Journal of Energy Storage
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2024
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IF 8.9
Wang Hanbo,Pei Dongyu,Wan Sheng,Wang Ziming,Fan Zhitian,Tian Yumei,Li Kechang,Lu Haiyan
We initially proposed a facile one-step electrodeposition method utilizing Cyclic Voltammetry (CV) for the growth of NiO nanospheres (NiO-NSs) on three-dimensional nickel foam (NF) substrates. Notably, no binders, templates, or surfactants were introduced throughout the entire experimental process, ensuring the cleanliness and environmental friendliness of the synthesis process. The reaction parameters were successfully fine-tuned to achieve efficient in-situ growth, porous structure, and uniform morphology. The resulting optimized electrodes underwent characterization using diverse microscopic techniques. Subsequently, the electrochemical performance was analyzed in both half and full cell configurations. The obtained porous electrode materials in-situ grown on NFs exhibited a distinct nanosphere morphology with an average diameter of approximately 200 nm. The NiO-NSs exhibited satisfactory electrochemical performance in three-electrode system, demonstrated an enhanced specific capacitance of 438.2C g −1 (876.4 F g −1 ) at 1 A g −1 , highlighting their exceptional electrochemical performance. Furthermore, the assembled supercapacitor with NiO-NSs and activated carbon yielded a significantly high energy density of 37.71 Wh kg −1 and a power density of 246.38 W kg −1 at 1 A g −1 . More significantly, the outstanding capacity retention was 81.27 % after 45,000 continuous GCD cycles. This study offered novel insight into a facile synthesis method, utilizing CV electrodeposition for designing high-performance metal oxide or hydroxide materials, ultimately boosting electrochemical performance.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
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IF 7.46
Chaoge Zhou,Fanqi Meng,Ke Chen,Xueli Yang,Tianshuang Wang,Peng Sun,Fangmeng Liu,Xu Yan,Kengo Shimanoe,Geyu Lu
In this work, we successfully prepare the octahedral NiO/Zn 2 SnO 4 p-n heterostructure by a simple hydrothermal synthesis and subsequent wet impregnation process. The microscopic morphology characterization results show that the as-prepared composites are uniformly dispersed and have an octahedral structure with a size of 3−5 μm. The gas devices are fabricated and their sensing performances are investigated systematically. The response and selectivity of NiO/Zn 2 SnO 4 composites to acetone have been significantly improved than that of pure Zn 2 SnO 4 . Moreover, the response of the sensor to 100 ppb acetone is 1.4 at 300 °C, indicating that the detection limit is less than 100 ppb. The enhancement in sensing properties of composites is largely due to the p-n heterojunction formed by NiO and Zn 2 SnO 4 , which causes the transfer of carriers and the catalytic effect of NiO.
研究领域:
材料科学
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传感器技术
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
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2018
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IF 6.945
Zhibin Pang,Jialong Duan,Yuanyuan Zhao,Qunwei Tang,Benlin He,Liangmin Yu
High-temperature supercapacitors with enhanced charge transportation and capacitances are promising to meet specific requirements for underhood automotive component, oil drilling , military and space applications. However, state-of-the-art supercapacitors are always operated at room temperature due to the thermal instability of the hydrous electrolytes and organic separators. Herein, we present the fabrication of a high-temperature supercapacitor tailored by a ceramic NiO/ZrO 2 separator. This supercapacitor has a working temperature up to 140 °C, a capacitance of 342 F g -1 at current density of 2 A g −1 and good cycling stability over 2000 cycles. The experimental realization of physical proof-of-concept high-temperature supercapacitors may provide new opportunities for markedly improving the capacity of energy storage systems .
研究领域:
材料科学
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能源技术
✓ 已验证
DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
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2015
·Vol. 17
·期 7
·5103-5108
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IF 4.493
Jian Zhi,Angran Chen,Houlei Cui,Yian Xie,Fuqiang Huang
Reducing light-induced e–h recombination is important for a dye sensitized solar cell (DSSC); the p-type NiO component in TiO2–NiO nanoparticles was reported to significantly decrease charge recombination, but its photovoltaic efficiency remains below 4% owing to a small surface area. In this work, we used a one-pot self-assembly process to fabricate flower-like mesoporous TiO2 decorated by NiO oxides, employing a pluronic polymer P123 as a structure directing and pore forming agent. The flower-like porous TiO2–NiO nanoparticles (F–TiO2–NiO NPs), possessing a high BET surface of 130 m2 g−1, are first used as a photoanode in DSSCs. These hybrid nanoparticles, decorated with NiO islands, are beneficial for improving photocurrent by increasing dye absorption and suppressing electron–hole recombination. The optimized F–TiO2–NiO NP anode (10 μm thick) achieved a power conversion efficiency of 8.20%, which is 26% and 47% higher than pristine flower-like TiO2 and commercially available P25 anodes, respectively. This efficiency is the highest among the reported TiO2–NiO hybrid anodes.
研究领域:
材料科学
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能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2024
·
IF 5.8
Weidong Nie,Yuanyuan Liu,Jing Li,Meiri Wang,Kaihua Liu,Hongtao Cui
In this work, we choose NiO as an example of battery-type materials. We reveal that the electrochemical destabilization of NiO is attributed to the particle merging caused by electrochemical Ostwald ripening. Based on this understanding, we construct a particulate NiO-composed 2D structure coated by a thin carbon layer. Due to the prevention of particle merging by carbon coating and the increase of electrical and ionic conductivities by oxygen vacancies, this structure presents high electrochemical performance and an ultra-long cycling life. This carbon-coated 2D structure of NiO has a high specific capacity of 437.8 C g −1 at low current density and presents excellent high-rate performance (capacity retention of 66% at high current density). It exhibits ultra-high electrochemical stability (capacity retention of 93.5% after an ultra-long cycling of 100,000 cycles). This work demonstrates the success of carbon modification strategy for NiO, also may provide a significant outlet for transforming low-performance battery-type materials into high-performance materials.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2017
·
IF 13.942
Jie Yin,Yuxuan Li,Fan Lv,Qiaohui Fan,Yong-Qing Zhao,Qiaolan Zhang,Wei Wang,Fangyi Cheng,Pinxian Xi,Shaojun Guo
The development of highly efficient bifunctional catalysts for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) is crucial for improving the efficiency of the Zn–air battery. Herein, we report porous NiO/CoN interface nanowire arrays (PINWs) with both oxygen vacancies and a strongly interconnected nanointerface between NiO and CoN domains for promoting the electrocatalytic performance and stability for OER and ORR. Extended X-ray absorption fine structure spectroscopy, electron spin resonance, and high-resolution transmission electron microscopy investigations demonstrate that the decrease of the coordination number for cobalt, the enhanced oxygen vacancies on the NiO/CoN nanointerface, and strongly coupled nanointerface between NiO and CoN domains are responsible for the good bifunctional electrocatalytic performance of NiO/CoN PINWs. The primary Zn–air batteries, using NiO/CoN PINWs as an air–cathode, display an open-circuit potential of 1.46 V, a high power density of 79.6 mW cm–2, and an energy density of 945 Wh kg–1. The three-series solid batteries fabricated by NiO/CoN PINWs can support a timer to work for more than 12 h. This work demonstrates the importance of interface coupling and oxygen vacancies in the development of high-performance Zn–air batteries.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Omega
·
2022
·
IF 4.132
Xuhe Zhan,Feiyu Gao,Qianyu Zhuang,Yani Zhang,Jie Dang
In this work, a two-dimensional porous structure of a V-doped NiO film with excellent electrochromic properties on an ITO substrate was synthesized by a hydrothermal method. The influence of V5+ ions on the NiO film was explored by adjusting the amount of V doping, including refining the crystal grains, increasing the specific surface area of the film, and accelerating the diffusion rate of OH– in the film. Compared with the undoped NiO film, a 3 atom % V-doped NiO film comes out with superior electrochromic properties with large optical transmittance modulation (81.9% at 600 nm), fast response times (1.2 and 0.9 s), and excellent cycle stability (90.6%). This work creates innovation direction in the field of intelligent energy-saving window materials with high electrochromic properties.
研究领域:
材料科学
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能源材料
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Shuai Nie,Jing Li,Yunxia He,Xitao Yin
Gas sensors with the p–n heterojunction have demonstrated distinct sensing responses to reducing gases, yet a clear understanding of the reaction pathways and selective adsorption mechanisms for specific gas components remains elusive, impeding practical applications. In this study, we constructed an atomic-level NiO–In 2 O 3 heterojunction and explored its adsorption behaviors and sensing properties for CO and H 2 by first-principles calculations. Analysis of its electronic properties, focusing on binding energy, differential charge density, and density of states, confirmed the creation of a highly stable NiO–In 2 O 3 heterojunction and alterations in the coordination environment of the surface-active atoms. These changes potentially led to differences in the affinity between the gas molecules and the adsorption sites. The calculations of the adsorption properties revealed that the adsorption capacity of H 2 is relatively weak compared to the strong interactions between CO and heterojunction surface atoms, indicating a readily variable reaction pathway for H 2 . Consequently, the adsorption configuration at the interface site on the NiO–In 2 O 3 heterojunction surface exhibited a predominantly p-type response for CO and a unique n-type response for H 2 . This interfacial effect of the heterojunction is crucial for the selective adsorption of CO and H 2 . Furthermore, the opposite response signal was verified by gas sensing tests, which also presented the superior stability of the NiO–In 2 O 3 sensor. The p–n heterojunction of the corresponding composites was effectively characterized. This research offers new insights into the selective adsorption mechanism, paving the way for the development of gas sensors.
研究领域:
材料科学
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传感器技术
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理论计算
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2020
·
IF 2.726
Yafei Guo,Guodong Wang,Xi Yao,Bingqian Liu
Several NiO–CuO–CeO 2 catalysts were prepared via different methods and characterized by different techniques. Structure-activity relationships of the catalysts were demonstrated, and the effect of preparation methods on CO oxidation behaviors was illustrated. Catalytic results evidenced that the NiCuCe-CP and NiCuCe-SG catalysts prepared by co-precipitation and sol-gel methods exhibited better CO oxidation activities and kinetic performance, as evidenced by their lower T 50 values (102 °C and 100 °C) and apparent activation energies (48.80 and 59.28 kJ/mol) as well as higher reaction rates (3.84 and 3.45 μmol/g/s). The XRD and HRTEM results suggested that the active species showed uniform dispersion with minimum crystallite size in the desired catalysts. The XRD, XPS , H 2 -TPR and Raman analysis suggested the formation of Ce 1- x Cu x O 2- δ and Ce 1- x Ni x O 2- δ solid solutions, indicating that the co-precipitation and sol-gel methods reinforced the interactions amongst the ternary metal oxides . This would afford the catalysts more oxygen vacancies for boosted CO oxidation activity. The mechanism was then proposed with the dual synergetic effects in solid solutions for facilitated oxygen mobility and the amorphous active metal oxides for promoted CO chemisorption . The desired NiCuCe-CP and NiCuCe-SG catalysts show potential application for CO abatement in closed-loop air revitalization.
研究领域:
催化化学
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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
ADVANCED POWDER TECHNOLOGY
·
2020
·
IF 4.217
Chonghai Deng,Hanmei Hu,Hong Yu,Man Wang,Mengyi Ci,Lili Wang,Sane Zhu,Yiping Wu,Huirong Le
One-dimensional (1D) hierarchically structured CdS nanoparticles (NPs)/NiO nanofibers (NFs) heterostructures with remarkable removal efficiency for diazo dye Congo red (CR) were fabricated by a stepwise synthesis process, which was involved a chemical bathing deposition combined with calcination, and a microwave-assisted wet chemical reaction. The crystal phases, morphologies, optical absorption properties, and adsorption/photocatalytic activity of as-prepared products were investigated by XRD, FESEM, TEM, high-resolution TEM (HRTEM), N 2 adsorption/desorption isotherms, UV–Vis diffuse reflectance spectroscopy (DRS) and photoluminescence (PL) spectrum respectively. The experimental results indicated that binary satellite- core CdS NPs/NiO NFs heterojunctions are comprised of n-type CdS NPs with size of 10–30 nm decorated onto 1D p-type NiO NFs with diameter of 60–180 nm and length up to microns, which are self-assembled by nanoparticles with 30–100 nm in size. The possible formation mechanism for satellite-core structured CdS/NiO heterojunction is proposed. Interestingly, the decolorization efficiency over CdS/NiO heterostructures reached up to 91.2% in removal of aqueous CR at high concentration within 40 min under visible light irradiation, which was approximately 5.2 and 3.8 times as high as that of pure CdS nanocrystals (NCs) and the mixture of NiO NFs and CdS NCs. Furthermore, the possible photocatalytic mechanism was also investigated. The as-designed hybrid CdS NPs/NiO NFs heterostructures exhibited improved photocatalytic activity, which is attributed to the enhancement of the visible light adsorption, the efficient separation of photogenerated electrons and holes, and the high adsorption capacity towards CR molecules, thereby displaying superior visible- light-driven photodegradation of CR in high concentration. This work may provide a green engineering heterojunction technology to develop the advanced multifunctional nanocomposites for their applications in wastewater purification.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
ANALYST
·
2025
·
IF 3.3
Sihua Wu,Jinhui Zou,Baohua Zhang,Jiantian Lu,Guan Rong Lin,Yuwei Zhang,Li Niu
Nickel oxide (NiO) nanozyme, as an excellent oxidase mimic, have been widely used in fluorescence biological detection, water pollutant analysis, food safety and cell imaging. However, to fully achieve these applications, it is still a great challenge to regulate its crystalline micro/nanostructure and composites to achieve high enzyme activity and high specific surface area. Here, we applied a very simple thermal annealing treatment to restructure the calcined precursor of NiO. Importantly, it was found that oxygen vacancy (OV) concentration of the targeted NiO nanozyme is significantly increased while the annealing atmosphere is argon rather than air. Moreover, the as-prepared novel NiO sample (NiO-OV) nanosheets achieved ca. 2-fold enhancement in specific surface area. It is believed that the higher OV concentration and the larger specific surface area will increase the enzyme activity by accelerating electron transfer rate and increasing catalytic interfaces. The significant improvement of enzyme activity of NiO-OV was verified by the fluorescence "turn-on" experiment of Amplex red (AR). Finally, using NiO-OV/AR system, we constructed a highly sensitive enzyme sensor on L-Cys with a detection limit of 37.8 nM. It also displayed an excellent specificity for ten typical amino acid interferences.
研究领域:
生物医学工程
·
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Physical Chemistry C
·
2023
·
IF 3.7
Chencheng Ye,Susu Bi,Pengfei Liao,Yanni Huang,Xiao Lin,Yu Wang,Linjuan Zhang,Jian-Qiang Wang
An efficient and stable NiO-8YSZ hydrogen electrode for solid oxide cells (SOCs) is vital in the context of increasing global intermittent renewable energy sources. Most fundamental studies of SOCs have been carried out using button cells with small active areas, whereas the screen-printing of NiO-8YSZ hydrogen electrodes required for large-area SOCs have been ignored. In this study, we provide an alternative method for designing a highly active and stable fuel electrode for SOCs application by improving the slurry dispersant effect. The dispersion states and stabilities of NiO-8YSZ screen-printing slurries were quantitatively analyzed using the instability index, relaxation time, and viscosity. Scanning electron microscopy images of the resultant films indicate that the microstructure can be improved by optimizing the dispersants within the ink. The electrochemical performance of the resulting SOCs with optimized hydrogen electrode microstructures was examined at a 5 × 5 cm2 scale (16 cm2 active area). Single cells delivered a peak power density of 0.57 W·cm–2 at 750 °C in fuel cell mode and had a high current density of −0.81 A·cm–2 at 1.30 V in electrolysis mode. These results highlight the potential for large-scale high-performance SOCs production by designing NiO-8YSZ electrode nanostructures via a proper dispersant with the stability of screen-printing paste.
研究领域:
材料科学
·
能源工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）