Energy technology最新文献_第8页

Efficient Oxygen Evolution Reaction on Catalyst-Free Acid-Functionalized Plastic Chip Electrodes

IF 3.6 4区工程技术

Energy technology Pub Date : 2024-10-15 DOI: 10.1002/ente.202401259

Kirti, Rajeshree J. Bani, Krishnendu T. V., Gopala Ram Bhadu, Divesh N. Srivastava

{"title":"Efficient Oxygen Evolution Reaction on Catalyst-Free Acid-Functionalized Plastic Chip Electrodes","authors":"Kirti, Rajeshree J. Bani, Krishnendu T. V., Gopala Ram Bhadu, Divesh N. Srivastava","doi":"10.1002/ente.202401259","DOIUrl":"https://doi.org/10.1002/ente.202401259","url":null,"abstract":"Innovative electrode design is critical for improving the oxygen evolution reaction (OER) and meeting rising global energy demands. Despite the development of numerous carbon materials for water splitting, their potential is hampered by sluggish kinetics, primarily due to high activation energy compounded by various smaller factors, including additives or binders used in electrode modification. To address these limitations, a catalyst-free plastic chip electrode (PCE) for OER is developed. PCE is functionalized by oxidizing it in acidic media at 1.8 V versus Ag/AgCl and eliminates the need for additives, offering a more accurate industrial representation. The oxidation process enhances the electrode's surface area and introduces electrochemically active oxygen-containing functional groups. Characterization of the modified PCE is conducted using scanning electron microscope, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction, Raman, and thermogravimetric analysis, while electrolyte analysis utilizes UV–vis spectroscopy and NMR. The PCE oxidized for 6 h (PCE@6) demonstrates improved OER performance, with an onset overpotential of 260 mV, an overpotential of 1.06 V versus reversible hydrogen electrode at 10 mA cm−2, and a Tafel slope of 494 mV decade−1. The modified PCE reduces overpotential and minimizes bubble formation, enhancing efficiency and showcasing its potential as a cost-effective solution for alkaline water electrolysis systems.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565430","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

Cost-Effective Approach to Fabricate Oxide-Based Bulk Thermoelectric Generator for Low-Grade Waste Heat Harvesting 以经济高效的方法制造用于低品位废热收集的氧化物基散装热电发生器

IF 3.6 4区工程技术

Energy technology Pub Date : 2024-10-15 DOI: 10.1002/ente.202401340

Devang Anadkat, Anil Pandya, Shreya Dungani, Anmol Jaiswal, Nirali Patel, Chandrababu Badampudi, Anup V. Sanchela

{"title":"Cost-Effective Approach to Fabricate Oxide-Based Bulk Thermoelectric Generator for Low-Grade Waste Heat Harvesting","authors":"Devang Anadkat, Anil Pandya, Shreya Dungani, Anmol Jaiswal, Nirali Patel, Chandrababu Badampudi, Anup V. Sanchela","doi":"10.1002/ente.202401340","DOIUrl":"https://doi.org/10.1002/ente.202401340","url":null,"abstract":"Oxide materials are well explored in thermoelectric and optoelectronic device applications due to their wide range of tunable properties, thermal stability, compatibility with other materials, nontoxicity, and earth abundancy. As a result, it can often be integrated into devices, which facilitates the development of oxide-based thermoelectric generators at low cost. In this work, we synthesized BaxCoO2 and graphene-doped In2O3 by solid-state reaction route and then incorporated them in thermoelectric generator for the first time. A preliminary 3-couple device is designed on a glass substrate. Here, the unique aspect is that graphite paint is used for the first time to make contact between oxide and metal electrodes instead of earlier used soldering and diffusion techniques, which prevents metals from diffusing in the oxide matrix. This device generates an open-circuit voltage of 30 mV whereas it produces an output power of 0.3 μW with power density of ≈15.5 nW cm−2 for ΔT of 60 K, which is comparable to earlier reported metal-based Bi0.5Se1.5Te3/Bi2Se0.3Te2.7TE devices. Further, the physical dimensions of the generators can be adjusted and the temperature gradient can be increased to get the desired power. This work offers a promising strategy for the development of thick as well as thin thermoelectric generators at an affordable cost.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565433","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

Rational Design of Facile and Low-Cost Construction of Carbon-Based Dye-Sensitized Solar Cells using Garcinia Mangostana L. as a Photosensitizer

IF 3.6 4区工程技术

Energy technology Pub Date : 2024-10-12 DOI: 10.1002/ente.202401358

Erma Surya Pertiwi, Prastika Krisma Jiwanti, Ahmad Taufiq, Tahta Amrillah

{"title":"Rational Design of Facile and Low-Cost Construction of Carbon-Based Dye-Sensitized Solar Cells using Garcinia Mangostana L. as a Photosensitizer","authors":"Erma Surya Pertiwi, Prastika Krisma Jiwanti, Ahmad Taufiq, Tahta Amrillah","doi":"10.1002/ente.202401358","DOIUrl":"https://doi.org/10.1002/ente.202401358","url":null,"abstract":"Research on solar cell devices is not only always related to how to obtain high power conversion efficiency (PCE), but also other factors need to be fully considered, such as the cost and their ecofriendliness. In this present research, a low-cost and ecofriendly dye-sensitized solar cell (DSSC) is being developed using a graphite-based nanocomposite and an unusual plant extract (Garcinia mangostana L.) as the dye photosensitizer. A rational design on how to use graphite as a photoanode and counter electrode (CE) in DSSC is carried out by combining the graphite with ZnO and multiwalled carbon nanotube (MWCNT), respectively. It is observed that graphite acts as a matrix for ZnO and MWCNT to make these nanocomposites have very appropriate optoelectronics and catalytic properties compared to the control sample. Therefore, they could serve as an excellent photoanode and CE, respectively. It is also expected that the anthocyanin absorption in Garcinia mangostana L. dye which is found in the visible light range can efficiently absorb photons, thus supporting the enhancement of photovoltaic performance of the DSSC. The generated voltage (V) and current (I) from light irradiation using commercial lamps are higher compared to halogen lamps, indicating that the obtained DSSC has potential as indoor powered devices. It is believed that our study can shed light on the development of DSSC using low-cost material graphite as the main component for the realization of low-cost DSSC devices.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114356","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

Device Model for a Solid-State Barocaloric Refrigerator

IF 3.6 4区工程技术

Energy technology Pub Date : 2024-10-12 DOI: 10.1002/ente.202401057

Naveen Weerasekera, Huan Jiang, Yanyu Chen, Gamini Sumanasekera, Bikram Bhatia

{"title":"Device Model for a Solid-State Barocaloric Refrigerator","authors":"Naveen Weerasekera, Huan Jiang, Yanyu Chen, Gamini Sumanasekera, Bikram Bhatia","doi":"10.1002/ente.202401057","DOIUrl":"https://doi.org/10.1002/ente.202401057","url":null,"abstract":"Solid-state refrigeration represents a promising alternative to vapor compression cooling systems. Solid-state devices based on magnetocaloric, electrocaloric, and elastocaloric effects have demonstrated the ability to achieve high-efficiency, reliable, and environment-friendly refrigeration. Cooling devices based on the barocaloric (BC) effect—entropy change due to applied hydrostatic pressure, however, has not yet been realized despite the significant promise shown in material-level studies. As a step toward demonstrating a practical cooling system, this work presents a thermodynamic and heat transfer model for a BC refrigerator The model simulates transient thermal transport within the solid refrigerant and heat exchange with hot and cold thermal reservoirs during reversed Brayton refrigeration cycle operation. The model is used to evaluate the specific cooling power (SCP) and coefficient of performance (COP) of the device comprising nitrile butadiene rubber (NBR) as a representative BC refrigerant. Experimentally validated BC properties of NBR are used to quantify the contribution of different operating parameters including cycle frequency, applied pressure, operating temperatures, and heat transfer coefficient. The results show that a BC refrigerator operating with a temperature span of 2.4 K and 0.1 GPa applied pressure can achieve an SCP of 0.024 W g−1 at 10 mHz cycle frequency and a COP as high as 5.5 at 1 mHz cycle frequency—exceeding that of conventional vapor compression refrigerators. In addition, to identify key refrigerant properties, the effect of bulk modulus, thermal expansion coefficient, heat capacity, and thermal conductivity on device performance are quantified. The results highlight the trade-off between different material properties to maximize the BC response, while minimizing mechanical work and improving thermal transport. This work demonstrates the promise of solid-state cooling devices based on soft BC materials and provides a framework to quantify its performance at the device-level.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114357","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

Molecularly Modified Electrodes for Efficient Triboelectric Nanogenerators

IF 3.6 4区工程技术

Energy technology Pub Date : 2024-10-09 DOI: 10.1002/ente.202401029

Rachana I. Malekar, Rajashree M. Hodlur, Mohammad Hussain Kasim Rabinal

{"title":"Molecularly Modified Electrodes for Efficient Triboelectric Nanogenerators","authors":"Rachana I. Malekar, Rajashree M. Hodlur, Mohammad Hussain Kasim Rabinal","doi":"10.1002/ente.202401029","DOIUrl":"https://doi.org/10.1002/ente.202401029","url":null,"abstract":"The integration of organic molecules into monolayers on triboelectric layers and electrodes has significantly improved the performance of triboelectric nanogenerators (TENGs) in recent years. By modifying surfaces at the molecular level, one can enhance durability, power density, and cost-efficiency, leading to flexible, lightweight, and more efficient devices. A simple chemistry of organic monolayer formation allows a precise control over orientation, coverage, consistency, and functionality. These monolayers boost surface charge density and output voltage while influencing surface polarization and dipole interactions. This review focuses on recent advances in chemical modification of electrodes for controlling surface charge density and altering surface dipoles, emphasizing the significance of organic monolayers. A new concept of Schottky-based TENGs is also introduced that explores chemically modified sliding surfaces. Furthermore, the importance of flexoelectricity and its contribution to triboelectricity is discussed. By addressing current challenges and outlining future directions, this review underscores the crucial role of surface chemistry in advancing TENGs.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143113788","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

An Antiferroelectric-Coated Metal Foam Infiltrated with Liquid Metal as a Dielectric Capacitor

IF 3.6 4区工程技术

Energy technology Pub Date : 2024-10-07 DOI: 10.1002/ente.202400956

Brendan Hanrahan, Asher Leff, Alexis Sesar, Michael Fish, Samantha T. Jaszewski, Jaron A. Kropp, Nicholas Strnad, Jon F. Ihlefeld, Nathan Lazarus

引用次数: 0

Prediction of Ductile Damage in Composite Material Used in Type IV Hydrogen Tanks by Artificial Neural Network and Machine Learning with Finite Element Modeling Approach

IF 3.6 4区工程技术

Energy technology Pub Date : 2024-10-07 DOI: 10.1002/ente.202401045

Kheireddin Kadri, Achraf Kallel, Guillaume Guerard, Abir Ben Abdallah, Sébastien Ballut, Joseph Fitoussi, Mohammadali Shirinbayan

{"title":"Prediction of Ductile Damage in Composite Material Used in Type IV Hydrogen Tanks by Artificial Neural Network and Machine Learning with Finite Element Modeling Approach","authors":"Kheireddin Kadri, Achraf Kallel, Guillaume Guerard, Abir Ben Abdallah, Sébastien Ballut, Joseph Fitoussi, Mohammadali Shirinbayan","doi":"10.1002/ente.202401045","DOIUrl":"https://doi.org/10.1002/ente.202401045","url":null,"abstract":"This study investigates the degradation process of composite materials used in high-pressure hydrogen storage vessels by employing advanced computational techniques. A recurrent neural network, specifically a bidirectional long short-term memory (Bi-LSTM) network, is utilized to predict the temporal evolution of ductile damage. The key degradation features are extracted from finite element modeling (FEM) computations using group method of data handling algorithms and treated as time-series data. Results demonstrate that the Bi-LSTM network can accurately undergo both elastic and plastic behaviors of the composite under tensile strength. Additionally, traditional machine learning (ML) algorithms such as extreme gradient boosting and random forest are employed to forecast strain degradation, showing promising results. This hybrid approach combining FEM, ML, and deep learning provides a comprehensive method for predicting the degradation of composite materials, offering significant potential for optimizing the design and durability of hydrogen storage vessels.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143112995","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

Thermal Safety Characteristic Analysis of Large-Format Pouch Li-Ion Capacitors 大型袋装锂离子电容器的热安全特性分析

IF 3.6 4区工程技术

Energy technology Pub Date : 2024-10-04 DOI: 10.1002/ente.202401272

Jing Zhang, Guotao Gao, Yabin An, Keliang Zhang, Jijun Feng, Xianzhong Sun, Chen Li, Xiaohu Zhang, Yinghui Gao, Kai Wang, Xiong Zhang, Yanwei Ma

引用次数: 0

Material Selection of Tanks for Storage and Transport of Liquid Organic Hydrogen Carriers: A Lightweight and Lifecycle Assessment Comparative Study of Metal, Polymer, and Composite Alternatives

IF 3.6 4区工程技术

Energy technology Pub Date : 2024-10-04 DOI: 10.1002/ente.202401297

Vinicius Carrillo Beber, Gideon Abels, Olaf Hesebeck

{"title":"Material Selection of Tanks for Storage and Transport of Liquid Organic Hydrogen Carriers: A Lightweight and Lifecycle Assessment Comparative Study of Metal, Polymer, and Composite Alternatives","authors":"Vinicius Carrillo Beber, Gideon Abels, Olaf Hesebeck","doi":"10.1002/ente.202401297","DOIUrl":"https://doi.org/10.1002/ente.202401297","url":null,"abstract":"Liquid organic hydrogen carriers (LOHCs) are a key technology for a decarbonized industrial production. A comparative study on the material selection of tanks for the storage and transport of LOHC is presented. Three material classes are compared: metals (steel), polymers (thermoplastic), and composites (glass fiber-reinforced plastic). Considering existing standards, two sizes of tanks (150 and 700 m3) are dimensioned based on scenario requirements of loading and environmental conditions specific to the transport of the LOHC benzyltoluene. Thermoplastic tanks fulfilling the requirements are significantly heavier even than steel tanks, while the lowest tank mass can be achieved using glass fiber-reinforced plastics (GFRP). Concerning GFRP: 1) a resin with suitable chemical resistance is preferable over a thermoplastic lining; 2) a construction geometry with a flat bottom and curved roof improves lightweight; and 3) woven roving yields lighter tanks than chopped strand mats. Lifecycle assessment for mobile and stationary tanks indicates that GFRP offers the smallest CO2 emissions for mobile tanks due to fuel savings, while steel is preferable for stationary tanks. In this regard, advancements in circularity and bio-based raw materials for composites can improve GFRP's ecological balance for LOHC applications.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ente.202401297","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143111938","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

Prediction of Screen-Printed Electrodes with Fine-Line and Arbitrary Structures

IF 3.6 4区工程技术

Energy technology Pub Date : 2024-10-04 DOI: 10.1002/ente.202401346

Marius Singler, Linda Ney, Simon Auerbach, Jonas Krause, Tom Hoger, Niloufar Rhabari, Andreas Lorenz, Sebastian Tepner, Florian Clement

{"title":"Prediction of Screen-Printed Electrodes with Fine-Line and Arbitrary Structures","authors":"Marius Singler, Linda Ney, Simon Auerbach, Jonas Krause, Tom Hoger, Niloufar Rhabari, Andreas Lorenz, Sebastian Tepner, Florian Clement","doi":"10.1002/ente.202401346","DOIUrl":"https://doi.org/10.1002/ente.202401346","url":null,"abstract":"Currently, the photovoltaic manufacturing industry is confronted with an upcoming material shortage, primarily driven by the continued dependence on silver for front-side metallization in TOPCon, SHJ, and PERC solar cells. This study employs a mathematical model originally introduced by Ney et al. in 2019 to predict the outcome of printed contact structures based on mesh characteristics. For validation, printing experiments are conducted with variations in printing speed, screen angle, and calendaring strength. It is generally observed that predictions for screens with a 20° mesh angle are less accurate than for other angles. In addition, it is noted that the prediction became more accurate with increasing channel width. Although, for some cases, a prediction accuracy between 77 and 87% is achieved, it is important to acknowledge that the results obtained from the simulation deviate from the real-world observations to some extent. Additionally, a clear correlation between mesh thickness and printed volume is observed, enabling the prediction of silver usage and potential material savings.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ente.202401346","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143111953","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