Energy technology最新文献

A Proof-of-Concept Membrane Module Concept for Solar Thermal Water Splitting Using Oxygen Transport Membranes 利用氧气传输膜进行太阳能热水分解的膜组件概念验证

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-06-22 DOI: 10.1002/ente.202402191

Christopher Hall, Falk Schulze-Küppers, Kai Bittner, Bernd Büddefeld, Nikolaos Margaritis, Jörg Wolters, Sonja Groß-Barsnick, Juan Pablo Rincon Duarte, Nicole Carina Neumann, Ghaleb Natour

{"title":"A Proof-of-Concept Membrane Module Concept for Solar Thermal Water Splitting Using Oxygen Transport Membranes","authors":"Christopher Hall, Falk Schulze-Küppers, Kai Bittner, Bernd Büddefeld, Nikolaos Margaritis, Jörg Wolters, Sonja Groß-Barsnick, Juan Pablo Rincon Duarte, Nicole Carina Neumann, Ghaleb Natour","doi":"10.1002/ente.202402191","DOIUrl":"https://doi.org/10.1002/ente.202402191","url":null,"abstract":"Solar thermal water splitting using oxygen transport membranes enables sustainable hydrogen production and can thus play a key role in the emerging hydrogen economy. Membrane reactors potentially reduce temperature required by shifting the concentration equilibrium, thereby increasing the efficiency of thermal water splitting. This work presents a scaled-up proof-of-concept (PoC) module design for solar thermal water splitting applications utilizing oxygen transport membranes in relevant environments. The PoC module is based on a flexible and scalable stack design with parallel-oriented, membrane-containing layers, which supports the scalability of the concept. Solar heat integration is optimized for direct irradiation by a High Flux Solar Simulator. Key outcomes include focal point adjustments and design modifications using an irradiated copper plate to mitigate hot spots. The PoC module's material concept prevents thermal stresses and ensures gas-tight sealing of the membranes at an operating temperature of 850 °C under reducing and corrosive atmospheres. Optimal flow rates for steam (30–213 mmol min−1) and methane (8–54 mmol min−1) are calculated for the PoC module, resulting in efficient hydrogen (7–51 mmol min−1) and syngas (22–156 mmol min−1) production, using a membrane area of 167 cm2, with H2O and CH4 conversion rates of 25% and 95%, respectively.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ente.202402191","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145224188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fabrication of Organic Solar Cells from Surfactant-Free Aqueous Nanoparticle Dispersions 无表面活性剂纳米水分散体制备有机太阳能电池

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-06-21 DOI: 10.1002/ente.202500074

Karen Fischer, Florian Fichtelmann, Jan Bruder, Jonas Armleder, Holger Röhm, Alexander Colsmann

引用次数: 0

Performance of a Direct-Coupled Photovoltaic Water Pumping System Driven by Inclined North-South Axis Three-Position Solar Tracker 倾斜南北轴三位置太阳能跟踪器驱动的直接耦合光伏抽水系统性能研究

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-05-20 DOI: 10.1002/ente.202402383

Maogang Wu, Lulu Chen, Fang Li, Chuanbo Sun

{"title":"Performance of a Direct-Coupled Photovoltaic Water Pumping System Driven by Inclined North-South Axis Three-Position Solar Tracker","authors":"Maogang Wu, Lulu Chen, Fang Li, Chuanbo Sun","doi":"10.1002/ente.202402383","DOIUrl":"https://doi.org/10.1002/ente.202402383","url":null,"abstract":"Due to the complexity of traditional continuous tracking mechanisms, most installations for small-scale photovoltaic water pump systems (PVWPS) are stationary and oriented due south. The aim of this study is to evaluate the performance of an affordable, easy-to-operate tracking method for small farmers to promote the sustainable use of photovoltaic energy. Experiments are conducted to evaluate the performance of small-scale PVWPS driven by inclined north-south axis three-position (INSA-3P) solar tracker, which requires only yearly four tilt adjustments and daily three azimuth adjustments. This INSA-3P photovoltaic (PV) system is respectively compared with a fixed system and a manual two-axis (2A) tracking mode under typical sunny conditions in Kunming throughout the year. Two identical systems for comparison both consist of a 100 W pump and a 100 W PV module. The findings in Kunming's climate reveal that the INSA-3P tracking system significantly outperforms the fixed system, achieving 1.56, 1.61, 1.75, and 1.60 times higher daily water pumping capacity during winter, spring, summer, autumn. It is worth noting that INSA-3P tracking PV system can be manually implemented by adjusting the module's orientation three times a day to follow the sun's path, yielding over 96% of the daily water pumping capacity of 2A tracking PV system.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145224245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Researches on the Growth of Lithium Deposition in Lithium-Ion Batteries During Long-Term Cycling of Slight Overcharging 轻度过充锂离子电池长期循环过程中锂沉积生长的研究

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-05-15 DOI: 10.1002/ente.202402168

Yizhuo Zhang, Yihui Liu, Panyun Wu, Yiping Wang

{"title":"Researches on the Growth of Lithium Deposition in Lithium-Ion Batteries During Long-Term Cycling of Slight Overcharging","authors":"Yizhuo Zhang, Yihui Liu, Panyun Wu, Yiping Wang","doi":"10.1002/ente.202402168","DOIUrl":"https://doi.org/10.1002/ente.202402168","url":null,"abstract":"In the entire life cycle of lithium-ion batteries, there may be long-term cycling of overcharging conditions. Therefore, a high-fidelity model that is analyzed for the physical characteristics of lithium-ion batteries during long-term cycling of overcharging conditions is required. Based on the pseudo-2D (P2D) model, a P2D with a variable solid-phase diffusion coefficient electrochemical model is built. This model is used to study the changes in the physical properties of automotive lithium-ion batteries, including the relative capacity, the generation of lithium metal deposition, and solid electrolyte interface (SEI) film. The SEI film and lithium deposition of lithium-ion batteries have been analyzed under different charge/discharge rates and values of overcharge conditions. It is found that the lithium plating is influenced by both the overcharged value and the charging current rate. Lithium metal deposition has a greater impact on the capacity fading of batteries than the generation of SEI films. There is competition between the generation of SEI films and that of the lithium metal deposition process, and lithium metal deposition inhibits the generation of SEI films. The lithium dendrite and SEI films always grow in parallel coupling.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145224295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Carbon-Doped NiCuMn Supercapacitor with Excellent Energy Storage and Rate Capability 具有优异储能和倍率性能的掺碳NiCuMn超级电容器

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-05-13 DOI: 10.1002/ente.202500260

Arunesh Kumar, Michael Lastovich, Bharat Gwalani, Harpreet Singh Arora

{"title":"Carbon-Doped NiCuMn Supercapacitor with Excellent Energy Storage and Rate Capability","authors":"Arunesh Kumar, Michael Lastovich, Bharat Gwalani, Harpreet Singh Arora","doi":"10.1002/ente.202500260","DOIUrl":"https://doi.org/10.1002/ente.202500260","url":null,"abstract":"Supercapacitors have gained prominence as a cutting-edge energy storage technology. However, the performance of conventional transition metal oxide electrodes is hindered by their poor electrical conductivity, insufficient ion-accessible surface area, and complex synthesis processes. Herein, a firsthand demonstration of carbon doping in a crystalline NiCuMn trimetallic alloy, followed by dealloying in an oxygen-rich environment, is presented. This process produces a highly uniform, 3D flaky nanoporous microstructure with exceptional electrochemical energy storage capabilities. The synthesized electrode demonstrates a remarkable specific capacitance of 1835 F cm−3 at an ultrahigh current density of 10 A cm−3 along with an excellent rate capability of ≈62%. In contrast, the carbon-free NiCuMn alloy shows 900 F cm−3 capacitance with only 35% retention under similar test conditions. A symmetric supercapacitor showcases an impressive energy density of 120.4 Wh L−1 at a power density of 850 W L−1. It also exhibits remarkable rate capability of ≈50% and excellent cyclic stability, maintaining 96.5% of its capacity after 10000 cycles. The exceptional performance of the developed electrode is attributed to its carbon-doped unique hierarchical microstructure that ensures efficient and rapid charge transport due to large surface area and high electrical conductivity.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145224292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

NH2–SiO2@Ti3C2Tx Core–Shell Nanostructures as Anode Materials for Li-Ion Batteries NH2 - SiO2@Ti3C2Tx核壳纳米结构作为锂离子电池负极材料

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-05-11 DOI: 10.1002/ente.202402417

Ming Yan, Haoyu Chen, Yu Zhu, Yuxiao Deng, Zhuanlong Yan, Ziyi Lu, Yanlin Chen

{"title":"NH2–SiO2@Ti3C2Tx Core–Shell Nanostructures as Anode Materials for Li-Ion Batteries","authors":"Ming Yan, Haoyu Chen, Yu Zhu, Yuxiao Deng, Zhuanlong Yan, Ziyi Lu, Yanlin Chen","doi":"10.1002/ente.202402417","DOIUrl":"https://doi.org/10.1002/ente.202402417","url":null,"abstract":"In this study, NH2–SiO2@Ti3C2Tx core–shell microspheres with different Ti3C2Tx contents are prepared by coating Ti3C2Tx nanosheets on the surfaces of SiO2 microspheres using an electrostatic self-assembly method. The structures, elemental compositions, and microscopic morphologies of NH2–SiO2@Ti3C2Tx microspheres are investigated by X-Ray diffraction, Fourier-transform infrared spectroscopy, field-emission scanning electron microscopy, and X-Ray photoelectron spectroscopy. The results show that Ti3C2Tx nanosheets are uniformly coated on the surfaces of the SiO2 microspheres, and the surfaces of the SiO2 microspheres are modified by NH2. The maximum specific surface area of NH2–SiO2@Ti3C2Tx composite doped with 15 wt% Ti3C2Tx is 29.937 m2 g−1, with an average pore size of 0.11848 cm3 g−1. The electrochemical performance test results show that after 100 cycles at a C rate of 0.2C, the specific capacity of the NH2–SiO2@Ti3C2Tx anode material increases by 270.1% compared to that of SiO2, reaching 142.5 mAh g−1. Compared with SiO2, the NH2–SiO2@Ti3C2Tx materials have higher electrical conductivities and Li ion diffusion rates, thereby improving their rate performances, and the discharge specific capacities and cycling stability are superior to those of the SiO2 anode material.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145224365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergistic Enhancements of Niobium Metal–Organic Framework/V2CTx Composites with Graphene Quantum Dots for Energy Storage and Hydrogen Evolution 石墨烯量子点协同增强铌金属-有机骨架/V2CTx复合材料的储能和析氢性能

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-05-07 DOI: 10.1002/ente.202402278

Summaira Khan, Ehtisham Umar, Muhammad Ashraf, Muhammad Arslan Sunny, M. Waqas Iqbal, Soumaya Gouadria, Abhinav Kumar, Nagappan Beemkumar, Akbar Mohammad

{"title":"Synergistic Enhancements of Niobium Metal–Organic Framework/V2CTx Composites with Graphene Quantum Dots for Energy Storage and Hydrogen Evolution","authors":"Summaira Khan, Ehtisham Umar, Muhammad Ashraf, Muhammad Arslan Sunny, M. Waqas Iqbal, Soumaya Gouadria, Abhinav Kumar, Nagappan Beemkumar, Akbar Mohammad","doi":"10.1002/ente.202402278","DOIUrl":"https://doi.org/10.1002/ente.202402278","url":null,"abstract":"MXenes have gained increasing attention due to their unique advantages, including exceptional electrical conductivity, tunable layer structures, and controllable interfacial chemistry. This study addresses these limitations by incorporating niobium metal–organic frameworks (Nb-MOF) onto vanadium carbide MXene (V2CTx) surfaces, enhancing energy storage and electrochemical water-splitting performance. Additionally, graphene quantum dots (GQDs) serve as dopants, significantly increasing the specific surface area and charge storage capacity. The optimized Nb-MOF/V2CTx@GQDs heterostructure exhibits a low hydrogen evolution reaction (HER) overpotential of 90.54 mV at 10 mA cm−2, with a Tafel slope of 103.45 mV dec−1, indicating enhanced charge transfer kinetics. For energy storage applications, the asymmetric Nb-MOF/V2CTx@GQDs//AC device achieves a high specific capacity of 320 C g−1 at 2.0 A g−1, an energy density (Ed) of 59 Wh kg−1, and a power density (Pd) of 1800 W kg−1, while maintaining 81.2% capacity retention and 87.5% Coulombic efficiency after 12 000 cycles. These findings demonstrate the synergistic effect of Nb-MOF and V2CTx, further enhanced by GQDs, establishing the composite as a promising material for next-generation energy storage and HER.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145224402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance Evaluation of Low-Grade Waste Heat Recovery for Power Generation via Thermoelectric Generators System of Different Configurations 不同配置热电发电系统低品位余热回收发电性能评价

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-05-06 DOI: 10.1002/ente.202402453

M. A. Mahmoud, Sameh Nada, Shinsuke Mori, Hamdy Hassan

{"title":"Performance Evaluation of Low-Grade Waste Heat Recovery for Power Generation via Thermoelectric Generators System of Different Configurations","authors":"M. A. Mahmoud, Sameh Nada, Shinsuke Mori, Hamdy Hassan","doi":"10.1002/ente.202402453","DOIUrl":"https://doi.org/10.1002/ente.202402453","url":null,"abstract":"Low-grade waste heat recovery (WHR) from steam turbines presents an opportunity to enhance energy efficiency and minimize losses in power plant. This study evaluates the perfromance of thermoelectric generator (TEG) configurations under varying steam parameters (mass flow rate, quality, temperature), to identify optimal configurations. A MATLAB- based numerical model integrating thermodynamics, heat transfer, and thermoelectric priniciples is devolped to simulate four TEG arrangements: 100 × 100, 50 × 200, 25 × 400, and 12 × 833 (longitudinal). Simulations span a wide range of steam conditions: flow rates (5–20 kg s−1), qualities (0.05–0.97), and temperatures (100–160 °C). Results shows that the longitudinal 12 × 833 configuration delivers the highest power output 15.62 kW at 20 kg s−1, x = 0.97, and 36.88 kW at 160 °C emphasizing temperature's critical role. System efficiency increases by 36% when temperature rises from 100 to 160 °C, while improving quality enhances by 8–12%. The heat utilization factor is highest at low steam qualities (x = 0.05), reaching 59.4% at 100 °C (5 kg s−1), but drops significantly at higher flow rates. Findings highlight the potential of longitudinal TEG arrangements to maximize WHR through enhanced latent heat extraction and thermal gradient management.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145224440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Technical Approaches for Preparation of Cellulose-Based Separators for Application in Supercapacitors 超级电容器用纤维素基隔膜的制备技术研究

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-05-06 DOI: 10.1002/ente.202402365

Marina V. Lebedeva, Mariia A. Mozyleva, Valentin N. Parmon

引用次数: 0

Construction of Functional Carbon Nanoarchitectonics for Mitigating Shuttle and Boosting Conversion of Polysulfides in Lithium–Sulfur Batteries 用于减少锂硫电池中多硫化物穿梭和转化的功能碳纳米结构的构建

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-05-06 DOI: 10.1002/ente.202500153

Jiao Li, Yinglei He, Li Wang, Shixiang Yuan, Yang Bai, Junming Guo, Mingwu Xiang, Yan Zheng

{"title":"Construction of Functional Carbon Nanoarchitectonics for Mitigating Shuttle and Boosting Conversion of Polysulfides in Lithium–Sulfur Batteries","authors":"Jiao Li, Yinglei He, Li Wang, Shixiang Yuan, Yang Bai, Junming Guo, Mingwu Xiang, Yan Zheng","doi":"10.1002/ente.202500153","DOIUrl":"https://doi.org/10.1002/ente.202500153","url":null,"abstract":"Low-cost and high-quality functional porous carbon materials are highly considered as sulfur hosts for high-performance Li–S batteries. Herein, a functional porous carbon material is constructed using waste coffee shells and bimetallic salt activation/catalyst via facile mechanical agitation and high-temperature pyrolysis. An in situ nitrogen doping is easily achieved due to the inherent nitrogen-rich composition of coffee shells. After detailedly regulating the concentration of bimetallic salts, the optimal carbon material exhibits good nanoarchitectonics with ultrahigh specific surface area (2270 m2 g−1) and large pore volume (2.1 cm3 g−1). This is contributing to accelerating the electrolyte infiltration and intimate contact with active sulfur encapsulated into the pore architecture, while improving the redox conversion of polysulfides. Moreover, the polysulfides shuttle is effectively mitigated by the synergistic adsorption of porous structure and nitrogen doping. When used as sulfur host, the optimal cathode exhibits the initial discharge capacity of 928 mAh g−1 and retains 625 mAh g−1 after 200 cycles at 0.2 C. Even at 1.0 C, the first capacity of 721 mAh g−1 is still procured and the capacity decay per cycle for 1000 cycles is 0.03%.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145224438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0