Energy technology最新文献

{"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}

{"title":"Guidance for the Sustainable and Long-term Use of LNG Terminal Sites as Logistics Hubs for Hydrogen and Its Derivatives","authors":"Kristin Kschammer","doi":"10.1002/ente.202300969","DOIUrl":"https://doi.org/10.1002/ente.202300969","url":null,"abstract":"<p>On 1 June 2022, the German Act to Accelerate the Use of Liquefied Natural Gas (LNG Act) came into force. According to this law, a permit for the continued operation of LNG facilities after 31 December 2043 can only be granted if the facilities are operated with climate-neutral hydrogen and its derivatives. In this context, the research and development requirements for the conversion of LNG terminals to hydrogen and its derivatives were formulated. These requirements will be investigated in the new TransHyDE project LNG2HyDE which started on 1 June 2023. Central questions of the project are: What are the technological, regulatory and normative challenges for the conversion of LNG terminals to green hydrogen from renewable energy sources and its derivatives? What are the research and development needs? To what extent can and should the conversion of LNG terminals to hydrogen and its derivatives take place gradually? Is mixed operation feasible? What time and capacity requirements can be estimated for the conversion of terminals from LNG to hydrogen and hydrogen derivatives in the light of the global hydrogen value chains that are being set up?</p><p>The aim of the project is to develop, within 18 months, a scientifically sound, sustainable data base and recommendations as a basis for decision-making on the viable and long-term use of LNG terminal sites as logistical hubs for hydrogen and its derivatives. In order to achieve this goal, a technology-open investigation is to be carried out, so that in addition to liquid hydrogen and ammonia, the hydrogen carriers and hydrogen derivatives methanol, liquid organic hydrogen carriers, synthetic natural gas (SNG) and dimethyl ether are to be investigated. All of these promising candidates will be investigated in parallel.</p><p>The new TransHyDE project will define H₂ transport vectors in the context of LNG terminals and provide a technological inventory of terminals for the import of SNG, LNG, LH₂, NH₃, LOHC, MeOH and DME with the aim of identifying the main infrastructure components. Another important part of the project is the development of concepts for the further development and use of LNG terminals for other H₂ transport vectors. The terminal concepts include all process steps and infrastructures from ship docking, storage and conversion to the injection of the liquefied gas into the H₂ backbone network as well as filling facilities for domestic road, rail and ship transport. The starting point is the LNG terminal infrastructures currently being planned and built. In particular, it will be examined how existing facilities, infrastructure and components of the LNG terminals can be further used and which process steps and facilities will have to be replaced or newly constructed for the alternative utilization paths.</p><p>The project will also include an analysis of the materials used in the terminal components regarding their compatibility wit","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.202300969","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143248493","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}

{"title":"Oxidative Depolymerization of Lignin to Monophenolic Compounds Catalyzed by Spinel CuCo2O4","authors":"Yijie Zhou,&nbsp;Chun Wang,&nbsp;Cheng Pan,&nbsp;Lei Zhang,&nbsp;Guozhi Fan,&nbsp;Zhenzhen Wu","doi":"10.1002/ente.202401797","DOIUrl":"https://doi.org/10.1002/ente.202401797","url":null,"abstract":"<p>Lignin is the only natural polymer compound containing a benzene ring on earth, and its conversion to monophenolic compounds is attracting more attention. Cu-dopped CuCo₂O₄ is synthesized and further used to catalyze the oxidative conversion of lignin to monophenolic compounds. It is found that the conversion of lignin is affected by the molar ratio of Cu to Co, the amounts of catalyst and H₂O₂, reaction temperature and time, and CuCo₂O₄ exhibits excellent catalytic performance. Under the optimized reaction conditions, the total yield of monophenolic compounds reaches 21.7%. CuCo₂O₄ also possesses good recyclable performance, and the total yield of monophenolic compounds slightly drops to 17.6% after four cycles. A plausible mechanism for the conversion of lignin to monophenolic compounds is proposed. During the depolymerization of lignin, C<span></span>O and C<span></span>C bonds are broken to form monophenols. This work provides an effective catalyst for the conversion of lignin to monophenol and expands the way of high-value utilization of biomass.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 6","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144273274","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 Cooling Technologies for Electric Vehicle Drive Motors, Reducers, and Inverters: A Comprehensive Review","authors":"Hamdan Ahmad,&nbsp;Palanisamy Dhamodharan,&nbsp;Sung Chul Kim","doi":"10.1002/ente.202401691","DOIUrl":"https://doi.org/10.1002/ente.202401691","url":null,"abstract":"<p>Effective thermal management is a critical challenge in electric vehicles (EVs), influencing the efficiency, reliability, and lifespan of key components such as electric drive motors, inverters, and reducers. This comprehensive review systematically evaluates advanced cooling technologies for EV powertrains, providing a comparative analysis of traditional and emerging solutions. Novel insights are presented on the integration of innovative materials, such as nanofluids and phase-change materials, and the application of artificial intelligence (AI) for dynamic thermal optimization. The study highlights the enhanced cooling performance achieved through hybrid approaches that synergize liquid and air-cooling methods. Additionally, the review introduces the transformative potential of AI-driven systems in optimizing cooling efficiency, predicting thermal loads, and detecting faults in real time. The novelty of this work lies in its focus on the holistic thermal management of multiple EV components, bridging the gap in current literature by addressing the interplay of cooling strategies across the entire powertrain. This analysis underscores the need for continued innovation in thermal management to meet the growing demands of EV technology and sustainability goals.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 5","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939051","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":"Exploring Vanadium Disulfide (VS2) Nanosheets as High-Efficiency Supercapacitor Electrodes","authors":"Anila Bhuvanendran Nandana,&nbsp;Raghavan Baby Rakhi","doi":"10.1002/ente.202402153","DOIUrl":"https://doi.org/10.1002/ente.202402153","url":null,"abstract":"<p>Transition metal dichalcogenides (TMDs) emerge as promising electrode materials for next-generation electrochemical energy-storage devices. In the present study, vanadium disulfide (VS₂), an underexplored TMD, is investigated as an electrode material for supercapacitors. VS₂ nanosheets are synthesized via a single-step hydrothermal method at 220 °C for 24 h. Multiple characterization techniques, including Fourier-transform infrared, Raman spectroscopy, scanning electron microscope–energy dispersive X-ray analysis, and transmission electron microscope, confirm the formation of phase-pure VS₂ nanosheets with a hexagonal structure. The specific surface area, measured using Brunauer–Emmett–Teller analysis, is 12 m² g⁻¹. A specific capacitance of 106 F g⁻¹ at a current density of 1 A g⁻¹ is demonstrated using symmetric supercapacitors fabricated using these VS₂ nanosheets. Using this device, an energy density of 34 Wh kg⁻¹ at a power density of 800 W kg⁻¹ is achieved. Moreover, the supercapacitor maintains 94% capacitance retention after 9000 charge–discharge cycles at 5 A g⁻¹, highlighting the potential of VS₂ nanosheets as efficient electrode materials for supercapacitor applications.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 5","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939581","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":"Carbon-Supported Ni–Cu Bimetallic Nanoparticle Materials for Highly Efficient Electrocatalytic Conversion of CO2 to CO","authors":"Yanzhuo Liu,&nbsp;Tianxia Liu,&nbsp;Bingzhen Ma","doi":"10.1002/ente.202401820","DOIUrl":"https://doi.org/10.1002/ente.202401820","url":null,"abstract":"<p>Electrocatalytic reduction of carbon dioxide is a highly effective method for energy storage. It is essential to explore inexpensive metal catalysts that exhibit high selectivity and yield for carbon monoxide, yet this remains a significant challenge. In this study, carbon-supported Ni–Cu bimetallic nanoparticles (denoted as Ni_<i>x</i>Cu_<i>y</i> NPs-C) are synthesized through low-temperature carbonization of Ni_<i>x</i>Cu_<i>y</i>-ZIF. The carbon matrix effectively prevents the aggregation of Ni/Cu NPs, allowing for a more uniform dispersion that exposes a greater number of active sites. The well-conductive Ni/Cu particles facilitate electron transfer, contributing to high current density. Electrocatalytic performance tests indicate that the synthesized catalyst can efficiently convert carbon dioxide to carbon monoxide, achieving a Faradaic efficiency for CO (FE_CO) exceeding 90% at potentials from −0.9 V (vs. reversible hydrogen electrode (RHE)) to −1.1 V (vs. RHE), with a peak FE_CO of 96.37 % at −1.1 V (vs. RHE) and a total current density of 15.435 mA cm⁻².</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 6","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144273519","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}