Energy technology最新文献

Developing Hybrid TiO2–Multiwalled Carbon Nanotubes Photoanodes for Dye-Sensitized Solar Cells 染料敏化太阳能电池用混合tio2 -多壁碳纳米管光阳极的研究

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-03-30 DOI: 10.1002/ente.202401946

Yusuf Yıldız, Kemal Bilen, Abdullah Atılgan

{"title":"Developing Hybrid TiO2–Multiwalled Carbon Nanotubes Photoanodes for Dye-Sensitized Solar Cells","authors":"Yusuf Yıldız, Kemal Bilen, Abdullah Atılgan","doi":"10.1002/ente.202401946","DOIUrl":"https://doi.org/10.1002/ente.202401946","url":null,"abstract":"Dye-sensitized solar cells (DSSCs) are one of the prominent research fields of solar energy that have been recently studied by scientists among different disciplines. One of the manners for the production of effective DSSCs is greatly dependent on improving the properties of the TiO2 structure. Resistance against diffusion of photoexcited charge carriers through interconnected TiO2 nanoparticles is one of the main obstacles for achieving greater efficiency. Charge transfer resistances that originate from imperfections and surface trap states between TiO2 nanoparticles deteriorate the electron transport process. This study addresses the issues of charge transfer resistance and trap states, hindering the performance parameters of a solar cell. To mitigate these problems, the TiO2 paste including TiCl3 blocking layer and TiCl4 post-treatment is incorporated with multiwalled carbon nanotubes (MWCNTs). Herein, different amounts of MWCNTs (0, 0.025, 0.05, 0.1, 0.15, and 0.2 wt%) are added into TiO2 pastes. The impact of the changing weight ratios of MWCNTs on the DSSC performance parameters was investigated. When compared with the undoped sample (0 wt%), it has seen that JSC and power conversion efficiency (PCE) are boosted by 114% and 58.4%, correspondingly, for the sample containing 0.1 wt% of MWCNT. The results indicate that the JSC and PCE of the DSSC with an ideal amount of MWCNT can be upgraded to 22.63 mA cm−2 and 7.21%, respectively.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 7","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144598733","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 Effects in Earth-Abundant Bimetallic Aerogels for Enhanced Oxygen Evolution Reaction 富土双金属气凝胶中增强析氧反应的协同效应

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-03-20 DOI: 10.1002/ente.202401555

Wei Wei, Ruomei Yin, Houxu Mei, Jialu Lu, Junjie Gao, Hui Li, Kun Qian, Xiaodong Wu

{"title":"Synergistic Effects in Earth-Abundant Bimetallic Aerogels for Enhanced Oxygen Evolution Reaction","authors":"Wei Wei, Ruomei Yin, Houxu Mei, Jialu Lu, Junjie Gao, Hui Li, Kun Qian, Xiaodong Wu","doi":"10.1002/ente.202401555","DOIUrl":"https://doi.org/10.1002/ente.202401555","url":null,"abstract":"\u0000Inexpensive and efficient earth-abundant metal catalysts are required for electrocatalytic water splitting to meet future energy conversion and storage demand, but its practical production is limited by uncertain factors such as slow oxygen evolution reaction (OER) kinetics, low electrical conductivity, and unclear catalytic mechanism. A facile one-step reduction and in situ gelation reaction is proposed to synthesize a series of earth-abundant nickel-based bimetallic aerogels (NixFey, NixCoy, and NixCuy) by utilizing the synergistic effect between bimetals and a surface electronic structure adjustment strategy to realize the OER performance improvement. Meanwhile, density functional theory calculations show that the introduction of transition metal Fe into Ni aerogels can cause the center of Fe d-band to shift down, induce strong electronic effects on the Ni surface, and regulate the adsorption of OER reaction intermediates (*OH, *O, and *OOH), enhancing the aerogel conductivity, thereby achieving higher intrinsic OER activity of the Ni45Fe55 aerogel catalyst. This work sheds light on the design of high-performance earth-abundant bimetallic aerogels electrocatalysts.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 6","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144273143","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

Metal–Organic Frameworks: Synthesis Methods and Multifunctional Applications 金属有机骨架：合成方法及其多功能应用

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-02-27 DOI: 10.1002/ente.202402354

Jaykishon Swain, Anulipsa Priyadarshini, Swati Panda, Sugato Hajra, Niharika Das, Venkateswaran Vivekananthan, Krystian Mistewicz, Raghabendra Samantray, Hoe Joon Kim, Rojalin Sahu

{"title":"Metal–Organic Frameworks: Synthesis Methods and Multifunctional Applications","authors":"Jaykishon Swain, Anulipsa Priyadarshini, Swati Panda, Sugato Hajra, Niharika Das, Venkateswaran Vivekananthan, Krystian Mistewicz, Raghabendra Samantray, Hoe Joon Kim, Rojalin Sahu","doi":"10.1002/ente.202402354","DOIUrl":"https://doi.org/10.1002/ente.202402354","url":null,"abstract":"Metal–organic frameworks (MOFs) have emerged as a transformative class of materials in materials science and chemistry due to their exceptional porosity and structural tunability. Composed of metal ions or clusters intricately coordinated with organic ligands, MOFs form highly ordered 3D networks with well-defined pores and channels. These unique characteristics enable precise customization of pore size, shape, and functionality through the selection of appropriate metal ions and ligands, unlocking diverse applications across multiple fields. This review provides a comprehensive exploration of MOFs, focusing on their synthesis, structural properties, and versatility. Key areas of discussion include MOFs’ potential for catalytic activity, gas storage, sensing, and drug delivery. Of particular importance is their transformative role in environmental remediation, energy storage, and biomedical applications, demonstrating their adaptability to modern challenges. However, significant barriers such as scalability, long-term stability, and economic viability must be addressed to enable widespread adoption. By detailing state-of-the-art advancements, this review highlights MOFs’ unparalleled ability to achieve precision and efficiency in targeted applications, offering valuable insights for emerging researchers. The findings underscore MOFs’ pivotal role in addressing contemporary scientific and industrial challenges, paving the way for innovative solutions in energy, environment, and health.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 5","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939273","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

Designing an Exfoliated Hexagonal Boron Nitride Nanosheets Embellished on Spherical ZnS as an Efficient Electrode for Hybrid Supercapacitor Applications 球形ZnS修饰的脱片状六方氮化硼纳米片作为混合超级电容器高效电极的设计

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-02-27 DOI: 10.1002/ente.202401993

Dhamodharan Krishnamoorthy, Abhishek Kumar Singh

{"title":"Designing an Exfoliated Hexagonal Boron Nitride Nanosheets Embellished on Spherical ZnS as an Efficient Electrode for Hybrid Supercapacitor Applications","authors":"Dhamodharan Krishnamoorthy, Abhishek Kumar Singh","doi":"10.1002/ente.202401993","DOIUrl":"https://doi.org/10.1002/ente.202401993","url":null,"abstract":"Supercapacitors have evolved into a viable solution for confronting issues of energy demand for modern technological world, but its most significant challenge is the construction of novel electrode devices with long-term energy accumulation. In this current work, exfoliated h-BN-ZnS nanocomposites have been efficiently synthesized through an ultrasonication technique. The characterizations of Raman, X-ray diffraction, and X-ray photoelectron spectroscopy studies ensure the successful preparation of exfoliated h-BN-ZnS nanocomposites. Further, morphology is visualized by field emission scanning electron microscopy and high-resolution transmission electron microscopy, displaying exfoliated h-BN nanosheets embellished over a surface of spherical-shaped ZnS particles. The electrochemical studies of cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic charge and discharge have been tested in which the exfoliated h-BN-ZnS NCs working electrode reveals maximum specific capacity of 919.09 C g−1 at 10 mV s−1. A hybrid supercapacitor device is constructed by assembling an exfoliated h-BN-ZnS and activated carbon as positive and negative electrode, providing an excellent specific capacity of 273.54 C g−1 at 1 A g−1, and achieving a good energy density of 64.20 Wh kg−1 at the corresponding power density of 844.92 W kg−1, and showing 94.5% of superior capacity retention at 10 A g−1 of current density over 5000 cycles respectively.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 5","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939577","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

In Situ Synthesis of Bifunctional NiMn Hybrid Oxides for High-Performance Flexible Supercapacitors and Oxygen Evolution Reaction 高性能柔性超级电容器用双功能NiMn杂化氧化物的原位合成及析氧反应

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-02-26 DOI: 10.1002/ente.202402270

Arushee Rajeev, Arpit Thomas, Sai Sabareesh K.S., Harpreet Singh Arora

{"title":"In Situ Synthesis of Bifunctional NiMn Hybrid Oxides for High-Performance Flexible Supercapacitors and Oxygen Evolution Reaction","authors":"Arushee Rajeev, Arpit Thomas, Sai Sabareesh K.S., Harpreet Singh Arora","doi":"10.1002/ente.202402270","DOIUrl":"https://doi.org/10.1002/ente.202402270","url":null,"abstract":"Ni-based binary alloy compositions are considered promising materials for energy storage and catalysis applications. Herein, a highly simplistic and efficient technique is reported for synthesizing NiMn hybrid oxyhydroxides as a bifunctional electrode for flexible supercapacitors and an efficient oxygen evolution reaction (OER) catalyst. The synthesis approach involves Ni and Mn coelectrodeposition under a controlled oxygenated environment over a flexible stainless-steel substrate. The developed electrodes exhibit an excellent specific capacitance of 633.54 F g−1 at a current density of 1 A g−1, matching one of the best-reported values in the literature. A symmetric device demonstrates a remarkable energy density of 45 Wh kg−1 at a power density of 181.22 W kg−1. The device shows an excellent cyclic stability of 89.5% after 10 000 cycles. In addition, the NiMn oxyhydroxide electrode showed a remarkable performance in OER with overpotential values of only 282 and 312 mV at 500 and 1000 mA cm−2 current density, surpassing many well-reported studies in the literature. The current study provides a facile and efficient strategy for synthesizing bifunctional electrodes for high-performance energy storage devices and catalysts for OERs.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 5","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939611","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

Galfenol-Based Magnetostrictive Energy Harvester for Structural Health Monitoring of Bridges Under Vehicular Loads 基于galfenol的车辆荷载下桥梁结构健康监测磁致伸缩能量采集器

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-02-11 DOI: 10.1002/ente.202402039

Shamik Dasadhikari, Debabrata Roy, Sotoshi Yamada

{"title":"Galfenol-Based Magnetostrictive Energy Harvester for Structural Health Monitoring of Bridges Under Vehicular Loads","authors":"Shamik Dasadhikari, Debabrata Roy, Sotoshi Yamada","doi":"10.1002/ente.202402039","DOIUrl":"https://doi.org/10.1002/ente.202402039","url":null,"abstract":"The objective of this work is to create a magnetostrictive energy harvester (MEH) using Galfenol to assess the structural health of bridges under automotive loads. The MEH is subjected to controlled vibrations—square, triangular, and sinusoidal waves—using a modified cantilever configuration. It generates a voltage difference across the pickup coil terminals using a Galfenol transducer as the magnetostrictive material, which is then converted into steady DC voltage via a rectification cum warning circuit. The effectiveness of the energy harvester has been confirmed through an experimental setup and expanded to monitor the state of a prototype bridge. The MEH produces varying voltages in response to vibrations in its surroundings, allowing for the differentiation between the healthy condition and the declining condition of bridges. Additionally, an adaptive neuro-fuzzy inference system enables the creation of predictive models based on the existing experimental data. This provides vital insights into the viability of real-time monitoring and early detection of structural anomalies in bridge structures. This study demonstrates the effectiveness of utilizing Galfenol-based magnetostrictive energy harvesting to enhance the safety and efficiency of infrastructure maintenance. This technology additionally enhances the durability and long-term viability of transportation networks.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 5","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939138","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

Impact of Ammonium Triflate on Iota Carrageenan Solid Biopolymer Electrolytes for Electrochemical Devices 三酸铵对电化学器件用Iota卡拉胶固体生物聚合物电解质的影响

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-02-11 DOI: 10.1002/ente.202401586

Moniha Vijayan, Venkatesh Kaliyaperumal, Premalatha Manavalan, Monisha Sampath, Selvalakshmi Selvasankar, Premkumar Rajendran, Alagar Marimuthu, Sundaresan Balakrishnan

{"title":"Impact of Ammonium Triflate on Iota Carrageenan Solid Biopolymer Electrolytes for Electrochemical Devices","authors":"Moniha Vijayan, Venkatesh Kaliyaperumal, Premalatha Manavalan, Monisha Sampath, Selvalakshmi Selvasankar, Premkumar Rajendran, Alagar Marimuthu, Sundaresan Balakrishnan","doi":"10.1002/ente.202401586","DOIUrl":"https://doi.org/10.1002/ente.202401586","url":null,"abstract":"A free-standing, flexible polysaccharide-based natural solid polymer electrolyte composed of i-Carrageenan doped with various concentrations of ammonium triflate is created via the solution casting approach. An investigation was conducted into the effects of ionic dopant on the structural, vibrational, thermal, dielectric, transport, and electrochemical properties of created solid polymer electrolyte. Structural analysis (X-ray difraction and Fourier transform infrared spectroscopy) proves the non-crystalline nature and the interaction between dopant salt and biopolymer. The maximum conductivity of 1.27 × 10−3 Scm−1 is achieved for the sample containing 1 g i-Carrageenan and 0.3 wt% of ammonium triflate. Dielectric studies reveal that highest conducting membrane shows maximum ε′ and ε″ values. Thermal studies indicate that low glass transition temperature of 28 °C for the highest conducting membrane. Primary proton battery and single polymer electrolyte membrane fuel cell with the highest conducting membrane were fabricated, and their properties are examined. Open-circuit voltages of proton battery and fuel cell are observed to be 1.03 V and 631 mV, respectively.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 5","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939115","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

Structural, Morphological, and Electrochemical Characterization of Polypyrrole-Enhanced Reduced Graphene Oxide/NiCoFe2O4 Ternary Composite for High-Performance Supercapacitors 高性能超级电容器用聚吡咯增强还原氧化石墨烯/NiCoFe2O4三元复合材料的结构、形态和电化学表征

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-02-09 DOI: 10.1002/ente.202402142

Ansari Novman Nabeel, Alok Jain, Kailash Chandra Juglan, Sunita Bhagwa, Sajid Naeem

{"title":"Structural, Morphological, and Electrochemical Characterization of Polypyrrole-Enhanced Reduced Graphene Oxide/NiCoFe2O4 Ternary Composite for High-Performance Supercapacitors","authors":"Ansari Novman Nabeel, Alok Jain, Kailash Chandra Juglan, Sunita Bhagwa, Sajid Naeem","doi":"10.1002/ente.202402142","DOIUrl":"https://doi.org/10.1002/ente.202402142","url":null,"abstract":"Supercapacitors’ exceptional energy density, quick charge and discharge rates, and long cycle life make them extremely promising energy storage technologies. The investigation of electrochemical performance is improved by mixing conductive polymers with reduced graphene oxide (rGO) and nickel cobalt ferrite (NiCoFe2O4). It produces a binary rGO/NiCoFe2O4 composite synthesized by sol–gel autocombustion, which has a specific capacitance of 216.5 F g−1 at 10 mV s−1. A ternary PPy/rGO/NiCoFe2O4 composite is synthesized by adding polypyrrole (PPy), and at the same scan rate, it achieves a specific capacitance of 664.98 F g−1. Nickel foam is used as a substrate material for the electrode, and 3 M KOH is used as an electrolyte for electrochemical analysis. A high energy density of 90 W kg−1 and a power density of 1167.14 W kg−1 are also observed by electrochemical investigation and it can be used for supercapacitor applications.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 5","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938808","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

Synergetic Integration of Energy Recovery across Multiple Joint in Human Lower Limb Motion: A Biomechanical Exploration 人体下肢运动中多关节能量恢复的协同整合：生物力学探索

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-02-09 DOI: 10.1002/ente.202402140

Limin Ren, En Jiang, Shixun Li, Yang Zhou, Xuewen Sun, Enhe Kou, Ruijie Zhang, Yisong Tan

{"title":"Synergetic Integration of Energy Recovery across Multiple Joint in Human Lower Limb Motion: A Biomechanical Exploration","authors":"Limin Ren, En Jiang, Shixun Li, Yang Zhou, Xuewen Sun, Enhe Kou, Ruijie Zhang, Yisong Tan","doi":"10.1002/ente.202402140","DOIUrl":"https://doi.org/10.1002/ente.202402140","url":null,"abstract":"Current energy harvesting devices in the field of human lower limb energy recovery have the problems of low energy recovery efficiency and large mass and volume. To solve these problems, this article proposes a multijoint synergistic energy recovery device based on the concept of synergistic energy recovery, with the aim of allowing one energy harvester to collect negative work from multiple joints simultaneously. The recovery efficiency of the harvester is improved by increasing the energy recovery source. The mechanism achieves synergistic recovery of negative work in multiple joints of the human lower limb. The mechanical structure consists of a four-bar mechanism, limit switches, a planetary gear system, and a differential mechanism to complete the energy capture and coupling. Multiple energy streams are superimposed in an orderly manner without loss. The experimental results demonstrate the efficient output of this harvester in collecting and coupling energy in the negative work zone of the knee and hip joints. This integrated multijoint energy harvester achieves an output voltage of 118 V under normal human walking conditions. The device achieves a power output of 3.21 W and a power density of 7.32 W kg−1 at 2 Hz.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 5","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938776","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

Advances in Light-Emitting Diode-Based Transparent Displays 基于发光二极管的透明显示器的研究进展

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-02-09 DOI: 10.1002/ente.202402062

Jia Hong, Mingjie Zou, Sidan Ai, Xi Zheng, Guohua Zhou, Yijun Lu, Zhong Chen, Weijie Guo

引用次数: 0