Frontiers in Energy最新文献_第2页

Plasma-assisted ammonia synthesis under mild conditions for hydrogen and electricity storage: Mechanisms, pathways, and application prospects 在温和条件下等离子体辅助合成氨，用于储氢和储电：机理、途径和应用前景

IF 3.1 4区工程技术

Frontiers in Energy Pub Date : 2024-06-20 DOI: 10.1007/s11708-024-0949-1

Feng Gong, Yuhang Jing, Rui Xiao

{"title":"Plasma-assisted ammonia synthesis under mild conditions for hydrogen and electricity storage: Mechanisms, pathways, and application prospects","authors":"Feng Gong, Yuhang Jing, Rui Xiao","doi":"10.1007/s11708-024-0949-1","DOIUrl":"10.1007/s11708-024-0949-1","url":null,"abstract":"<div>Ammonia, with its high hydrogen storage density of 17.7 wt.% (mass fraction), cleanliness, efficiency, and renewability, presents itself as a promising zero-carbon fuel. However, the traditional Haber–Bosch (H–B) process for ammonia synthesis necessitates high temperature and pressure, resulting in over 420 million tons of carbon dioxide emissions annually, and relies on fossil fuel consumption. In contrast, dielectric barrier discharge (DBD) plasma-assisted ammonia synthesis operates at low temperatures and atmospheric pressures, utilizing nitrogen and hydrogen radicals excited by energetic electrons, offering a potential alternative to the H-B process. This method can be effectively coupled with renewable energy sources (such as solar and wind) for environmentally friendly, distributed, and efficient ammonia production. This review delves into a comprehensive analysis of the low-temperature DBD plasma-assisted ammonia synthesis technology at atmospheric pressure, covering the reaction pathway, mechanism, and catalyst system involved in plasma nitrogen fixation. Drawing from current research, it evaluates the economic feasibility of the DBD plasmaassisted ammonia synthesis technology, analyzes existing dilemmas and challenges, and provides insights and recommendations for the future of nonthermal plasma ammonia processes.</div>","PeriodicalId":570,"journal":{"name":"Frontiers in Energy","volume":"18 4","pages":"418 - 435"},"PeriodicalIF":3.1,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141506179","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

Pyrochlore La2Zr2–xNixO7 anodes for direct ammonia solid oxide fuel cells 用于直接氨固态氧化物燃料电池的热长石 La2Zr2-xNixO7 阳极

IF 3.1 4区工程技术

Frontiers in Energy Pub Date : 2024-06-01 DOI: 10.1007/s11708-024-0948-2

Shiqing Yang, Yijie Gao, Xinmin Wang, Fulan Zhong, Huihuang Fang, Yu Luo, Lilong Jiang

{"title":"Pyrochlore La2Zr2–xNixO7 anodes for direct ammonia solid oxide fuel cells","authors":"Shiqing Yang, Yijie Gao, Xinmin Wang, Fulan Zhong, Huihuang Fang, Yu Luo, Lilong Jiang","doi":"10.1007/s11708-024-0948-2","DOIUrl":"10.1007/s11708-024-0948-2","url":null,"abstract":"<div>Developing efficient anode catalysts for direct ammonia solid oxide fuel cells (NH3-SOFCs) under intermediate-temperatures is of great importance, in support of hydrogen economy via ammonia utilization. In the present work, the pyrochlore-type La2Zr2−xNixO7+δ (LZNx, x = 0, 0.02, 0.05, 0.08, 0.10) oxides were synthesized as potential anode catalysts of NH3-SOFCs due to the abundant Frankel defect that contributes to the good conductivity and oxygen ion mobility capacity. The effects of different content of Ni2+ doping on the crystal structure, surface morphology, thermal matching with YSZ (Yttria-stabilized zirconia), conductivity, and electrochemical performance of pyrochlore oxides were examined using different characterization techniques. The findings indicate that the LZNx oxide behaves as an n-type semiconductor and exhibits an excellent high-temperature chemical compatibility and thermal matching with the YSZ electrolyte. Furthermore, LZN0.05 exhibits the smallest conductive band potential and bandgap, making it have a higher power density as anode material for NH3-SOFCs compared to other anodes. As a result, the maximum power density of the LZN0.05-40YSZ composite anode reaches 100.86 mW/cm2 at 800 °C, which is 1.8 times greater than that of NiO-based NH3-SOFCs (56.75 mW/cm2) under identical flow rate and temperature conditions. The extended durability indicates that the NH3-SOFCs utilizing the LZN0.05-40YSZ composite anode exhibits a negligible voltage degradation following uninterrupted operation at 800 °C for 100 h.</div>","PeriodicalId":570,"journal":{"name":"Frontiers in Energy","volume":"18 5","pages":"699 - 711"},"PeriodicalIF":3.1,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141254358","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

Data-driven consumer-phase identification in low-voltage distribution networks considering prosumers 低压配电网络中考虑到专业消费者的数据驱动型消费阶段识别

IF 2.9 4区工程技术

Frontiers in Energy Pub Date : 2024-05-10 DOI: 10.1007/s11708-024-0946-4

Geofrey Mugerwa, Tamer F. Megahed, Maha Elsabrouty, Sobhy M. Abdelkader

{"title":"Data-driven consumer-phase identification in low-voltage distribution networks considering prosumers","authors":"Geofrey Mugerwa, Tamer F. Megahed, Maha Elsabrouty, Sobhy M. Abdelkader","doi":"10.1007/s11708-024-0946-4","DOIUrl":"https://doi.org/10.1007/s11708-024-0946-4","url":null,"abstract":"Knowing the correct phase connectivity information plays a significant role in maintaining high-quality power and reliable electricity supply to end-consumers. However, managing the consumer-phase connectivity of a low-voltage distribution network is often costly, prone to human errors, and time-intensive, as it involves either installing expensive high-precision devices or employing field-based methods. Besides, the ever-increasing electricity demand and the proliferation of behind-the-meter resources have also increased the complexity of leveraging the phase connectivity problem. To overcome the above challenges, this paper develops a data-driven model to identify the phase connectivity of end-consumers using advanced metering infrastructure voltage and current measurements. Initially, a preprocessing method that employs linear interpolation and singular value decomposition is adopted to improve the quality of the smart meter data. Then, using Kirchoff’s current law and correlation analysis, a discrete convolution optimization model is built to uniquely identify the phase to which each end-consumer is connected. The data sets utilized are obtained by performing power flow simulations on a modified IEEE-906 test system using OpenDSS software. The robustness of the model is tested against data set size, missing smart meter data, measurement errors, and the influence of prosumers. The results show that the method proposed correctly identifies the phase connections of end-consumers with an accuracy of about 98%.","PeriodicalId":570,"journal":{"name":"Frontiers in Energy","volume":"160 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140936179","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

Reverse electrodialysis heat engine with helium-gap diffusion distillation: Energy efficiency analysis 带氦隙扩散蒸馏的反向电渗析热机：能效分析

IF 2.9 4区工程技术

Frontiers in Energy Pub Date : 2024-04-30 DOI: 10.1007/s11708-024-0947-3

Junyong Hu, Yukun Sun, Yali Hu, Haiyu Liu, Jiajie Zhang, Suxia Ma, Jiaxin Huang, Xueyi Tan, Ling Zhao

{"title":"Reverse electrodialysis heat engine with helium-gap diffusion distillation: Energy efficiency analysis","authors":"Junyong Hu, Yukun Sun, Yali Hu, Haiyu Liu, Jiajie Zhang, Suxia Ma, Jiaxin Huang, Xueyi Tan, Ling Zhao","doi":"10.1007/s11708-024-0947-3","DOIUrl":"https://doi.org/10.1007/s11708-024-0947-3","url":null,"abstract":"The depletion of energy resources poses a significant threat to the development of human society. Specifically, a considerable amount of low-grade heat (LGH), typically below 100 °C, is currently being wasted. However, efficient utilization of this LGH can relieve energy shortages and reduce carbon dioxide emissions. To address this challenge, reverse electrodialysis heat engine (REDHE) which can efficiently convert LGH into electricity has emerged as a promising technology in recent years. Extensive efforts have been dedicated to exploring more suitable thermal distillation technologies for enhancing the performance of REDHE. This paper introduces a novel REDHE that incorporates helium-gap diffusion distillation (HGDD) as the thermal separation (TS) unit. The HGDD device is highly compact and efficient, operating at a normal atmospheric pressure, which aligns with the operational conditions of the reverse electrodialysis (RED) unit. A validated mathematical model is employed to analyze the impacts of various operating and structural parameters on the REDHE performance. The results indicate that maintaining a moderate molality of the cold stream, elevating the inlet temperatures of hot and cold streams, lengthening hot- and cold-stream channels, and minimizing the thickness of helium gaps contribute to improving the REDHE performance. Especially, a maximum energy conversion efficiency of 2.96% is achieved by the REDHE when decreasing the thickness of helium gaps to 3 mm and increasing the length of stream channels to 5 m.","PeriodicalId":570,"journal":{"name":"Frontiers in Energy","volume":"89 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140838083","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

Scientometric analysis of research trends on solid oxide electrolysis cells for green hydrogen and syngas production 对用于生产绿色氢气和合成气的固体氧化物电解槽研究趋势的科学计量分析

IF 3.1 4区工程技术

Frontiers in Energy Pub Date : 2024-04-30 DOI: 10.1007/s11708-024-0945-5

Shimeng Kang, Zehua Pan, Jinjie Guo, Yexin Zhou, Jingyi Wang, Liangdong Fan, Chunhua Zheng, Suk Won Cha, Zheng Zhong

{"title":"Scientometric analysis of research trends on solid oxide electrolysis cells for green hydrogen and syngas production","authors":"Shimeng Kang, Zehua Pan, Jinjie Guo, Yexin Zhou, Jingyi Wang, Liangdong Fan, Chunhua Zheng, Suk Won Cha, Zheng Zhong","doi":"10.1007/s11708-024-0945-5","DOIUrl":"10.1007/s11708-024-0945-5","url":null,"abstract":"<div>Solid oxide electrolysis cell (SOEC) is a promising water electrolysis technology that produces hydrogen or syngas through water electrolysis or water and carbon dioxide co-electrolysis. Green hydrogen or syngas can be produced by SOEC with renewable energy. Thus, SOEC has attracted continuous attention in recent years for the urgency of developing environmentally friendly energy sources and achieving carbon neutrality. Focusing on 1276 related articles retrieved from the Web of Science (WoS) database, the historical development of SOECs are depicted from 1983 to 2023 in this paper. The co-occurrence networks of the countries, source journals, and author keywords are generated. Moreover, three main clusters showing different content of the SOEC research are identified and analyzed. Furthermore, the scientometric analysis and the content of the high-cited articles of the research of different topics of SOECs: fuel electrode, air electrode, electrolyte, co-electrolysis, proton-conducting SOECs, and the modeling of SOECs are also presented. The results show that co-electrolysis and proton-conducting SOECs are two popular directions in the study of SOECs. This paper provides a straightforward reference for researchers interested in the field of SOEC research, helping them navigate the landscape of this area of study, locate potential partners, secure funding, discover influential scholars, identify leading countries, and access key research publications.</div>","PeriodicalId":570,"journal":{"name":"Frontiers in Energy","volume":"18 5","pages":"583 - 611"},"PeriodicalIF":3.1,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140885736","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

Special issue on electrochemical conversion and utilization of hydrogen energy 电化学转换和利用氢能特刊

IF 3.1 4区工程技术

Frontiers in Energy Pub Date : 2024-04-15 DOI: 10.1007/s11708-024-0944-6

Yun Zheng, Bo Yu, Xiaogang Fu, Jiujun Zhang

引用次数: 0

Special issue on electrochemical energy storage and conversion 电化学储能与转换特刊

IF 3.1 4区工程技术

Frontiers in Energy Pub Date : 2024-04-10 DOI: 10.1007/s11708-024-0942-8

Yun Zheng, Gaixia Zhang, Sixu Deng, Jiujun Zhang

引用次数: 0

Experimental study on current distribution in parallel-connected solid oxide fuel cell strings 并联固体氧化物燃料电池串电流分布实验研究

IF 2.9 4区工程技术

Frontiers in Energy Pub Date : 2024-04-01 DOI: 10.1007/s11708-024-0941-9

Jia Lu, Qiang Hu, Jian Wu

引用次数: 0

Catalytic hydrodeoxygenation of pyrolysis bio-oil to jet fuel: A review 热解生物油催化加氢脱氧生成喷气燃料：综述

IF 3.1 4区工程技术

Frontiers in Energy Pub Date : 2024-04-01 DOI: 10.1007/s11708-024-0943-7

Zhongyang Luo, Wanchen Zhu, Feiting Miao, Jinsong Zhou

{"title":"Catalytic hydrodeoxygenation of pyrolysis bio-oil to jet fuel: A review","authors":"Zhongyang Luo, Wanchen Zhu, Feiting Miao, Jinsong Zhou","doi":"10.1007/s11708-024-0943-7","DOIUrl":"10.1007/s11708-024-0943-7","url":null,"abstract":"<div>Bio-oil from biomass pyrolysis cannot directly substitute traditional fuel due to compositional deficiencies. Catalytic hydrodeoxygenation (HDO) is the critical and efficient step to upgrade crude bio-oil to high-quality bio-jet fuel by lowering the oxygen content and increasing the heating value. However, the hydrocracking reaction tends to reduce the liquid yield and increase the gas yield, causing carbon loss and producing hydrocarbons with a short carbon-chain. To obtain high-yield bio-jet fuel, the elucidation of the conversion process of biomass catalytic HDO is important in providing guidance for metal catalyst design and optimization of reaction conditions. Considering the complexity of crude bio-oil, this review aimed to investigate the catalytic HDO pathways with model compounds that present typical bio-oil components. First, it provided a comprehensive summary of the impact of physical and electronic structures of both noble and non-noble metals that include monometallic and bimetallic supported catalysts on regulating the conversion pathways and resulting product selectivity. The subsequent first principle calculations further corroborated reaction pathways of model compounds in atom-level on different catalyst surfaces with the experiments above and illustrated the favored C–O/C=O scission orders thermodynamically and kinetically. Then, it discussed hydrogenation effects of different H-donors (such as hydrogen and methane) and catalysts deactivation for economical and industrial consideration. Based on the descriptions above and recent researches, it also elaborated on catalytic HDO of biomass and bio-oil with multi-functional catalysts. Finally, it presented the challenges and future prospective of biomass catalytic HDO.</div>","PeriodicalId":570,"journal":{"name":"Frontiers in Energy","volume":"18 5","pages":"550 - 582"},"PeriodicalIF":3.1,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140936183","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

Syngas production by photoreforming of formic acid with 2D VxW1−xN1.5 solid solution as an efficient cocatalyst 以二维 VxW1-xN1.5 固溶体为高效协同催化剂，通过甲酸光转化生产合成气

IF 3.1 4区工程技术

Frontiers in Energy Pub Date : 2024-03-30 DOI: 10.1007/s11708-024-0940-x

Xiaoyuan Ye, Yuchen Dong, Ziying Zhang, Wengao Zeng, Bin Zhu, Tuo Zhang, Ze Gao, Anna Dai, Xiangjiu Guan

{"title":"Syngas production by photoreforming of formic acid with 2D VxW1−xN1.5 solid solution as an efficient cocatalyst","authors":"Xiaoyuan Ye, Yuchen Dong, Ziying Zhang, Wengao Zeng, Bin Zhu, Tuo Zhang, Ze Gao, Anna Dai, Xiangjiu Guan","doi":"10.1007/s11708-024-0940-x","DOIUrl":"10.1007/s11708-024-0940-x","url":null,"abstract":"<div>Formic acid (FA) is a potential biomass resource of syngas with contents of carbon monoxide (CO, 60 wt.%) and hydrogen (H2, 4.4 wt.%). Among the technologies for FA conversion, the photoreforming of FA has received widespread attention due to its use of green solar energy conversion technology and mild reaction conditions. Herein, a V–W bimetallic solid solution, VxW1−xN1.5 with efficient co-catalytic properties was first and facilely synthesized. When CdS was used as a photocatalyst, the activity performance of the V0.1W0.9N1.5 system was over 60% higher than that of the W2N3 system. The computational simulations and experiments showed the V0.1W0.9N1.5 had great metallic features and large work functions, contributing a faster photo-generated carrier transfer and less recombination, finally facilitating a great performance in cocatalyst for syngas production in photoreforming FA. This work provides an approach to synthesizing novel transition metal nitrides for photocatalysis.</div>","PeriodicalId":570,"journal":{"name":"Frontiers in Energy","volume":"18 5","pages":"640 - 649"},"PeriodicalIF":3.1,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140581119","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