Energy最新文献_第4页

District heating resilience under high energy price shocks 高能源价格冲击下的区域供热复原力

IF 9 1区工程技术

Energy Pub Date : 2025-03-27 DOI: 10.1016/j.energy.2025.135855

Ieva Pakere, Lauma Balode, Guntars Krīgers, Dagnija Blumberga

{"title":"District heating resilience under high energy price shocks","authors":"Ieva Pakere, Lauma Balode, Guntars Krīgers, Dagnija Blumberga","doi":"10.1016/j.energy.2025.135855","DOIUrl":"10.1016/j.energy.2025.135855","url":null,"abstract":"<div><div>Maintaining sustainable heating price levels is a crucial aspect of the future development of district heating (DH) systems to provide a low-carbon and affordable heat supply. The recent extreme increase in resource prices during the energy crisis in 2022/2023 has raised an important question of how to increase the overall resilience of energy systems. This research focuses particularly on the ability of DH systems to maintain affordable heat price levels under significantly increased resource prices. The simple definition of resilience has been attributed to the ability of a system to recover from adversity. A novel resilience capacity quantification methodology has been applied. The research analyses 10 different DH systems in Latvia with various heat production technologies and fuel mixes and their changes in heat prices from 2021 to 2023. The study identifies the resilience curves of each DH system and compares their ability to recover after the disruption. A composite resilience index has been developed for the DH supply systems of several municipalities in Latvia. To construct the DH resilience composite index, indicators were selected and grouped into four dimensions: technical, economic, environmental, and social. The DH resilience composite index merges fourteen criteria and compares which DH systems are more resilient to extreme changes in external conditions.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"323 ","pages":"Article 135855"},"PeriodicalIF":9.0,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143735101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Under complex wind scenarios: Considering large-scale wind turbines in wind farm layout optimization via self-adaptive optimal fractional-order guided differential evolution

IF 9 1区工程技术

Energy Pub Date : 2025-03-27 DOI: 10.1016/j.energy.2025.135866

Yujun Zhang , Zihang Zhang , Rui Zhong , Jun Yu , Essam H. Houssein , Juan Zhao , Zhengming Gao

{"title":"Under complex wind scenarios: Considering large-scale wind turbines in wind farm layout optimization via self-adaptive optimal fractional-order guided differential evolution","authors":"Yujun Zhang , Zihang Zhang , Rui Zhong , Jun Yu , Essam H. Houssein , Juan Zhao , Zhengming Gao","doi":"10.1016/j.energy.2025.135866","DOIUrl":"10.1016/j.energy.2025.135866","url":null,"abstract":"<div><div>Wind energy has become a crucial solution for reducing environmental pollution through electricity generation. However, the wake effect between different wind turbines significantly impacts the efficiency of power generation in wind farms. Wind farm layout optimization (WFLO) seeks to mitigate the wake effect and improve overall energy conversion efficiency by optimizing turbine placement. As the number of turbines increases, maintaining high efficiency becomes more challenging, testing the performance of optimization algorithms. But existing algorithms often overlook valuable historical information, which can be crucial for improving optimization efficiency. Therefore, this paper proposes self-adaptive optimal fractional-order guided differential evolution algorithm (SaOFGDE) optimizing large-scale and complex WFLO. In SaOFGDE, classification crossover rate update approach based on historical information weighting is proposed to enhance the mutation efficiency of individuals. Secondly, the optimal fractional-order calculus method is designed to make high use of the information of historical individuals, which can provide more accurate derivative approximations to help individuals make optimal decisions. SaOFGDE is tested on four extremely complex WFLO in four large wind farms, comparing with eight well-established algorithms. The results show that SaOFGDE still improves the conversion efficiency by an average of 2.64 %, 5.10 %, 3.04 % and 3.86 % respectively under the largest wind turbine setting.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"323 ","pages":"Article 135866"},"PeriodicalIF":9.0,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Optimization of electric vehicle charging station layout considering the improvement of distribution network resilience under extreme disasters 优化电动汽车充电站布局，考虑提高极端灾害下配电网的抗灾能力

IF 9 1区工程技术

Energy Pub Date : 2025-03-27 DOI: 10.1016/j.energy.2025.135831

Haozhou Mei , Qiong Wu , Hongbo Ren , Jinli Zhang , Qifen Li

{"title":"Optimization of electric vehicle charging station layout considering the improvement of distribution network resilience under extreme disasters","authors":"Haozhou Mei , Qiong Wu , Hongbo Ren , Jinli Zhang , Qifen Li","doi":"10.1016/j.energy.2025.135831","DOIUrl":"10.1016/j.energy.2025.135831","url":null,"abstract":"<div><div>The challenge posed by extreme natural disasters to the resilience of power distribution networks is growing increasingly severe. Electric vehicles, as distributed and mobile energy storage devices, have the potential to enhance the resilience of distribution networks through vehicle to grid technology. In this study, resilience is integrated into the evaluation metrics for charging station layout planning, and a methodology for the layout of electric vehicle charging stations is proposed, balancing both economy and resilience. After constructing a typical extreme disaster scenario model using typhoons as an example, a resilience deployment model for charging stations is developed, which comprehensively considers the resilience of the distribution network and traffic flow. The objective function is designed to minimize the annual total social cost, which includes factors such as construction and operation costs, user usage costs, charging loss costs, and resilience configuration costs. A joint solution algorithm, combining the Voronoi diagram and particle swarm optimization algorithm, is proposed to solve the model. According to the simulation results of an illustrative example, the resilience optimization scenario performs well in terms of load loss penalty. This indicates that, in extreme disaster situations, this planning approach can effectively mitigate losses caused by power outages and improve the reliability and stability of the power system.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"323 ","pages":"Article 135831"},"PeriodicalIF":9.0,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Injectable conductive hydroxylamine nitrate ionic gel materials crosslinked by xanthan gum for ultra-fast multiple ignitions response via electrical stimulation 由黄原胶交联的可注射传导性硝酸羟胺离子凝胶材料，通过电刺激实现超快多次点火响应

IF 9 1区工程技术

Energy Pub Date : 2025-03-27 DOI: 10.1016/j.energy.2025.135872

Chuntian Li , Lian Li , Zhidong Wang , Qianyi Zhang , Hanwen Zhang , Zhiwen Wang , Ruiqi Shen , Luigi T. De Luca , Wei Zhang

{"title":"Injectable conductive hydroxylamine nitrate ionic gel materials crosslinked by xanthan gum for ultra-fast multiple ignitions response via electrical stimulation","authors":"Chuntian Li , Lian Li , Zhidong Wang , Qianyi Zhang , Hanwen Zhang , Zhiwen Wang , Ruiqi Shen , Luigi T. De Luca , Wei Zhang","doi":"10.1016/j.energy.2025.135872","DOIUrl":"10.1016/j.energy.2025.135872","url":null,"abstract":"<div><div>To achieve accurate and adjustable propulsion power, it is essential to utilize propellant materials undergoing repeated ignition and combustion cycles. Injectable gel propellant materials possess superior mechanical properties and fluidity, allowing for the regulation of their combustion process through the precise control of flow rate. Herein, an injectable conductive ion gel which uses hydroxylamine nitrate ([NH<sub>3</sub>OH]<sup>+</sup>[NO<sub>3</sub>]<sup>-</sup>, HAN) high-energy ion salt as matrix and lithium perchlorate ([Li]<sup>+</sup>[ClO<sub>4</sub>]<sup>-</sup>, LP) and ammonium nitrate ([NH<sub>4</sub>]<sup>+</sup>[NO<sub>3</sub>]<sup>-</sup>, AN) ion salt to adjust its conductivity was reported. The components of this injectable conductive gel material exhibit high compatibility, as confirmed by XPS and FT-IR analysis, and the uniqueness of the conversion between liquid and solid has established a good supply property. After centrifugation at 5000 r·min<sup>-1</sup> for 15 min, the eccentricity was only 0.6%, demonstrating its excellent stability. Compared with the existing gel propellant materials, its ignition delay time in a single ignition test reached 700ms under 225V and 8ml·min<sup>-1</sup>. More importantly, the ignition delay can be reduced to around 200ms after multiple repeated ignition tests, indicating an ultra-fast response phenomenon that rarely occurs in most of the research process, paving the way for realizing the ultrafast multiple repeated application of gel propellant materials in space propulsion.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"323 ","pages":"Article 135872"},"PeriodicalIF":9.0,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143735099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Experimental and numerical investigation of spray cooling based photovoltaic/thermal system: Achieving high performance, low cost, and lightweight design

IF 9 1区工程技术

Energy Pub Date : 2025-03-27 DOI: 10.1016/j.energy.2025.135671

Yang Zhao , Feng Wang , Zipeng Xu , Chao Cheng , Dan Gao , Heng Zhang , Yuting Wang

{"title":"Experimental and numerical investigation of spray cooling based photovoltaic/thermal system: Achieving high performance, low cost, and lightweight design","authors":"Yang Zhao , Feng Wang , Zipeng Xu , Chao Cheng , Dan Gao , Heng Zhang , Yuting Wang","doi":"10.1016/j.energy.2025.135671","DOIUrl":"10.1016/j.energy.2025.135671","url":null,"abstract":"<div><div>In an age where the world faces increasing energy demands and environmental concerns, efficient and sustainable renewable energy solutions are imperative. This study investigates spray cooling as a promising approach to address conventional PV/T limitations in thermal management, reliability, and cost. Experimental and numerical analyses under realistic conditions demonstrate that the spray-cooled PV/T can achieve over 9 % power improvement versus PV, while reducing PV surface temperatures from 35 °C to 23.1 °C even under winter operation. Critically, spray cooling eliminates localized high-stress regions observed in conventional water-cooled PV/T (maximum stress: 106 MPa; deformation: 26 mm), ensuring structural integrity during prolonged operation. Economically, the spray cooling PV/T reduces the levelized cost of electricity (LCOE) compared to conventional PV/T under the different discount rates and O&M costs, with annual savings of 16.04 billion USD (1.5‱ of global GDP) through reduced installed capacity and optimized thermal energy recovery. Environmentally, it achieves reductions in water consumption (1.4‱ of global freshwater usage), land use (0.07‱ of non-arable area), and manufacturing-related greenhouse gas emissions (0.4‱ of global totals). By integrating lightweight design, efficient heat dissipation, and low-cost investigation, this work establishes spray cooling as a scalable pathway to enable widespread adoption of PV/T systems.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"323 ","pages":"Article 135671"},"PeriodicalIF":9.0,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

The effects of injection timings on the spray and combustion of automobile engines fueled with diesel/methanol under cross and horizontal injection

IF 9 1区工程技术

Energy Pub Date : 2025-03-27 DOI: 10.1016/j.energy.2025.135857

Pengyun Zhao , Lvmeng Huang , Zhanming Chen , Haibin He , Jie Wu , Long Wang , Xiongbo Duan , Hao Chen

{"title":"The effects of injection timings on the spray and combustion of automobile engines fueled with diesel/methanol under cross and horizontal injection","authors":"Pengyun Zhao , Lvmeng Huang , Zhanming Chen , Haibin He , Jie Wu , Long Wang , Xiongbo Duan , Hao Chen","doi":"10.1016/j.energy.2025.135857","DOIUrl":"10.1016/j.energy.2025.135857","url":null,"abstract":"<div><div>In this paper, the spray and combustion characteristics of diesel/methanol under different injection angles (IA) and diesel injection time delay (Δt) are studied on a constant volume combustion chamber using optical diagnosis techniques. The results show that changing the IA and Δt can effectively change the diesel/methanol mixture distribution and achieve both concentration stratification and reactivity stratification. The collision length, collision width, and spray projected area of 90° IA are all greater than those of 180° IA. In addition, increasing Δt promotes the diffusion and evaporation of collision spray, resulting in a larger liquid phase and vapor phase spray projected area. Compared to 90° IA, 180° IA enhances the relative speed and collision strength of the two jets and also reduces the equivalence ratio of the collision jet, thereby inhibiting diesel spontaneous combustion and extending ignition delay. This results in a more intense combustion process, with shorter combustion duration, and lower soot emissions. Furthermore, the increase in Δt additionally allows the diesel methanol collision spray to obtain a longer ignition delay, a shorter combustion duration, a smaller flame area, and less soot emission, all of which can greatly improve the combustion and emission characteristics of an internal combustion engine.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"323 ","pages":"Article 135857"},"PeriodicalIF":9.0,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Spatial-temporal variation and coupling relationship between primary energy consumption and economic growth: A global assessment

IF 9 1区工程技术

Energy Pub Date : 2025-03-27 DOI: 10.1016/j.energy.2025.135873

Changhe Wei , Shaobin Wang , Xiaofeng Zhao

{"title":"Spatial-temporal variation and coupling relationship between primary energy consumption and economic growth: A global assessment","authors":"Changhe Wei , Shaobin Wang , Xiaofeng Zhao","doi":"10.1016/j.energy.2025.135873","DOIUrl":"10.1016/j.energy.2025.135873","url":null,"abstract":"<div><div>This paper evaluated the spatial-temporal variation and coupling relationship between global primary energy consumption and economic growth from 1965 to 2020. Spatial autocorrelation analysis, coupling and coordination degree model, and the auto-regressive integrated moving average (ARIMA) model were applied. Also, we analyzed the regional inequality of global energy consumption with the Dagum Gini coefficient and decomposition method. The results presented diversity and heterogeneity of global energy consumption with impressive growth. Regional inequality has decreased or kept stable over time at a high level. The inter-regional disparity is the primary source of regional inequality in all energy consumption types. Under the multi-polar framework with weaker spatial clustering, the degree of global coupling coordination of FEC with economic growth has significantly improved, and a high level of coupling and coordination has been achieved since 2005. In contrast, except for China and the U.S., most countries exhibited a current and long-term uncoupling and imbalance between non-fossil energy consumption and GDP. According to the trend forecast, major energy consumers struggle to meet their prospective REC or NFEC targets without further action. The study highlights the urgency for coordinated strategies addressing regional heterogeneity in energy transition pathways while maintaining economic growth.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"323 ","pages":"Article 135873"},"PeriodicalIF":9.0,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Application of a multi-reservoir dynamic collaborative optimization strategy based on extrema marginal benefits for optimizing reservoir operation

IF 9 1区工程技术

Energy Pub Date : 2025-03-27 DOI: 10.1016/j.energy.2025.135867

Lingxi Li, Yonggang Wu, Xiaohui Shen

{"title":"Application of a multi-reservoir dynamic collaborative optimization strategy based on extrema marginal benefits for optimizing reservoir operation","authors":"Lingxi Li, Yonggang Wu, Xiaohui Shen","doi":"10.1016/j.energy.2025.135867","DOIUrl":"10.1016/j.energy.2025.135867","url":null,"abstract":"<div><div>Despite the numerous methods proposed for optimizing reservoir operation, few strategies effectively guarantee both solution optimality and efficiency. Therefore, this study proposes an extrema marginal benefits optimization method that rapidly maximizes benefits by adjusting water usage during periods of maximum and minimum marginal benefits. Given that the single-reservoir optimization model can result in a pseudo-optimal solution, this study builds on a rotational optimization model for individual reservoirs to introduce a multi-reservoir dynamic collaborative optimization strategy. This strategy targets various reservoir-boundary challenges, clearly identifying and synchronously optimizing collaborating reservoirs, thereby significantly improving the operational efficiency and optimization quality of multi-reservoir systems. The operation results of the hydropower station indicate that extrema marginal benefits optimization guarantees optimal solutions with minimal time consumption, even under high-precision conditions, where the solution time is less than one-thousandth of that required by dynamic programming. In the operation scenarios for systems with four and ten reservoirs, the multi-reservoir dynamic collaborative optimization strategy based on extrema marginal benefits reached the theoretical optimum, with the solving time never exceeding 1 s, thereby proving its efficiency and practicality.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"324 ","pages":"Article 135867"},"PeriodicalIF":9.0,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Evaluation of multi-mode shared combustor with different flame holder designs for an innovative turbo-ramjet combined cycle engine

IF 9 1区工程技术

Energy Pub Date : 2025-03-27 DOI: 10.1016/j.energy.2025.135875

Kai Zhang , Xuanfei Yu , Duo Zhang , Jian Guo , Fei Qin

{"title":"Evaluation of multi-mode shared combustor with different flame holder designs for an innovative turbo-ramjet combined cycle engine","authors":"Kai Zhang , Xuanfei Yu , Duo Zhang , Jian Guo , Fei Qin","doi":"10.1016/j.energy.2025.135875","DOIUrl":"10.1016/j.energy.2025.135875","url":null,"abstract":"<div><div>Air-breathing combined cycle propulsion is critical for realizing sustained long range hypersonic flying. Indexes like combustion efficiency and total pressure recovery are commonly employed in combustor design evaluations. However, the opposite trends encountered making these indexes occasionally falls short to effectively guide the design trade-offs of combustor concerning the complicated full-envelope combustion organization requirements of combined-cycle engine like FABRE. On account of this, in current study a system-level design evaluation method for FABRE multi-modal combustor is developed through integrating of combustor numerical simulations with engine performance assessment model. The method is then applied to evaluate a combustor designed with three representative flame holder schemes. Results show that the scheme without intermediate strut assembly and with half invasion depth strut assembly delivers superior performance in ramjet mode at Mach 3–4 and 5–6 respectively. The scheme with full length intermediate strut assembly nevertheless shows significant performance advantage in turbocharged mode. Considering each of the scheme evaluated possesses distinct advantage over some specified operation range, an adaptable scheme with a retractable intermediate strut assembly is identified as the optimal solution for FABRE wide-operating-range multi-modal shared combustor. This study may be helpful to provide some crucial guidance for the design of complex combustion systems.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"323 ","pages":"Article 135875"},"PeriodicalIF":9.0,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Hydrogen, methane and power tri-generation from coal-based fuels in protonic ceramic fuel cells 在质子陶瓷燃料电池中利用煤基燃料产生氢气、甲烷和电能三项能源

IF 9 1区工程技术

Energy Pub Date : 2025-03-27 DOI: 10.1016/j.energy.2025.135874

Haojie Zhu , Junbiao Li , Yuan Zhang , Zhipeng Liu , Junda You , Guoqing Ma , Ling Fu , Senran Hao , Hongxin Yang , Shuo Zhai , Pengfei Wang , Jing Zhu , Suling Shen , Jialiang Chen , Ying Teng , Bin Chen , Heping Xie

{"title":"Hydrogen, methane and power tri-generation from coal-based fuels in protonic ceramic fuel cells","authors":"Haojie Zhu , Junbiao Li , Yuan Zhang , Zhipeng Liu , Junda You , Guoqing Ma , Ling Fu , Senran Hao , Hongxin Yang , Shuo Zhai , Pengfei Wang , Jing Zhu , Suling Shen , Jialiang Chen , Ying Teng , Bin Chen , Heping Xie","doi":"10.1016/j.energy.2025.135874","DOIUrl":"10.1016/j.energy.2025.135874","url":null,"abstract":"<div><div>The traditional utilization of coal fuels is primarily through direct combustion to generate electricity, with low efficiency and significant carbon dioxide emissions conflicting with the goal of carbon neutrality. Here, for the first time, we proposed a novel electrochemical system to achieve the tri-generation of hydrogen, power, and methane from coal-based fuels, with CO<sub>2</sub> emission efficiency reduced in tail gas, enabled by protonic ceramic fuel cells (PCFCs) combined with water gasification of coal and CO<sub>2</sub> methanation. As demonstrated, the system firstly achieved an enhanced hydrogen production rate of up to 34.8 μmol min<sup>−1</sup> g<sup>−1</sup> from the syngas produced by coal gasification. Sequentially, the system achieved an excellent peak power density of 868 mW cm<sup>−2</sup> at 600 °C in the PCFCs fueled by the syngas, enhanced by a catalytic functional layer (CFL, NiMn@YSZ). In addition, the system is able to produce methane at 6.3 mL min<sup>−1</sup> during in-situ CO<sub>2</sub> methanation at 500 °C with a current density of 110 mA cm<sup>−2</sup>. This work introduces a new electrochemical strategy for efficiently utilizing coal to generate electricity and value-added chemicals.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"323 ","pages":"Article 135874"},"PeriodicalIF":9.0,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143735102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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