Energies
·
2024
·Vol. 17
·期 19
·4769
·
IF 3
Osama A. Marzouk
The aim of this study is to quantitatively describe the anticipated change in the energy mix of the Sultanate of Oman (Oman) as the country moves forward in its national plan for green hydrogen, in order to become a global producer and exporter. This aim is achieved by curating recent data about energy projects in Oman that are either operating or planned (in a construction or pre-construction stage). Then, these data are processed further to extract useful insights about how the energy mix would change if the planned projects are realized and added to the operating ones. This reveals the serious commitment of the country to accomplish its national plan for green hydrogen (GH), where the green hydrogen production ambition for 2030 is about 1.125 million tons per annum (Mtpa), using a renewable energy capacity of approximately 18 GW. This ambition increases to about 3.5 Mtpa with approximately 70 GW of renewables in 2040, and increases further to about 8 Mtpa with approximately 180 GW of renewables in 2050. As a portrait of Oman’s energy mix with the assumption of successfully completing all planned energy projects, we found that the country is expected to have a total capacity of 83.1271 GW, with the share of renewables (solar and wind) reaching 83.133% (as compared to 15.0711 GW with an 8.907% renewables share for operating projects). Nearly all (precisely 99.571%) of the 68.0560 GW planned national energy capacity additions are based on solar or wind energy, while the traditional oil–gas energy is gradually phased out. Green hydrogen production dominates this surge in renewables penetration within the Omani energy mix, with 84.659% of the planned 34.3140 GW solar capacity additions linked with green hydrogen production, for operating water electrolyzers. Similarly, 98.804% of the planned 33.4500 GW wind capacity additions are linked with green hydrogen production.
研究领域:
能源研究
·
环境科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Haijun Huang,Haowei Tu,Hongjuan Xu,Peilei Shi,Donghong Wang
Harnessing renewable metal fuels to supplement conventional bio-mass energy supply in certain areas is steadily demanded under the current global energy policy of CO 2 emission reduction. The Al-to-power of a semi-cycle phase in the renewable conception by hydrolysis in aluminum-based metallic materials is viewed promising, yet surficial oxidation of aluminum matrices and the reaction by-products always deactivate the materials. Ultrasound induction in the hydrolysis process is proposed as an effective route to maintain a high-hydrolysis activity, but the trials on metallic materials are still blank. This article addresses the ultrasound accelerated hydrolysis of a representative aluminum-based metallic material, and the process was in-situ explored by high-speed photography to unravel the mechanism along with numerical modelling. The result shows that ultrasound fractures the particle material and exfoliates the reaction by-product layer to instantly expose more fresh aluminum, resulting in accelerated hydrogen generation . Using these discoveries, the employment of ultrasound in exploiting the hydrolysis of Al-based materials to meet the renewable metal-fuel demand is anticipated.
研究领域:
可再生能源
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Catalysts
·
2024
·Vol. 14
·期 5
·307
·
IF 3.8
Congying Liu,Bing Lin,Hailong Zhang,Yingying Wang,Hangzhou Wang,Junlei Tang,Caineng Zou
HighlightsWhat are the main findings?Square-wave power has the greatest influence on Ni cathode HER compared to step- and triangle-power.Increasing the amplitude of square-wave power enhances coated cathode’s degradation.What is the implication of the main finding?Guidance for industrializing hydrogen production via renewable energy-coupled electrolytic water.Evaluation theory of cathode materials in electrolytic water.AbstractThe combination of water electrolysis and renewable energy to produce hydrogen is a promising way to solve the climate and energy crisis. However, the fluctuating characteristics of renewable energy not only present a significant challenge to the use of water electrolysis electrodes, but also limit the development of the hydrogen production industry. In this study, the effects of three different types of waveforms (square, step, and triangle, which were used to simulate the power input of renewable energy) on the electrochemical catalysis behavior of Ni plate cathodes for HER was investigated. During the test, the HER performance of the Ni cathode increased at first and then slightly decreased. The fluctuating power led to the degradation of the Ni cathode surface, which enhanced the catalysis effect by increasing the catalytic area and the active sites. However, prolonged operation under power fluctuations could have damaged the morphology of the electrode surface and the substances comprising this surface, potentially resulting in a decline in catalytic efficiency. In addition, the electrochemical catalysis behavior of the prepared FeNiMo-LDH@NiMo/SS cathode when subjected to square-wave potential with different fluctuation amplitudes was also extensively studied. A larger amplitude of fluctuating power led to a change in the overpotential and stability of the LDH electrode, which accelerated the degradation of the cathode. This research provides a technological basis for the coupling of water electrolysis and fluctuating renewable energy and thus offers assistance to the development of the “green hydrogen” industry.
研究领域:
能源科学
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材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
·
2025
·
IF 2
Huilong Xu,Yi Xu,Qian Zhang,Qianli Zhang,Jie Liu,Haidong Bian
The methanol oxidation reaction (MOR) serves as a significant supplementary technique in the overall water splitting process and is recognized as a promising strategy for reducing the potential required to generate renewable hydrogen energy. This study presents the development of cost-effective and easily fabricated copper-based electrocatalysts through a straightforward anodization method. The resulting Cu-based electrocatalyst has been employed to evaluate the efficacy of the MOR in enhancing the water splitting process. Notably, the performance of the synthesized Cu2O/CuO electrocatalyst demonstrates a substantial improvement in the required overpotential, decreasing from 425 mV in 1.0 M KOH to 212 mV in 1.0 M KOH and 1.0 M methanol, to achieve a current density of 10 mA cm-2. The present work presents us a new way to reduce the necessary potential for the overall water splitting process using affordable Cu-based catalysts.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
CRYSTENGCOMM
·
2025
·Vol. 27
·期 5
·678-686
·
IF 2.6
Dongling Xie,Jianan Wang,Bo Huang,Yiyi Yang,Dunmin Lin,Chenggang Xu,Fengyu Xie
Rational design of viable routes to develop affordable and efficient oxygen evolution reaction (OER) catalysts is essential for advancing electrochemical water splitting, yet significant challenges remain, particularly in seawater. Here, we propose a ligand defect engineering strategy to modify the electronic structure of NH2-MIL-88B(Fe) using a monodentate ligand (acetic acid, AcOH), inducing ligand vacancies in NH2-MIL-88B(Fe) for oxygen evolution in an alkaline seawater electrolyte, thereby improving the performance of the electrocatalysts. The resulting defective MOFs (denoted as NH2-MIL-88B(Fe)-x) exhibited exceptionally high catalytic activity for OER, requiring low overpotentials of 313 and 329 mV at a current density of 100 mA cm−2 in 1 M KOH and simulated seawater (1 M KOH + 0.5 M NaCl) solutions, respectively. Experimental analyses revealed that the introduction of AcOH can modulate the d-band center of active sites in NH2-MIL-88B(Fe)-x and play a critical role in alleviating chloride ion (Cl−) corrosion, thereby enhancing catalytic stability in seawater. When directly used as an OER catalyst in an alkaline electrolyte, wind and solar power were harnessed to operate the NH2-MIL-88B(Fe)-x || Pt/C configuration to drive the electrolytic water reaction. Thus, the ligand defect strategy can be employed to design and prepare high-performance OER electrocatalysts, particularly for generating H2 through water electrolysis powered by renewable energy sources.
研究领域:
材料科学
·
电化学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2019
·
IF 15.548
Jia Li,Kang Liu,Tianpeng Ding,Peihua Yang,Jiangjiang Duan,Jun Zhou
Harvesting environmental thermal energy from a natural evaporation process is a promising method for acquiring renewable and sustainable energy. Here, we present an evaporation-driven water flow nanogenerator based on a piece of flexible carbon nanoparticle film. The open-circuit voltage of one single-piece device can be tuned from − 3 to 3 V by manipulating the surface functional groups on the carbon nanoparticles. The effects of different modification molecules and solution concentrations were also investigated. By combining the modified carbon films with opposite surface charges, we enhanced the output of the generator to a maximum open-circuit voltage of 5 V and a short-circuit current of 1.5 μA with a film size of 5 cm × 5 cm. Furthermore, the device can be easily integrated with carbon nanotube-based supercapacitors (CNT-SCs) to assemble the energy-storing and energy-harvesting devices into a self-sustaining power system . The electrical output of the device can directly power a liquid crystal display in an ambient environment and a blue LED with help of self-charged built-in SCs. This eco-friendly device, with its low cost and simple fabrication, shows great potential for future clean energy utilization and for extending the field of portable electronics.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2025
·
IF 3.7
Cunxiao Wang,Yue Tian,Yonghang Yu,Liang Wang,Guangmiao Qu,Shengyang Yang
Enhancing wastewater treatment efficiency through innovative technologies is paramount in addressing global environmental challenges. This study explores utilizing stereoscopic hydrogel evaporators combined with renewable energy sources to optimize wastewater treatment processes. A cross-linked super absorbent polymer (SAP) hydrogel was synthesized using acrylic acid and 2-hydroxyethyl methacrylate monomers and integrated with a light-absorbing carbon membrane to form a solar-assisted evaporator (MSAP). The MSAP achieved a high evaporation rate of 3.08 kg·m –2 ·h –1 and a photothermal conversion efficiency of 94.27%. It demonstrated excellent removal efficiency for dye-polluted wastewater, significantly reducing concentrations of pollutants. The MSAP maintained high performance in outdoor conditions, showcasing its potential for real-world applications. This approach, incorporating both solar and wind energy, significantly boosts water evaporation rates and presents a promising, eco-friendly solution for sustainable wastewater treatment within the circular development framework.
研究领域:
环境科学
·
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 45
·24345-24352
·
IF 14.511
Shuo Xiang,Arshad Khan,Zeyan Zhou,Bingling He,Xin Wang,Binju Wang,Qunhong Weng
Green hydrogen is an ideal and zero-pollution fuel that can be obtained using solar and other renewable energies. The efficient photocatalytic production of hydrogen mainly relies on the development of high-performance photocatalysts. In this work, we report the synthesis and photocatalytic hydrogen evolution application of a 2D coordination nanosheet (CONASH) constructed from bis-terpyridine ligands (Tpy) and Zn ions, which revealed an optical bandgap of 1.70 eV and exhibited excellent photocatalytic hydrogen-production performances of 3.10 mmol h−1 g−1 and 11.84 mmol g−1 h−1 under N2 and CO2 atmospheres, respectively. Such high photocatalytic hydrogen evolution rates are among the top tier in noble metal-free coordination complexes, providing a new way for designing hydrogen evolution photocatalysts based on highly structure- and band-adjustable 2D CONASHs.
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
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2024
·
IF 3.5
Ziyong Li,Mengnan Qin,Yanzhou Lei,Shuang Gao
Due to the depletion of fossil fuels, extensive CO 2 emissions, and growing demand for electrochemical energy, it is important to develop further utilization of renewable energy, as well as advanced energy storage techniques. To this end, the optically chargeable supercapacitor, which can convert the photon energy of solar light into electrochemical energy and store it for long-term usage, attracts extensive investigations. Among these, heterojunction construction was revealed as an effective method to enhance capacity. Recent works have reported the implementations of precipitation in ceramics, where the introduced matrix-precipitate two-phase structure is inspiring for constructing heterojunction, whereas it was seldom reported. In this work, Li-doped NaNbO 3 electrode material was prepared by adopting a multi-step solid reaction to precipitate LiNbO 3 and construct LiNbO 3 /NaNbO 3 heterojunctions. The electrochemical measurement demonstrates an enhanced optically chargeable capacity of roughly 85% increase at a scan rate of 1 mV/s and a four-fold increase at a charging–discharging current density of 1 A/g, as well as outstanding stability by introducing precipitates and constructing heterojunctions. This finding proposes a novel methodology design of heterojunction construction via precipitation to enhance the optically chargeable capacity of supercapacitor electrode materials and, therefore, may open up a potentially new application field for precipitate-tuned functionality in functional ceramics.
研究领域:
材料科学
·
能源存储
·
电化学
·
可再生能源
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yanmei Huang,Yuting Wang,Yang Liu,Aijing Ma,Jianzhou Gui,Chaoxin Zhang,Yifu Yu,Bin Zhang
Electrochemical synthesis of urea from carbon dioxide and nitrogenous species is a promising sustainable strategy, which can be easily incorporated into distributed renewable energy systems. However, a low concentration of urea produced in a complex solution environment brings challenges to its accurate quantification. Here an overall comparison (e.g., accuracy, reliability, anti-interference ability) of the frequently-used determination methods is provided after considering the potential interference factors. Besides, a rigorous urea detection flowchart and a recommended standard are established to achieve a more accurate and responsible performance evaluation in electrocatalytic urea production. This work guides the reliable quantification in urea synthesis, especially at a low concentration within a complicated electrocatalytic system.
研究领域:
电化学
·
催化
·
可持续化学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-11
·
IF 14.7
Xue Jing,Dong Xue,Liu Chunxiao,Li Jiawei,Dai Yizhou,Xue Weiqing,Luo Laihao,Ji Yuan,Zhang Xiao,Li Xu,Jiang Qiu,Zheng Tingting,Xiao Jianping,Xia Chuan
Using renewable electricity to convert CO 2 into CO offers a sustainable route to produce a versatile intermediate to synthesize various chemicals and fuels. For economic CO 2 -to-CO conversion at scale, however, there exists a trade-off between selectivity and activity, necessitating the delicate design of efficient catalysts to hit the sweet spot. We demonstrate here that copper co-alloyed with isolated antimony and palladium atoms can efficiently activate and convert CO 2 molecules into CO. This trimetallic single-atom alloy catalyst (Cu 92 Sb 5 Pd 3 ) achieves an outstanding CO selectivity of 100% (±1.5%) at −402 mA cm −2 and a high activity up to −1 A cm −2 in a neutral electrolyte, surpassing numerous state-of-the-art noble metal catalysts. Moreover, it exhibits long-term stability over 528 h at −100 mA cm −2 with an FE CO above 95%. Operando spectroscopy and theoretical simulation provide explicit evidence for the charge redistribution between Sb/Pd additions and Cu base, demonstrating that Sb and Pd single atoms synergistically shift the electronic structure of Cu for CO production and suppress hydrogen evolution. Additionally, the collaborative interactions enhance the overall stability of the catalyst. These results showcase that Sb/Pd-doped Cu can steadily carry out efficient CO 2 electrolysis under mild conditions, challenging the monopoly of noble metals in large-scale CO 2 -to-CO conversion.
研究领域:
材料科学
·
化学工程
·
电化学
·
可持续能源
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Frontiers of Chemical Science and Engineering
·
2021
·Vol. 16
·期 4
·498-510
·
IF 4.204
Bo Jinxiao,Li Mei,Zhu Xinli,Ge Qingfeng,Han Jinyu,Wang Hua
The electrochemical conversion of CO 2 -H 2 O into CO-H 2 using renewable energy is a promising technique for clean syngas production. Low-cost electrocatalysts to produce tunable syngas with a potential-independent CO/H 2 ratio are highly desired. Herein, a series of N -doped carbon nanotubes encapsulating binary alloy nanoparticles (M x Ni-NCNT, M= Fe, Co) were successfully fabricated through the co-pyrolysis of mela-mine and metal precursors. The M x Ni-NCNT samples exhibited bamboo-like nanotubular structures with a large specific surface area and high degree of graphitization. Their electrocatalytic performance for syngas production can be tuned by changing the alloy compositions and modifying the electronic structure of the carbon nanotube through the encapsulated metal nanoparticles. Consequently, syngas with a wide range of CO/H 2 ratios, from 0.5:1 to 3.4:1, can be produced on M x Ni-NCNT. More importantly, stable CO/H 2 ratios of 2:1 and 1.5:1, corresponding to the ratio to produce biofuels by syngas fermentation, could be realized on Co 1 Ni-NCNT and Co 2 Ni-NCNT, respectively, over a potential window of −0.8 to −1.2 V versus the reversible hydrogen electrode. Our work provides an approach to develop low-cost and potential-independent electrocatalysts to effectively produce syngas with an adjustable CO/H 2 ratio from electrochemical CO 2 reduction.
研究领域:
材料科学
·
电化学
·
可再生能源
·
催化
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）