Fuel Cells最新文献_第7页

A parametric numerical study on the performance of polymer electrolyte membrane fuel cell with intermediate-blocked interdigitated flow field designs 中间阻塞叉指型流场设计下聚合物电解质膜燃料电池性能的参数数值研究

IF 2.8 4区工程技术

Fuel Cells Pub Date : 2023-07-31 DOI: 10.1002/fuce.202200188

Fatemeh Bagherighajari, Abbas Moradi Bilondi, Mohammadmahdi Abdollahzadehsangroudi, Ali Hamrang, José Carlos Páscoa

{"title":"A parametric numerical study on the performance of polymer electrolyte membrane fuel cell with intermediate-blocked interdigitated flow field designs","authors":"Fatemeh Bagherighajari, Abbas Moradi Bilondi, Mohammadmahdi Abdollahzadehsangroudi, Ali Hamrang, José Carlos Páscoa","doi":"10.1002/fuce.202200188","DOIUrl":"10.1002/fuce.202200188","url":null,"abstract":"Flow field design is crucial for achieving higher performance in polymer electrolyte membrane fuel cells (PEMFCs). This study uses a two-phase, multi-component, and three-dimensional model to simulate the performance of PEMFCs that use interdigitated flow field design with intermediate blocks on the cathode side. A detailed parametric study is presented to investigate the effects of various geometric and operational parameters. Of the parameters studied, inlet mass flow rate, relative humidity, and rib width had the greatest impact on cell performance. The results show that increasing the cathode stoichiometric ratio resulted in higher fuel cell performance for blocked interdigitated designs compared to parallel designs. In addition, using cathode channels with higher height values resulted in lower PEMFC performance for all flow fields. Higher values of rib/channel width ratio resulted in lower cell performance due to liquid water accumulation in the rib regions. However, at higher rib/channel width ratios, the positive effect of using interdigitated flow designs was more pronounced. Moreover, at a low relative humidity of RH = 25%, a 10.4% higher performance was obtained for the interdigitated type II compared to cases with RH = 100%, due to more effective over-rib convection and higher water removal.","PeriodicalId":12566,"journal":{"name":"Fuel Cells","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44651950","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

Electrochemical and microstructural characterization of the high‐entropy perovskite La0.2Pr0.2Nd0.2Sm0.2Sr0.2CoO3‐δ for solid oxide cell air electrodes 固体氧化物电池空气电极用高熵钙钛矿La0.2Pr0.2Nd0.2Sm0.2Sr0.2CoO3‐δ的电化学和微观结构表征

IF 2.8 4区工程技术

Fuel Cells Pub Date : 2023-07-27 DOI: 10.1002/fuce.202300036

Patrick Pretschuh, A. Egger, R. Brunner, E. Bucher

引用次数: 0

Cover Fuel Cells 3/2023 覆盖燃料电池3/2023

IF 2.8 4区工程技术

Fuel Cells Pub Date : 2023-06-29 DOI: 10.1002/fuce.2023701031

引用次数: 0

Solid oxide cell electrolytes deposited by atmospheric suspension plasma spraying at high velocity and high temperature 采用大气悬浮等离子体高速高温喷涂沉积固体氧化物电池电解质

IF 2.8 4区工程技术

Fuel Cells Pub Date : 2023-06-25 DOI: 10.1002/fuce.202100048

Joel Kuhn, Olivera Kesler

{"title":"Solid oxide cell electrolytes deposited by atmospheric suspension plasma spraying at high velocity and high temperature","authors":"Joel Kuhn, Olivera Kesler","doi":"10.1002/fuce.202100048","DOIUrl":"10.1002/fuce.202100048","url":null,"abstract":"Metal-supported solid oxide cells with Yttria-stabilized zirconia (YSZ) electrolytes fabricated by atmospheric plasma spraying are routinely found to have open-circuit voltages (OCVs) below the Nernst potential due to gas crossover and combustion resulting from electrolyte defects. To improve splat bonding and reduce coating defects, YSZ electrolytes were fabricated here at >800°C substrate temperatures and torch-substrate relative velocities of 4 and 12 m/s by atmospheric suspension plasma spraying. Electrolyte microstructures appeared dense, with porosities estimated to be approximately 2.2–3.5 vol%. Minimal segmentation cracking was observed on samples fabricated at 12 m/s. The full cells that were electrochemically tested had permeabilities in the range of 4–6 × 10−19 m2, and the maximum recorded OCV was ∼26 mV below the Nernst potential for 750°C. Potential performance gains from YSZ deposition at substrate temperatures >800°C may have been masked by poor substrate-fuel electrode contact. Using electrochemical impedance spectroscopy, it was found that the ohmic and polarization resistances decreased and increased, respectively, over time. The calculated distribution of relaxation times of the tested cells, together with observations from the literature, were employed to identify possible cell degradation mechanisms observed during short-term durability testing.","PeriodicalId":12566,"journal":{"name":"Fuel Cells","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47319938","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

Temperature-controlled microextrusion printing for mesoscale interfacial designing in solid oxide fuel cells 用于固体氧化物燃料电池中尺度界面设计的温度控制微挤出印刷

IF 2.8 4区工程技术

Fuel Cells Pub Date : 2023-06-25 DOI: 10.1002/fuce.202200170

Cheng Ding, Haewon Seo, Masashi Kishimoto, Hiroshi Iwai

引用次数: 1

Numerical investigation of enhanced mass transfer flow field on performance improvement of high-temperature proton exchange membrane fuel cell 强化传质流场对高温质子交换膜燃料电池性能改善的数值研究

IF 2.8 4区工程技术

Fuel Cells Pub Date : 2023-05-08 DOI: 10.1002/fuce.202200131

Lang Cai, Jun Zhang, Caizhi Zhang, Jiaming Zhou, Tao Zeng, Fengyan Yi, Donghai Hu, Xiaosong Zhang

{"title":"Numerical investigation of enhanced mass transfer flow field on performance improvement of high-temperature proton exchange membrane fuel cell","authors":"Lang Cai, Jun Zhang, Caizhi Zhang, Jiaming Zhou, Tao Zeng, Fengyan Yi, Donghai Hu, Xiaosong Zhang","doi":"10.1002/fuce.202200131","DOIUrl":"10.1002/fuce.202200131","url":null,"abstract":"The enhanced mass transfer flow fields have been proven to be an effective measure to improve the cell performance of low-temperature proton exchange membrane fuel cells, yet little research has been done for high-temperature proton exchange membrane fuel cells (HT-PEMFC). In this work, three types of cathode-enhanced mass transfer flow fields (tapered, staggered-blocked, and blocked) are designed. The effects of various flow fields on the reactant delivery, current density distribution uniformity, and net power output of HT-PEMFC are quantitatively investigated and compared. It is found that the three enhanced mass transfer flow fields can effectively increase the performance of HT-PEMFC by transforming the traditional diffusion into a combination of diffusion and forced convection. In the sight of the superior performance and lower flow resistance, the tapered flow field is thought to be the optimal candidate for HT-PEMFC among the four flow fields, with a 12.21% net power increment and 5.32% current density distribution uniformity improvement at 1.4 A/cm2 compared to the conventional flow field. These results support further performance enhancements and applications of HT-PEMFC.","PeriodicalId":12566,"journal":{"name":"Fuel Cells","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44848447","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

A numerical study on the effects of using combined flow fields and obstacles on the performance of proton exchange membrane fuel cells 组合流场和障碍物对质子交换膜燃料电池性能影响的数值研究

IF 2.8 4区工程技术

Fuel Cells Pub Date : 2023-05-03 DOI: 10.1002/fuce.202200207

Yuan Chen, Xiaori Liu, Zhonghao Rao

{"title":"A numerical study on the effects of using combined flow fields and obstacles on the performance of proton exchange membrane fuel cells","authors":"Yuan Chen, Xiaori Liu, Zhonghao Rao","doi":"10.1002/fuce.202200207","DOIUrl":"10.1002/fuce.202200207","url":null,"abstract":"The flow field structure has an important influence on the comprehensive performance of the proton exchange membrane fuel cell (PEMFC). This research investigates the effects of combined flow fields on the distribution of species concentration, the pressure drop, and the overall performance of PEMFC based on the polarization curve and power consumption ratio (PCR). Obstacles are arranged in different areas to study the mass transfer of the gas inside the combined flow field. The results show that the combined serpentine flow field improves the concentration distribution of species and the performance of the cell is enhanced with the increase of the proportion of the single-channel serpentine structure in the combined flow field, but the PCR is decreased. The energy efficiency conversion in the low voltage region is better when the obstacles are arranged in the entire flow field. Moreover, the vortex effect generated by the obstacles enhances the convection ability under the rib parallel to the inlet direction, while the transverse vortex and secondary flow perpendicular to the inlet direction are weakened by the flow field structure so that the mass transfer of gas is enhanced.","PeriodicalId":12566,"journal":{"name":"Fuel Cells","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47835485","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: 2

Cover Fuel Cells 2/2023 覆盖燃料电池2/2023

IF 2.8 4区工程技术

Fuel Cells Pub Date : 2023-04-17 DOI: 10.1002/fuce.2023701021

引用次数: 0

Study on the nonuniform mechanical degradation of membranes considering temperature and relative humidity distribution in proton exchange membrane fuel cells 考虑温度和相对湿度分布的质子交换膜燃料电池膜非均匀力学降解研究

IF 2.8 4区工程技术

Fuel Cells Pub Date : 2023-03-17 DOI: 10.1002/fuce.202200214

Wenqing Liu, Diankai Qiu, Linfa Peng, Xinmin Lai

{"title":"Study on the nonuniform mechanical degradation of membranes considering temperature and relative humidity distribution in proton exchange membrane fuel cells","authors":"Wenqing Liu, Diankai Qiu, Linfa Peng, Xinmin Lai","doi":"10.1002/fuce.202200214","DOIUrl":"10.1002/fuce.202200214","url":null,"abstract":"The membrane usually breaks down at a specific local position due to the mechanical degradation caused by nonuniform hygrothermal conditions in proton exchange membrane fuel cells. Many studies have been carried out analyzing the stress and strain on membrane along thickness direction, but few of them considered the stress along the surface. By imposing uneven temperature and water profiles according to experiments and simulation, this study systematically investigated effects of varying temperatures, relative humidity, and gas flow directions on the membrane stress/strain in a comprehensive 3D model. The results proved that nonuniform temperature and water content affect the response of the membrane a lot. Although the membrane at the inlet of the flow field suffers higher stress, the membrane at the outlet is easier to fail because higher humidity leads to lower yield stress. For the operating condition, the stress range of cells under the counter-flow reactant gas is 0.2 MPa less than those under co-flow direction. And increasing humidity to near-saturated condition would reduce the stress range from 1.2 to 0.49 MPa. The study contributes to achieving better fatigue resistance for membranes in terms of controlling anisotropic heat and relative humidity for fuel cells.","PeriodicalId":12566,"journal":{"name":"Fuel Cells","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43857941","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: 1

Simulation-based multiobjective management of transient heating process of solid oxide fuel cell 基于仿真的固体氧化物燃料电池瞬态加热过程多目标管理

IF 2.8 4区工程技术

Fuel Cells Pub Date : 2023-03-16 DOI: 10.1002/fuce.202200113

Masoud Hami, Javad Mahmoudimehr

{"title":"Simulation-based multiobjective management of transient heating process of solid oxide fuel cell","authors":"Masoud Hami, Javad Mahmoudimehr","doi":"10.1002/fuce.202200113","DOIUrl":"10.1002/fuce.202200113","url":null,"abstract":"A solid oxide fuel cell (SOFC) needs to be heated to an appropriate temperature (around 600°C) before it is switched to start-up mode. A fast heat-up process, which is naturally of interest, can cause high temperature gradients inside the SOFC and the subsequent problems of cracking and delamination. Therefore, in order for the heat-up process to be efficiently managed, the opposing objectives (heat-up duration and temperature gradient) have to be considered simultaneously. The present study investigates the influences of the type of temperature rise function and the average rate of temperature rise (ARTR) on each objective (heat-up duration and temperature gradient). Beside the simple linear temperature rise function of heating fluid considered in previous studies, some innovative nonlinear functions are also introduced and examined in the present study. The results indicate that the rotated-exponential temperature function with an ARTR of 5 K s−1 and the linear temperature function with an ARTR of 0.1 K s−1 are the best choices in terms of heat-up duration and temperature gradient, respectively. This study also attempts to make a compromise between the two objectives and introduces the rotated-quadratic temperature function with an ARTR of 0.4 K s−1 as a representative trade-off solution.","PeriodicalId":12566,"journal":{"name":"Fuel Cells","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47780297","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: 1