化学工程
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水处理
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电化学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHARACTERIZATION
·
2022
·
IF 4.537
Yahui He,Shihong Zhang,Yi He,Hongjie Li,Teng He,Ruxia Song,Bo Liu,Zhifei Zhang,Yi Fan
Ni-P/α-ZrP composite coatings were successfully prepared by electroless plating, in which α-ZrP nanosheets were synthesized by reflow method. The surface morphology, element composition, structure and valence composition of the composite coating were analyzed by SEM, EDS, XRD and XPS, respectively. In the reciprocating friction experiment and electrochemical test, the corrosion and wear behaviour of the composite coatings were analyzed. The results show that α-ZrP nanosheets can significantly improve the corrosion and wear resistance of Ni P alloys. With the enrichment of α-ZrP nanosheets, the properties of coatings showed a tendency of increasing first and then slightly decreasing. Ni-P/α-ZrP (1.00 g/L) coating has the lowest porosity and the best corrosion resistance, and its corrosion rate (6.01 × 10 −3 mm/a) is about 1/5 of that of pure Ni P coating (3.12 × 10 −2 mm/a). Ni-P/α-ZrP (1.50 g/L) coating has the best wear performance, its average coefficient of friction (COF) is reduced from 0.568 to 0.167, and the specific wear rate is reduced from 7.13 ± 0.42 (× 10 −6 ) to 0.36 ± 0.06 (× 10 −6 ) (about 1/20 of pure Ni P coating).
研究领域:
材料科学
·
表面工程
·
电化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Mingxia Li,Zihao Liu,Qingqing Zha,Shifeng Li,Yonghong Ni
A mutual template route was designed to prepare Ni-P/Fe(OH) 3 -Cu nanotube arrays with a high electrocatalytic activity for OER. In 1.0 M KOH solution, the as-obtained hybrid electrocatalyst required only a low overpotential of 271 mV to achieve a current density of 20 mA cm −2 with a small Tafel slope of 57.7 mV dec −1 . After 1000 CV cycles at the scan rate of 100 mV s −1 , the overpotential of the catalyst hardly increased; and after continuously catalyzing for 130 h at 20 mA cm −2 , the potential only slightly increased, implying that the as-obtained hybrid electrocatalyst possessed excellent cycle stability and long-term stability. The above outstanding electrocatalytic activity should be ascribed to its special tubular structure and the synergicaction between Ni-P alloy and Fe(OH) 3 nanotubes. Moreover, the presence of elemental copper, which was formed by the in-situ electrochemical reduction of Cu(OH) 2 , also enhanced the catalytic performance due to its excellent electrical conductivity.
研究领域:
电化学
·
催化材料
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能源转换与存储
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Meng-xing Xu,Yan Xu,Yu-zhen Liu,Dan Zhao,Shun-min Ding,Chao Chen
Acquiring practical catalysts was crucial for promoting the application of advanced chemical transformations. Here, a series of Co-Ni-P catalysts with addition of Y were designed for hydrogenation transformation of biomass-derived levulinic acid (LA) or furfural (FAL) in water. The molar-composition-manipulated catalysts were characterized in Co-Ni phosphide alloy nanostructure with YPO 4 enriched on surface and denoted as (YPO 4 ) x /Co y Ni 2-y P. By comprehensive catalytic measurements, both Co:Ni ratio in phosphide alloy and amount of YPO 4 were testified to be key factors to modulate intrinsic catalytic properties (hydrogen activation and acid catalysis) along Y-Co-Ni-P interface, the attractive and reproducible yield for desired product γ-valerolactone (up to 98 %) or cyclopentanone (up to 93%) could achieve under low H 2 pressure of 0.1–0.5 MPa over the well modulated catalyst (YPO 4 ) 0.2 /Co 1.0 Ni 1.0 P in comparison with high H 2 pressure (beyond 1.0 MPa) required in most of literature systems, indicating that the efficiency and feasibility of these important biomass transformations could be greatly enhanced on the low-cost and robust (YPO 4 ) x /Co y Ni 2-y P catalysts. These findings suggested that the phosphide-alloy engineering technique provided in this work could serve as a novel and practical method for innovating competitive catalysts to boost advanced heterogeneous catalysis applications as well as current aqueous hydrogenation transformations of biomass derivatives.
研究领域:
催化化学
·
生物质能
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绿色化学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Science
·
2022
·Vol. 9
·期 22
·2201594
·
IF 17.521
Rui Yang,Xiaozhong Zheng,Minkai Qin,Binbin Lin,Xiaoyun Shi,Yong Wang
Recently, extensive research efforts have been devoted to drive electrocatalytic water-splitting for hydrogen generation by electricity or solar cells. However, electricity from power grid and the intermittent property of sunlight inevitably brings about environmental pollution and energy loss. Thus, a novelty energy system for simultaneous generating H 2 from solar energy and overcoming the intermittence of sunlight is highly desirable. Herein, a self-powered energy system with solar energy as the sole input energy is successfully assembled by integrated Zn–air batteries with stable output voltage, solar cells, and water splitting electrolyzer to efficient H 2 production. Specially, the Zn–air batteries are charged by the solar cell to store intermitted solar energy as electricity during light reaction. Under unassisted light reaction, the batteries could release electric energy to drive H 2 production. Therefore, the aim for simultaneous generating H 2 and eliminating the restrictions of intermittent sunlight are realized. The solar-to-hydrogen efficiency and solar-to-water splitting device efficiency of the self-powered energy system are up to 4.6% and 5.9%, respectively. This work provides the novel design systems for H 2 production and the usage of renewable energy.
研究领域:
材料科学
·
可再生能源
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Defence Technology
·
2023
·
IF 5.1
Chao Wang,Ying Liu,Mingze Wu,Jia Li,Ying Feng,Xianjin Ning,Hong Li,Ningfei Wang,Baolu Shi
A novel design of micro-aluminum ( μ Al) powder coated with bi-/tri-component alloy layer, such as: Ni–P and Ni–P–Cu (namely, Al@Ni–P, Al@Ni–P–Cu, respectively), as combustion catalysts, were introduced to release its huge energy inside Al-core and promote rapid pyrolysis of ammonium perchlorate (AP) at a lower temperature in aluminized propellants. The microstructure of Al@Ni–P–Cu demonstrates that a three-layer Ni–P–Cu shell, with the thickness of ∼100 nm, is uniformly supported by μ Al carrier (fuel unit), which has an amorphous surface with a thickness of ∼2.3 nm (catalytic unit). The peak temperature of AP with the addition of Al@Ni–P–Cu (3.5%) could significantly drop to 316.2 °C at high-temperature thermal decomposition, reduced by 124.3 °C, in comparison to that of pure AP with 440.5 °C. It illustrated that the introduction of Al@Ni–P–Cu could weaken or even eliminate the obstacle of AP pyrolysis due to its reduction of activation energy with 118.28 kJ/mol. The laser ignition results showed that the ignition delay time of Al@Ni–P–Cu/AP mixture with 78 ms in air is shorter than that of Al@Ni–P/AP (118 ms), decreased by 33.90%. Those astonishing breakthroughs were attributed to the synergistic effects of adequate active sites on amorphous surface and oxidation exothermic reactions (7597.7 J/g) of Al@Ni–P–Cu, resulting in accelerated mass and/or heat transfer rate to catalyze AP pyrolysis and combustion. Moreover, it is believed to provide an alternative Al-based combustion catalyst for propellant designer, to promote the development the propellants toward a higher energy.
研究领域:
材料科学
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燃烧与推进
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化学工程
✓ 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）