Frontiers in Energy最新文献_第5页

Application and structure of carbon nanotube and graphene-based flexible electrode materials and assembly modes of flexible lithium-ion batteries toward different functions 碳纳米管和石墨烯基柔性电极材料的应用与结构，以及面向不同功能的柔性锂离子电池组装模式

IF 3.1 4区工程技术

Frontiers in Energy Pub Date : 2024-01-10 DOI: 10.1007/s11708-024-0911-2

Yanzhi Cai, Zhongyi Hu, Laifei Cheng, Siyu Guo, Tingting Liu, Shaohua Huang, Dengpeng Chen, Yuhan Wang, Haiming Yu, Yuan Zhou

{"title":"Application and structure of carbon nanotube and graphene-based flexible electrode materials and assembly modes of flexible lithium-ion batteries toward different functions","authors":"Yanzhi Cai, Zhongyi Hu, Laifei Cheng, Siyu Guo, Tingting Liu, Shaohua Huang, Dengpeng Chen, Yuhan Wang, Haiming Yu, Yuan Zhou","doi":"10.1007/s11708-024-0911-2","DOIUrl":"10.1007/s11708-024-0911-2","url":null,"abstract":"<div><p>In recent years, the rapid development of portable/wearable electronics has created an urgent need for the development of flexible energy storage devices. Flexible lithium-ion batteries (FLIBs) have emerged as the most attractive and versatile flexible electronic storage devices available. Carbon nanotubes (CNTs) are hollow-structured tubular nanomaterials with high electrical conductivity, large specific surface area, and excellent mechanical properties. Graphene (G) is to some extent comparable to CNTs, because both have unlimited value in flexible electrodes. Herein, a systematic summary of the application of CNT and G in FLIBs electrodes is presented, including different functional applications and services at different temperatures. Furthermore, the effects of electrode structures, including powder, wire-shaped, and film-shaped structures, on electrochemical properties is highlighted. The assembly structures of the FLIBs consisting of CNT and G-based flexible electrodes to realize different functions, including bendability, stretchability, foldability, self-healing, and self-detecting, are systematically reviewed. The current challenges and development prospects of flexible CNT and G-based flexible electrodes and corresponding FLIBs are discussed.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":570,"journal":{"name":"Frontiers in Energy","volume":"18 5","pages":"612 - 639"},"PeriodicalIF":3.1,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139464651","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

Gradient boosting dendritic network for ultra-short-term PV power prediction 梯度提升树枝状网络用于超短期光伏功率预测

IF 2.9 4区工程技术

Frontiers in Energy Pub Date : 2024-01-10 DOI: 10.1007/s11708-024-0915-y

Chunsheng Wang, Mutian Li, Yuan Cao, Tianhao Lu

{"title":"Gradient boosting dendritic network for ultra-short-term PV power prediction","authors":"Chunsheng Wang, Mutian Li, Yuan Cao, Tianhao Lu","doi":"10.1007/s11708-024-0915-y","DOIUrl":"https://doi.org/10.1007/s11708-024-0915-y","url":null,"abstract":"<p>To achieve effective intraday dispatch of photovoltaic (PV) power generation systems, a reliable ultra-short-term power generation forecasting model is required. Based on a gradient boosting strategy and a dendritic network, this paper proposes a novel ensemble prediction model, named gradient boosting dendritic network (GBDD) model which can reduce the forecast error by learning the relationship between forecast residuals and meteorological factors during the training of sub-models by means of a greedy function approximation. Unlike other machine learning models, the GBDD proposed is able to make fuller use of all meteorological factor data and has a good model interpretation. In addition, based on the structure of GBDD, this paper proposes a strategy that can improve the prediction performance of other types of prediction models. The GBDD is trained by analyzing the relationship between prediction errors and meteorological factors for compensating the prediction results of other prediction models. The experimental results show that the GBDD proposed has the benefit of achieving a higher PV power prediction accuracy for PV power generation and can be used to improve the prediction performance of other prediction models.</p>","PeriodicalId":570,"journal":{"name":"Frontiers in Energy","volume":"211 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139475405","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

Numerical study of novel OME1−6 combustion mechanism and spray combustion at changed ambient environments 新型 OME1-6 燃烧机理及变化环境下喷雾燃烧的数值研究

IF 3.1 4区工程技术

Frontiers in Energy Pub Date : 2024-01-10 DOI: 10.1007/s11708-024-0926-8

Frederik Wiesmann, Zeyan Qiu, Dong Han, Lukas Strauβ, Sebastian Rieβ, Michael Wensing, Thomas Lauer

{"title":"Numerical study of novel OME1−6 combustion mechanism and spray combustion at changed ambient environments","authors":"Frederik Wiesmann, Zeyan Qiu, Dong Han, Lukas Strauβ, Sebastian Rieβ, Michael Wensing, Thomas Lauer","doi":"10.1007/s11708-024-0926-8","DOIUrl":"10.1007/s11708-024-0926-8","url":null,"abstract":"<div><p>For a climate-neutral future mobility, the so-called e-fuels can play an essential part. Especially, oxygenated e-fuels containing oxygen in their chemical formula have the additional potential to burn with significantly lower soot levels. In particular, polyoxymethylene dimethyl ethers or oxymethylene ethers (PODEs or OMEs) do not contain carbon-carbon bonds, prohibiting the production of soot precursors like acetylene (C<sub>2</sub>H<sub>2</sub>). These properties make OMEs a highly interesting candidate for future climate-neutral compression-ignition engines. However, to fully leverage their potential, the auto-ignition process, flame propagation, and mixing regimes of the combustion need to be understood. To achieve this, efficient oxidation mechanisms suitable for computational fluid dynamics (CFD) calculations must be developed and validated. The present work aims to highlight the improvements made by developing an adapted oxidation mechanism for OME<sub>1−6</sub> and introducing it into a validated spray combustion CFD model for OMEs. The simulations were conducted for single- and multi-injection patterns, changing ambient temperatures, and oxygen contents. The results were validated against high-pressure and high-temperature constant-pressure chamber experiments. OH*-chemiluminescence measurements accomplished the characterization of the auto-ignition process. Both experiments and simulations were conducted for two different injectors. Significant improvements concerning the prediction of the ignition delay time were accomplished while also retaining an excellent agreement for the flame lift-off length. The spatial zones of high-temperature reaction activity were also affected by the adaption of the reaction kinetics. They showed a greater tendency to form OH* radicals within the center of the spray in accordance with the experiments.</p></div>","PeriodicalId":570,"journal":{"name":"Frontiers in Energy","volume":"18 4","pages":"483 - 505"},"PeriodicalIF":3.1,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11708-024-0926-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139760030","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

Statistical approach to design Zn particle size, shape, and crystallinity for alkaline batteries 用统计方法设计碱性电池的锌颗粒大小、形状和结晶度

IF 3.1 4区工程技术

Frontiers in Energy Pub Date : 2024-01-10 DOI: 10.1007/s11708-024-0904-1

Brian Lenhart, Devadharshini Kathan, Valerie Hiemer, Mike Zuraw, Matt Hull, William E. Mustain

{"title":"Statistical approach to design Zn particle size, shape, and crystallinity for alkaline batteries","authors":"Brian Lenhart, Devadharshini Kathan, Valerie Hiemer, Mike Zuraw, Matt Hull, William E. Mustain","doi":"10.1007/s11708-024-0904-1","DOIUrl":"10.1007/s11708-024-0904-1","url":null,"abstract":"<div><p>In modern alkaline batteries, the zinc anode is the performance-limiting and lifetime-limiting electrode, making the choice of zinc powder critical. Due to the various material fabrication processes that are used to manufacture industrial zinc powder, there exists a wide array of possible zinc particle shapes, sizes, and crystallinities. These industrial zinc powders are typically conceived, produced, and tested through trial-and-error processes using historical “rules of thumb.” However, a data-driven approach could more effectively elucidate the optimum combination of zinc particle properties. In this paper, the effect of Zn particle size, shape, and crystallinity on the achievable capacity and corrosion current is investigated. The Zn types are tested in both powder and slurry form. Following the data collection, a factorial-based statistical analysis is performed to determine the most statistically significant variables affecting capacity and corrosion. This information is then used to down-select to a subset of particles that are tested in cylindrical cells with an AA-equivalent geometry. The reported technique can be used to develop actionable principles for battery manufacturers to create cells that are more stable, longer lasting, and have higher energy densities.</p></div>","PeriodicalId":570,"journal":{"name":"Frontiers in Energy","volume":"18 5","pages":"650 - 664"},"PeriodicalIF":3.1,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139464510","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

Recent advances in co-processing biomass feedstock with petroleum feedstock: A review 生物质原料与石油原料共处理的最新进展：综述

IF 2.9 4区工程技术

Frontiers in Energy Pub Date : 2024-01-10 DOI: 10.1007/s11708-024-0920-1

Cong Wang, Tan Li, Wenhao Xu, Shurong Wang, Kaige Wang

{"title":"Recent advances in co-processing biomass feedstock with petroleum feedstock: A review","authors":"Cong Wang, Tan Li, Wenhao Xu, Shurong Wang, Kaige Wang","doi":"10.1007/s11708-024-0920-1","DOIUrl":"https://doi.org/10.1007/s11708-024-0920-1","url":null,"abstract":"<p>Co-processing of biomass feedstock with petroleum feedstock in existing refineries is a promising technology that enables the production of low-carbon fuels, reduces dependence on petroleum feedstock, and utilizes the existing infrastructure in refinery. Much effort has been dedicated to advancing co-processing technologies. Though significant progress has been made, the development of co-processing is still hindered by numerous challenges. Therefore, it is important to systematically summarize up-to-date research activities on co-processing process for the further development of co-processing technologies. This paper provides a review of the latest research activities on coprocessing biomass feedstock with petroleum feedstock utilizing fluid catalytic cracking (FCC) or hydrotreating (HDT) processes. In addition, it extensively discusses the influence of different types and diverse physicochemical properties of biomass feedstock on the processing of petroleum feedstock, catalysts employed in co-processing studies, and relevant projects. Moreover, it summarizes and discusses co-processing projects in pilot or larger scale. Furthermore, it briefly prospects the research trend of co-processing in the end.</p>","PeriodicalId":570,"journal":{"name":"Frontiers in Energy","volume":"27 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139554334","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

Numerical multi-physical optimization of operating condition and current collecting setup for large-area solid oxide fuel cells 对大面积固体氧化物燃料电池的运行条件和电流收集装置进行多物理量数值优化

IF 3.1 4区工程技术

Frontiers in Energy Pub Date : 2024-01-01 DOI: 10.1007/s11708-023-0919-z

Chengrong Yu, Zehua Pan, Hongying Zhang, Bin Chen, Wanbing Guan, Bin Miao, Siew Hwa Chan, Zheng Zhong, Yexin Zhou

{"title":"Numerical multi-physical optimization of operating condition and current collecting setup for large-area solid oxide fuel cells","authors":"Chengrong Yu, Zehua Pan, Hongying Zhang, Bin Chen, Wanbing Guan, Bin Miao, Siew Hwa Chan, Zheng Zhong, Yexin Zhou","doi":"10.1007/s11708-023-0919-z","DOIUrl":"10.1007/s11708-023-0919-z","url":null,"abstract":"<div><p>Due to the depletion of traditional fossil fuels and the aggravation of related environmental problems, hydrogen energy is gaining more attention all over the world. Solid oxide fuel cell (SOFC) is a promising power generation technology operating on hydrogen with a high efficiency. To further boost the power output of a single cell and thus a single stack, increasing the cell area is an effective route. However, it was recently found that further increasing the effective area of an SOFC single cell with a flat-tubular structure and symmetric double-sided cathodes would result in a lower areal performance. In this work, a multi-physical model is built to study the effect of the effective area on the cell performance. The distribution of different physical fields is systematically analyzed. Optimization of the cell performance is also pursued by systematically tuning the cell operating condition and the current collection setup. An improvement of 42% is revealed by modifying the inlet gas flow rates and by enhancing the current collection. In the future, optimization of cell geometry will be performed to improve the homogeneity of different physical fields and thus to improve the stability of the cell.</p></div>","PeriodicalId":570,"journal":{"name":"Frontiers in Energy","volume":"18 3","pages":"356 - 368"},"PeriodicalIF":3.1,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139475358","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

Dynamic simulation of GEH-IES with distributed parameter characteristics for hydrogen-blending transportation 用于氢气混合运输的具有分布式参数特征的 GEH-IES 的动态模拟

IF 3.1 4区工程技术

Frontiers in Energy Pub Date : 2023-12-31 DOI: 10.1007/s11708-023-0914-4

Dengji Zhou, Jiarui Hao, Wang Xiao, Chen Wang, Chongyuan Shui, Xingyun Jia, Siyun Yan

{"title":"Dynamic simulation of GEH-IES with distributed parameter characteristics for hydrogen-blending transportation","authors":"Dengji Zhou, Jiarui Hao, Wang Xiao, Chen Wang, Chongyuan Shui, Xingyun Jia, Siyun Yan","doi":"10.1007/s11708-023-0914-4","DOIUrl":"10.1007/s11708-023-0914-4","url":null,"abstract":"<div><p>For the purpose of environment protecting and energy saving, renewable energy has been distributed into the power grid in a considerable scale. However, the consuming capacity of the power grid for renewable energy is relatively limited. As an effective way to absorb the excessive renewable energy, the power to gas (P2G) technology is able to convert excessive renewable energy into hydrogen. Hydrogen-blending natural gas pipeline is an efficient approach for hydrogen transportation. However, hydrogen-blending natural gas complicates the whole integrated energy system (IES), making it more problematic to cope with the equipment failure, demand response and dynamic optimization. Nevertheless, dynamic simulation of distribution parameters of gas–electricity–hydrogen (GEH) energy system, especially for hydrogen concentration, still remains a challenge. The dynamics of hydrogen-blending IES is undiscovered. To tackle the issue, an iterative solving framework of the GEH-IES and a cell segment-based method for hydrogen mixing ratio distribution are proposed in this paper. Two typical numerical cases studying the conditions under which renewables fluctuate and generators fail are conducted on a real-word system. The results show that hydrogen blending timely and spatially influences the flow parameters, of which the hydrogen mixing ratio and gas pressure loss along the gas pipeline are negatively correlated and the response to hydrogen mixing ratio is time-delayed. Moreover, the hydrogen-blending amount and position also have a significant impact on the performance of the compressor.</p></div>","PeriodicalId":570,"journal":{"name":"Frontiers in Energy","volume":"18 4","pages":"506 - 524"},"PeriodicalIF":3.1,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139475264","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

Multi-timescale optimization scheduling of interconnected data centers based on model predictive control 基于模型预测控制的互联数据中心多时间尺度优化调度

IF 3.1 4区工程技术

Frontiers in Energy Pub Date : 2023-12-20 DOI: 10.1007/s11708-023-0912-6

Xiao Guo, Yanbo Che, Zhihao Zheng, Jiulong Sun

引用次数: 0

Performance of iron-air battery with iron nanoparticle-encapsulated C-N composite electrode 铁纳米粒子封装 C-N 复合电极的铁-空气电池性能

IF 3.1 4区工程技术

Frontiers in Energy Pub Date : 2023-12-05 DOI: 10.1007/s11708-023-0913-5

Can Fang, Xiangmei Tang, Jiaoyan Wang, Qingfeng Yi

引用次数: 0

Enhanced photoelectrochemical water splitting with a donor-acceptor polyimide 用给受体聚酰亚胺增强光电化学水分解

IF 3.1 4区工程技术

Frontiers in Energy Pub Date : 2023-11-30 DOI: 10.1007/s11708-023-0910-8

Hongyu Qu, Xiaoyu Xu, Longfei Hong, Xintie Wang, Yifei Zan, Huiyan Zhang, Xiao Zhang, Sheng Chu

{"title":"Enhanced photoelectrochemical water splitting with a donor-acceptor polyimide","authors":"Hongyu Qu, Xiaoyu Xu, Longfei Hong, Xintie Wang, Yifei Zan, Huiyan Zhang, Xiao Zhang, Sheng Chu","doi":"10.1007/s11708-023-0910-8","DOIUrl":"10.1007/s11708-023-0910-8","url":null,"abstract":"<div><p>Polyimide (PI) has emerged as a promising organic photocatalyst owing to its distinct advantages of high visible-light response, facile synthesis, molecularly tunable donor-acceptor structure, and excellent physicochemical stability. However, the synthesis of high-quality PI photoelectrode remains a challenge, and photoelectrochemical (PEC) water splitting for PI has been less studied. Herein, the synthesis of uniform PI photoelectrode films via a simple spin-coating method was reported, and their PEC properties were investigated using melamine as donor and various anhydrides as acceptors. The influence of the conjugate size of aromatic unit (phenyl, biphenyl, naphthalene, perylene) of electron acceptor on PEC performance were studied, where naphthalene-based PI photoelectrode exhibited the highest photocurrent response. This is resulted from the unification of wide-range light absorption, efficient charge separation and transport, and strong photooxidation capacity. This paper expands the material library of polymer films for PEC applications and contributes to the rational design of efficient polymer photoelectrodes.</p></div>","PeriodicalId":570,"journal":{"name":"Frontiers in Energy","volume":"18 4","pages":"463 - 473"},"PeriodicalIF":3.1,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138526575","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