Energy technology最新文献

{"title":"Impedance Spectroscopic and Electrical Equivalent Circuit Analysis of Indium Tin Oxide/n-CdS/p-Si Heterojunction Solar Cell Using SCAPS-1d and Impedance Spectroscopic Modules","authors":"Prakash Kumar Jha,&nbsp;Ritesh Kumar Chourasia,&nbsp;Ankita Srivastava,&nbsp;Atish Kumar Sharma,&nbsp;Keyur Sangani,&nbsp;Nitesh K. Chourasia","doi":"10.1002/ente.202402031","DOIUrl":"https://doi.org/10.1002/ente.202402031","url":null,"abstract":"<p>The impedance spectroscopic (IS) and electrical equivalent circuit analysis of the popular combination indium tin oxide/n-CdS/p-Si heterojunction solar cell is being carried out for the very first time in this analytical study using solar cell capacitance simulator (SCAPS)-1d and the IS module. In this analysis, it is aimed to uncover the device's inherent characteristics for the purpose of future advancements and improvements. Various characteristics and features, as well as the basis for future device improvements, are uncovered through rigorous analysis of the following variables: forward/reverse bias voltage, frequency, illumination intensities (dark and light mode), wavelength-dependent capacitance–voltage, conductance-voltage, capacitance–frequency, and capacitance–temperature. Additionally, spectral response (SR) charts that rely on wavelength are created in addition to Nyquist and Bode plots. The acquired impedance data is much enhanced by these displays. Through IS analysis, a potent method for investigating the dynamics of electrical and ionic charges inside cells is revealed. An improved comprehension of the internal voltage and doping profile in the layers is achieved through additional Mott–Schottky analysis. Bode graphs that rely on frequency provide a better way to comprehend the device's dielectric characteristics. The SR curve can be better understood with the help of these graphs.</p>","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":"143939137","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}

{"title":"Impact of Ammonium Triflate on Iota Carrageenan Solid Biopolymer Electrolytes for Electrochemical Devices","authors":"Moniha Vijayan,&nbsp;Venkatesh Kaliyaperumal,&nbsp;Premalatha Manavalan,&nbsp;Monisha Sampath,&nbsp;Selvalakshmi Selvasankar,&nbsp;Premkumar Rajendran,&nbsp;Alagar Marimuthu,&nbsp;Sundaresan Balakrishnan","doi":"10.1002/ente.202401586","DOIUrl":"https://doi.org/10.1002/ente.202401586","url":null,"abstract":"<p>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 × 10⁻³Scm⁻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 <i>ε</i>′ and <i>ε</i>″ 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.</p>","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}

{"title":"Structural, Morphological, and Electrochemical Characterization of Polypyrrole-Enhanced Reduced Graphene Oxide/NiCoFe2O4 Ternary Composite for High-Performance Supercapacitors","authors":"Ansari Novman Nabeel,&nbsp;Alok Jain,&nbsp;Kailash Chandra Juglan,&nbsp;Sunita Bhagwa,&nbsp;Sajid Naeem","doi":"10.1002/ente.202402142","DOIUrl":"https://doi.org/10.1002/ente.202402142","url":null,"abstract":"<p>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.</p>","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}

{"title":"Synthesis of N-Ethyl Carboxylic Acid Functionalized Polyethylenimine as Self-Crosslinking Aqueous Binder for LiFePO4 Cathode of Lithium-Ion Batteries","authors":"Dan Shao,&nbsp;Jinxin Huang,&nbsp;Aihua Wu,&nbsp;Yingjun Fang,&nbsp;Xiangfeng Li,&nbsp;Liangyong Hu,&nbsp;Cheng Chen,&nbsp;Lingzhi Zhang","doi":"10.1002/ente.202402066","DOIUrl":"https://doi.org/10.1002/ente.202402066","url":null,"abstract":"<p><i>N</i>-Ethyl carboxylic acid functionalized polyethyleneimine (<i>N</i>-CEPEI) has been explored as a novel water-solution binder for LiFePO₄ (LFP) cathodes, which is synthesized via Michael addition reaction of acrylic acid with the primary and secondary amines from PEI, followed by subsequent in situ condensation. The <i>N</i>-CEPEI binder facilitates the formation of a 3D polymer networks, which exhibits a higher diffusion efficacy of lithium ions and better mechanical strength compared to the commercial poly(vinylidene difluoride) (PVDF) binder, and thus maintains the structural integrity of LFP electrode. The electrochemical performance of the LFP electrode utilizing <i>N</i>-CEPEI binder is evaluated through cyclic voltammetry, electrochemical impedance spectroscopy, and long-cycle-life testing, and the results are compared with those of electrodes using PVDF and PEI binder. The optimal LFP electrode with <i>N</i>-CEPEI binder exhibits superior cycling stability and rate capability, delivering a capacity of 139.60 mAh g⁻¹ with a capacity retention of 94.8% after 400 cycles at 1 C, as compared with 86.6% for PVDF-LFP electrode. Even at a high rate of 5 C, the <i>N</i>-CEPEI-LFP electrode maintains a capacity of 80 mAh g⁻¹ after 500 cycles. This work highlights the potential of <i>N</i>-CEPEI as an effective water-solution binder for LFP-based lithium-ion batteries.</p>","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":"143938777","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}

{"title":"High-Power Primary Lithium Battery with Vanadium Oxide/Fluorocarbon-Based Cathode","authors":"Alexey V. Merkulov,&nbsp;Filipp S. Napolskiy,&nbsp;Anna A. Rudnykh,&nbsp;Tatyana A. Atlavinus,&nbsp;Ilia I. Tsiniaikin,&nbsp;Victor A. Krivchenko","doi":"10.1002/ente.202402061","DOIUrl":"https://doi.org/10.1002/ente.202402061","url":null,"abstract":"<p>The manuscript examines the applicability of the lithium-vanadium oxide-fluorocarbon electrochemical system for primary batteries with both high-power and high specific energy density. The influence of mass ratio of fluorinated carbon and vanadium oxide in the composition of the positive electrode on its specific characteristics is studied. At a low discharge current density of 0.17 mA cm⁻² the specific energy density is proportional to the mass fraction of CF_<i>x</i> in cathode layer and achieves up to 900 Wh kg (cathode layer)⁻¹ for the cells with cathode active material composition V₂O₅:CF_<i>x</i> = 100%:0% and up to 1800 Wh kg (cathode layer)⁻¹ for the cells with cathode active material composition V₂O₅:CF_<i>x</i> = 0%:100%. At high current densities, cells with a cathode that corresponds to active material composition V₂O₅:CF_<i>x</i> = 70%:30% have the highest specific energy density reaching up to 700 Wh kg (cathode layer)⁻¹ at 18 mA cm⁻² and 410 Wh kg (cathode layer)⁻¹ at 30 mA cm⁻². The practical applicability of the considered electrochemical system is approved on the pouch cell prototypes with capacity of about 4 Ah, specific energy density of 420 Wh kg (pouch cell)⁻¹ and peak/continuous specific power of 1500/290 W kg (pouch cell)⁻¹.</p>","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":"143938806","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}

{"title":"Synergetic Integration of Energy Recovery across Multiple Joint in Human Lower Limb Motion: A Biomechanical Exploration","authors":"Limin Ren,&nbsp;En Jiang,&nbsp;Shixun Li,&nbsp;Yang Zhou,&nbsp;Xuewen Sun,&nbsp;Enhe Kou,&nbsp;Ruijie Zhang,&nbsp;Yisong Tan","doi":"10.1002/ente.202402140","DOIUrl":"https://doi.org/10.1002/ente.202402140","url":null,"abstract":"<p>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.</p>","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}

{"title":"Advances in Light-Emitting Diode-Based Transparent Displays","authors":"Jia Hong,&nbsp;Mingjie Zou,&nbsp;Sidan Ai,&nbsp;Xi Zheng,&nbsp;Guohua Zhou,&nbsp;Yijun Lu,&nbsp;Zhong Chen,&nbsp;Weijie Guo","doi":"10.1002/ente.202402062","DOIUrl":"https://doi.org/10.1002/ente.202402062","url":null,"abstract":"<p>The transparent displays can provide unprecedented see-through visual experiences, facilitating the implementation of augmented reality and human–machine interaction in the metaverse era. In recent years, self-emissive technology has been increasingly applied in the development of transparent displays. This review introduces the latest advancements in self-emissive transparent display technologies that employ small-pitch light-emitting diodes (LEDs), organic LEDs, mini-LEDs, micro-LEDs, and quantum dots. Additionally, it highlights the basic principles, key devices, and future pathways for achieving high-performance transparent displays.</p>","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":"143938807","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}

{"title":"Property–Performance Relationship of Waste Floral Foam-Derived Nanoporous Carbon as Metal-Free Oxygen Evolution Reaction and Hydrogen Evolution Reaction Electrocatalyst: Implications of N and S Doping","authors":"Akshata Pattanshetti,&nbsp;Prathamesh Chougale,&nbsp;Mahesh Burud,&nbsp;Miroslaw Kwiatkowski,&nbsp;Vijay Chavan,&nbsp;Honggyun Kim,&nbsp;Deok-kee Kim,&nbsp;Sandip Sabale","doi":"10.1002/ente.202401861","DOIUrl":"https://doi.org/10.1002/ente.202401861","url":null,"abstract":"<p>Designing electrocatalysts with high-performance potential requires a thorough investigation of the relationships between property changes and electrocatalytic activity. This study compares the effect of N-doping and N, S-codoping on the properties of waste floral foam derived pristine nanoporous carbon to enhance electrocatalytic activity. N, S-codoping modulates the textural, structural, and chemical properties of pristine nanoporous carbon that are preferable to oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) performance. N, S-codoped nanoporous carbon having a large surface area (1231 m² g⁻¹), higher content of defects, OH−, CO, and pyridinic N exhibits superior OER and HER activity with overpotentials 290 and −180 mV, respectively at 10 mA cm⁻², emphasizing the synergetic effect of dual atoms nitrogen (N) and sulfur (S) in enhancing electrocatalytic performance. The work proposed here presents the implementation of “waste-to-energy” through repurposing of waste floral foam into N, S-codoped nanoporous carbon as a metal-free bifunctional electrocatalyst for OER and HER.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 6","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144273196","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}

{"title":"Self-Powered Vibration Sensing and Energy Harvesting via Series-Resistor-Enhanced Triboelectric Nanogenerators with Charge Compensation for Autonomous Alarm Systems","authors":"Zhe Li,&nbsp;Lin Fang,&nbsp;Leilei Shu,&nbsp;Feixiang Wang,&nbsp;Jin Wu,&nbsp;Zixun Wang,&nbsp;Haonan Zhang,&nbsp;Peihong Wang","doi":"10.1002/ente.202402284","DOIUrl":"https://doi.org/10.1002/ente.202402284","url":null,"abstract":"<p>The ability to efficiently harvest energy while accurately sensing signals with a single device is a critical focus in self-powered vibration monitoring systems and an urgent requirement for the highly integrated development of the Internet of Things (IoT). This work presents a triboelectric nanogenerator that combines energy harvesting with vibration signal sensing (SE-TENG). By connecting a sensing resistor with a sensing triboelectric nanogenerator (S-TENG) in series and using the S-TENG as a pump-TENG to provide charge to the energy harvesting triboelectric nanogenerator (E-TENG), this approach effectively utilizes the energy from the S-TENG component, reducing energy loss. Under vibration excitation with 0.6 mm amplitude, the output voltage of SE-TENG remains above 200 V in 12–30 Hz. Additionally, we implement an external limiter strategy to limit the displacement of the moving part, which optimizes the waveform of the sensing signal. Based on SE-TENG, we have successfully realized self-driven wireless temperature and humidity monitoring, self-driven vibration frequency sensing alarm, and self-driven amplitude monitoring alarm. This work provides a new idea for TENG to get both energy and signal in the field of vibration energy collection and sensing, and has potential application in the integrated development of the IoT.</p>","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":"143938775","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}

{"title":"TransHyDE - Developing Solutions for Designing Ideal Hydrogen Infrastructures to Maximise Efficiency and Resilience","authors":"Fenja Bleich","doi":"10.1002/ente.202401543","DOIUrl":"https://doi.org/10.1002/ente.202401543","url":null,"abstract":"<p>Dear readers,</p><p>With the adoption of the National Hydrogen Strategy (NWS) in June 2020 and its update in July 2023, the German government strengthens the establishment of a hydrogen economy in Germany to achieve the Paris climate goals and to build an energy system based on renewable energies.</p><p>To meet the required demand international imports will complement the national production. Supra-regional storage and transport infrastructures for green hydrogen are needed to ensure efficient temporal and spatial distribution.</p><p>This is where TransHyDE comes in as one of three hydrogen flagship projects funded by the German Federal Ministry of Education and Research (BMBF). The project is coordinated by Prof. Robert Schlögl (Max Planck Society), Prof. Mario Ragwitz (Fraunhofer Institute for Energy Infrastructures and Geothermal Energy IEG) and Jimmie M. Langham (cruh21 GmbH - Part of Drees &amp; Sommer).</p><p>Over 100 partners and associated partners are working to resolve technological and economic barriers, analyse gaps in technical codes and regulatory frameworks, and contribute to closing them. This is implemented by ten TransHyDE projects for the energy vectors gaseous and liquid hydrogen as well as liquid organic hydrogen carriers (LOHC) and ammonia. The results are continuously communicated via target-specific measures, e. g. whitepapers, scientific papers and events, to the scientific community, political decision-makers and the general public.</p><p>This special issue of the scientific journal Energy Technology mirrors the comprehensive thematical set-up of the TransHyDE projects by illustrating their aspects of the transport and storage infrastructure of hydrogen and its derivates. The perspectives of the featured articles and reviews are remarkably diverse and span the full range from higher level topics like transitioning paths towards climate neutral gas grids to providing answers to specific, in-depth technological questions that need to be solved to make the models become reality. The technology-open approach of TransHyDE is clearly visible in this special issue as it is not limited to one specific hydrogen transport option or infrastructural component, where for example hydrogen storage with LOHC technology, as well as underground storage in sandstone formations and the direct usage of ammonia in combustion engines are examined next to one another. Studies on public acceptance and societal risk perception add to the technological perspectives and allow putting them into action.</p><p>With this broad range of topics, the TransHyDE special issue invites readers to take a holistic approach to future transport and storage infrastructure of hydrogen and its derivates in Germany. We firmly believe that only by putting all our knowledge together and remaining technology-open we will be able to find efficient solutions to sensibly conclude the ongoing energy transition.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 2","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ente.202401543","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143248485","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}