CERAMICS INTERNATIONAL
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2024
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IF 5.1
Yanan Sun,Yuqi Zhu,Shengjiang Zhang,Suhang Chen,Fengqi Zhao,Kangzhen Xu
Thermal decomposition of ammonium perchlorate (AP) typically requires high temperatures and activation energy, but the introduction of combustion catalysts will improve its thermal decomposition performance. Therefore, it is crucial to rationally design combustion catalysts for enhancing the thermal decomposition performance of AP. Herein, 3D NiO nanoflowers@2D graphite-phase carbon nitride (g-C 3 N 4 ) nanosheets (NiO@x%CN, x = 1, 3, 5, 7, 9) composite catalysts were constructed by solvothermal and calcination methods, and characterized by a series of analyses. NiO@5%CN displayed the best ability to catalyze the thermal decomposition of AP, which reduced the high decomposition temperature of AP by 113.8 °C and the activation energy by 21.67 kJ mol −1 . The combustion rate of NiO@5%CN-CSP has increased by 118 % compared to that of composite solid propellants. This work provides a new insight for the design of NiO-based high-efficiency combustion catalysts.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
NANO
·
2020
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IF 1.566
Lei Su,Chunyong Zhang,Li Shu,Linna Huang,Jianning Li,Hengfei Qin
A series of metal oxide nanocomposites have been successfully synthesized by electrospinning technology. The obtained nanocomposites (Cu 2 O-Mn 3 O 4 -NiO) are an ordered arrangement of metal oxide particles (10 nm), with the shape like bead chain. The acquired Cu 2 O-Mn 3 O 4 -NiO ternary nanocomposites were used as electrode materials to manufacture a supercapacitor. Electrochemical tests showed that the synthesis of nanocomposites made of electrode materials had good electrochemical performance in 6 mol/L KOH electrolyte. The results showed that at a scan rate of 5 mV/s, the specific capacitance of Cu 2 O-Mn 3 O 4 -NiO had a larger specific capacitance of 1306 F/g than NiO, Cu 2 O-NiO and Mn 3 O 4 -NiO. The excellent electrochemical performance showed that the electrostatic spinning method is an effective technology for developing nanocomposites for energy storage devices.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2018
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IF 4.439
Rui Xu,Jianming Lin,Jihuai Wu,Miaoliang Huang,Leqing Fan,Zedong Xu,Zeyu Song
Currently, although some progress has already been achieved, the complex and high-cost synthetic route, and low electrochemical properties of supercapacitor still restrict its practical application. Here, NiMoO 4 /NiO nanoflowers material with a high specific surface area grown on a nickel foam conductive substrate is successfully synthesized via a facile and efficient method, which exhibits an excellent capacitance of 10.3 F cm −2 (1982.3 F g −1 ), a good rate capability, and a remarkable cycling stability (capacity remain 98.6% after 3000 cycles). In addition, a novel asymmetric supercapacitor with excellent energy density is also fabricated via the NiMoO 4 /NiO nanoflowers as the positive electrode and a piece of active carbon as the negative electrode in 3 M KOH electrolyte. The optimized asymmetric device operating at 1.7 V also offers a high energy density and an outstanding long-term cycling stability. These impressive results suggest that such NiMoO 4 /NiO nanoflowers can pave the way for designing and developing next-generation high-performance storage systems.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2021
·
IF 3.498
Xuehui Li,Yujie Peng,Tao Tian,Dantong Wang,Xiaozhen Ren,Xipeng Pu
Facing environmental pollution, the development of semiconductor photocatalysts with efficient electron-hole pairs separation is necessary for better performance optimization and utilization. Here, a direct Z-scheme BiOBr–NiO-x% (x = 5, 10, 20, 30) photocatalysts with outstanding photocatalytic activity for dye degradation were prepared via the hydrothermal process. The XRD, XPS , FESEM, HRTEM and UV–vis DRS were used to characterize the components, phase structure, morphology and optical properties of the prepared samples. The prepared nano-flower like BiOBr–NiO-x% (x = 5, 10, 20, 30) composites had an extensive visible light absorption range and more vigorous absorption intensity than pure BiOBr. All the prepared composites exhibited better photocatalytic activity for rhodamine (RhB) degradation than that of pure BiOBr, with BiOBr/NiO-20% showing the best photocatalytic efficiency. The photocatalytic efficiency had reached 98% within 50 min for the BiOBr/NiO-20% composite. Due to the tight interfacial contact and matching band positions between BiOBr and NiO, a direct Z-scheme BiOBr/NiO heterojunction was built, which accelerated the visible light absorption, superior separation of photoinduced electron-hole pairs in space and improved the oxidation and reduction capacity of the catalysts, further leading to the excellent photocatalytic activity for degradation of RhB.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2020
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IF 16.683
Zong Liu,Chengzhe Zhang,Hui Liu,Ligang Feng
Herein, we highlighted that a catalyst system of NiSe 2 nanoparticle/NiO nanosheet catalyst exhibited efficient synergism for energy and environmental-relevant urea-assisted water electrolysis reactions. The spectral study and microscopic analysis demonstrated the formation of NiSe 2 nanoparticle/NiO nanosheet heterostructure and efficient Ni O bond and Ni Se bond synergism. Owing to various factors such as the strong synergetic coupling effects between NiSe 2 nanoparticle and NiO nanosheet, unique structure features, increased active sites and amount of intrinsic Ni 3+ ions, efficient synergism was found on the NiSe 2 Nanoparticle/NiO nanosheet for urea-assisted water electrolysis by comparing with the NiSe 2 Nanoparticle and NiO nanosheet alone. It required a cell voltage of 1.39 V, about 210 mV less than that of water electrolysis, confirming the less energy consumption during the electrolysis. Notably, it also shows remarkably superior long-term durability. The current work may extend the nanoparticle-nanosheet catalysts system for simultaneous wastewater treatment and clean energy production.
研究领域:
材料科学
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能源化学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
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IF 9.965
Yin'an Zhu,Jia Yao,Tao Lu,Ye Pan
Rationally designing a strongly coupled heterostructure with rich functional sites and high catalytic stability is essential for efficient energy conversion. This work synthesizes a self-supported NiO/RuO 2 heterostructure for hydrogen production via facile dealloying following an in-situ electrochemical oxidation method. It only requires 88 ± 1 mV to drive a current density of −100 mA/cm 2 in the alkaline electrolyte during hydrogen evolution reaction (HER), outperforming NiO, RuO 2 , and Pt foil. The higher anodic potential applied to the dealloyed ribbons results in lower overpotentials and faster reaction kinetics. Meanwhile, the catalytic activity and stability of the individual NiO can be significantly improved once coupled with a small amount of heterogeneous RuO 2 . The strong synergistic effect between NiO and RuO 2 contributes to exposing abundant active sites, optimizing electronic structure, facilitating charge transfer at the interface, and most importantly, maintaining structural stability. These advantages make the self-supported NiO/RuO 2 heterostructure a promising candidate for replacing the Pt-based catalysts.
研究领域:
材料科学
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能源转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS & DESIGN
·
2019
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IF 5.77
Haoxue Dong,Min Xia,Cuixiao Wang,Guoping Li,Yunjun Luo
Al/NiO nanocomposites are prepared via co -assembly with poly(4-vinylpyridine) (P4VP), and their enhanced energetic properties and combustion performance are studied. The results show that compared with physical mixing method, the structure of the Al/NiO nanocomposites with P4VP is more regular and compact, in which the grain sizes of Al and NiO nanoparticles are reduced from 56 nm and 29 nm to 51 nm and 25 nm, respectively. Therefore, their heat release, the maximum pressure of combustion, pressure rise rate of combustion and the maximum burning rate are greatly enhanced to 2190 J/g, 0.35 MPa, 260 MPa/s and 462 m/s, respectively, better than those obtained by physical mixing method. We further revealed that the reason for these improvements is that our method effectively suppresses the aggregation of nanoparticles, leading to uniform contact and sufficient interfacial area between the oxidant (NiO) and nano-fuel (Al), and thus significantly improving the reaction efficiency.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
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2017
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IF 4.798
Youxiu Wei,Mu Chen,Weiming Liu,Lei Li,Yue Yan
Electrochromic devices (ECDs) with different liquid electrolytes were fabricated using NiO film as counter electrode, WO 3 film as working electrode. The effect of liquid electrolytes containing different lithium salts (LiClO 4 , LiPF 6 , LiTFSI) on films and ECDs was investigated, such as transmittance change, charge density, memory effect and cyclic stability. Films or ECDs using LiPF 6 electrolyte have excellent electrochromic properties but low cyclic stability, compared with LiClO 4 and LiTFSI electrolytes. In order to deeply understand the effect of electrolyte on films and devices, the voltage distribution of films based on an analog cell and electrochemical impedance spectroscopy (EIS) were measured and analyzed in different lithium salts electrolytes. Results show that voltage distribution and EIS characteristics of films have obvious difference in liquid LiClO 4 , LiPF 6 and LiTFSI electrolytes. Voltage distribution on NiO and WO 3 films is unbalanced and the impedance of films in bleached and colored states is different in the same electrolyte.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2017
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IF 5.401
Danfeng Sun,Hongji Li,Mingji Li,Cuiping Li,Hongli Dai,Dazhi Sun,Baohe Yang
A novel NiO/carbon nanotube (CNT)/poly(3,4-ethylenedioxythiophene) (PEDOT) composite with a coaxial tubular nanostructure was successfully deposited on a glassy carbon electrode (GCE) through electrochemical processes. The outer PEDOT matrix has a high affinity for biomolecules, while the CNT inner layer has a strong electron-transport capacity. Hence, the NiO/CNT/PEDOT/GCE was used for the simultaneous determination of dopamine (DA), serotonin (5-HT), and tryptophan (Trp). Electrochemical responses of the NiO/CNT/PEDOT/GCE sensor were investigated by cyclic voltammetry, electrochemical impedance spectroscopy, and differential pulse voltammetry. Three well-separated oxidation peaks were observed in a mixed system containing DA, 5-HT, and Trp; the 5-HT–DA and Trp–5-HT potential separations were 160 and 324 mV, respectively, owing to the synergistic effect of NiO, CNT, and PEDOT. Linear responses were obtained for DA, 5-HT, and Trp in the 0.03–20, 0.3–35, and 1–41 μM concentration ranges, with detection limits of 0.026, 0.063, and 0.210 μM, respectively. In addition, it was possible to simultaneously determine the three analytes using the NiO/CNT/PEDOT composite, which suggests that the sensor has promising applicability.
研究领域:
分析化学
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生物医学工程
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材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2020
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IF 4.65
Ji-Jun Dong,Chao Ma,Qiang Zhang,Wen-Long Bai,Zhi-Peng Cai,Se-Si Li,Zhen Zhang,Xue-Yan Wu,Xiao Wei,Kai-Xue Wang,Jie-Sheng Chen
Lithium-oxygen batteries (LOBs) with superior energy density are recognized as a promising next-generation energy storage device for electric vehicles. However, the morphology and particle size of Li 2 O 2 as well as the parasitic products Li 2 CO 3 give an essential impact on electrochemical properties . To address these issues, a free-standing Co 3 O 4 -NiO@Ni electrode with Co 3 O 4 -NiO heterostructure nanoneedle arrays on Ni foam was fabricated. The Co 3 O 4 -NiO heterostructure would control the morphology and size of Li 2 O 2 . The free-standing carbon-free electrode design would avoid the generation of Li 2 CO 3 . Ultrathin Li 2 O 2 film is preferentially generated within the Co 3 O 4 -NiO heterostructure nanoneedles during the discharge process. The film-like morphology of Li 2 O 2 would decrease the Li 2 O 2 /electrode interfacial resistance and charge overpotential, and enhance the discharge capacity. The free-standing Co 3 O 4 -NiO@Ni electrode exhibits an improved electrochemical performance with a high discharge specific capacity of 7905 mAh g −1 at 0.1 A g −1 and good cyclic stability of 120 cycles at 0.1 A g −1 with a cutoff capacity of 500 mAh g −1 . This work provides a new strategy for improving the electrochemical performance of LOBs through the morphology control of Li 2 O 2 .
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2019
·
IF 6.019
Zhiqiang Xie,Qingqing Liu,Qianqian Zhang,Bingxin Lu,Jin Zhai,Xungang Diao
Mesoporous tungsten trioxide (WO 3 ) and nickel oxide (NiO) electrochromic (EC) thin films have been fabricated by sol-gel method with assistant of tri-block copolymer [PEO 132 PEO 50 PEO 132 ] (F108). By controlling weight ratio of F108 and calcination temperatures, uniform and transparent mesoporous films are fabricated. Both WO 3 and NiO films are comprised by nanoparticles with diameters of ca .10 nm, mesopores with pore size of approximately 6 nm are distributed in the films. The thickness of the films are ca . 400 nm. The as-prepared films have ultra-fast switching time during EC redox reactions . Applied with positive and negative voltages of 40 s respectively, the coloration/bleaching time of WO 3 and NiO films are 5.7 s/2.3 s and 0.9 s/3.8 s, which is faster than that of comparative EC films fabricated by sol-gel method without F108 (coloration/bleaching time of WO 3 and NiO films are 17.5 s/14.5 s and 13.6 s/4.9 s) and EC films fabricated by magnetron sputtering method (coloration/bleaching time of WO 3 and NiO films are 29.4 s/21.3 s and 9.6 s/7.5 s). Quasi-solid state electrochromic device assembled with mesoporous WO 3 and NiO thin films has excellent EC performance, such as fast switching speed (3.2/1.1 s for coloration/bleaching time), large optical modulation of about 45% (at 600 nm), high coloration efficiency (130.8 cm 2 /C at the wavelength of 600 nm) and good cycle stability. These excellent properties are derived from mesoporous channels in the films. For the mesoporous channels can shorten the diffusion paths and make it easier for ions to transport in films.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2019
·
IF 2.722
Lingling Ding,Haijun Tao,Chuanxiang Zhang,Jiwei Li,Wenjun Zhang,Jiayue Wang,Jianjun Xue
The hole transport layer (HTL) free carbon based perovskite solar cells (Carbon PSC) are known for low cost, good stability and commercial manufacturing technology . Compared to the structure of traditional cells, the carrier transport performance between the absorber layer and the carbon electrode (CE) is poor. As an excellent P-type material, NiO has been doped in CE for obtaining a better performance of PSCs. However, NiO will inevitably reduce the conductivity of the CE due to the poor conductivity, thus failing to fully exploit the advantages of NiO in hole extraction. In this paper, rGO/NiO composites were successfully prepared by doping rGO with good conductivity, which not only improved the conductivity of the CE, but also ensured good hole extraction of the doped CE. The carrier transport in the cell was significantly improved, resulting in 32% increase in the short circuit current density (J sc ). The performance of perovskite solar cells was optimized by doping the CE, and the power conversion efficiency (PCE) of the cell was increased from 5.48% to 8.50%.
研究领域:
材料科学
·
能源技术
✓ 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）