MatSciRN: Materials for Energy Storage & Conversion (Topic)最新文献

An Analysis of Solar P.V. Access To Alleviate Energy Poverty in Benin 太阳能光伏发电在贝宁缓解能源贫困中的应用分析

MatSciRN: Materials for Energy Storage & Conversion (Topic) Pub Date : 2020-11-23 DOI: 10.2139/ssrn.3735400

N. Jacobs, M. Adonis

引用次数: 1

A Self-Standing and Binder-Free CaV 6O 16·3H 2O Paper Electrodes for Lithium Ion Batteries 锂离子电池用独立无粘结剂CaV 6016·3h2o纸电极

MatSciRN: Materials for Energy Storage & Conversion (Topic) Pub Date : 2020-09-25 DOI: 10.2139/ssrn.3680270

Shaoyan Zhang, Liqiang Lv, J. Pei, Min Lu, Jianing Yang, Sixuan Kong

引用次数: 0

A Numerical Study of Proton Exchange Membrane Fuel Cell Performances Affected by Various Porosities of Gas Difussion Layer Materials 气体扩散层材料孔隙率对质子交换膜燃料电池性能影响的数值研究

MatSciRN: Materials for Energy Storage & Conversion (Topic) Pub Date : 2020-02-24 DOI: 10.15587/1729-4061.2020.181442

W. Wijayanti, R. Kusumastuti, Sasmoko, M. N. Sasongko

{"title":"A Numerical Study of Proton Exchange Membrane Fuel Cell Performances Affected by Various Porosities of Gas Difussion Layer Materials","authors":"W. Wijayanti, R. Kusumastuti, Sasmoko, M. N. Sasongko","doi":"10.15587/1729-4061.2020.181442","DOIUrl":"https://doi.org/10.15587/1729-4061.2020.181442","url":null,"abstract":"One of the factors that can increase the surface transfer property for gas diffusivity apart from the membrane material in PEMFC is the porosity of the gas diffusion layer material affecting species mass distribution at the electrodes. The present study simulates the performance of PEMFC by investigating the effect of GDL porosities in some commercial ELAT-TEK-1200W (e=0.31), and SIGRACET 25BA (e=0.63), also an organic material coconut coir (e=0.88) numerically. It was carried out using COMSOL Multiphysics 5.3a in the form of species mass concentrations plotted in the surface contour and cut points at the electrodes in the elapsed time transiently. Afterward, the results were used to determine the PEMFC performance by calculating some losses; activation, ohmic, and mass concentration polarization. The results showed that the PEMFC performance was only influenced by the mass polarization. It means that the power density is strongly influenced by the concentration of species in the anode and the cathode. The mass concentration is strongly influenced by the distribution of species; H2, O2, and H2O formed during the reaction. The highest H2 concentration at the anode occurs in the GDL using ELAT-TEK-1200W having the smallest porosity producing the highest power density compared to other GDL materials. It makes an easier diffusion process between H2 and O2 species to work properly. However, coconut coir as an organic material can be a promising GDL in the future because of its performance compared to the others.","PeriodicalId":290685,"journal":{"name":"MatSciRN: Materials for Energy Storage & Conversion (Topic)","volume":"07 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129430116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Direct Growth of Flower-Shaped Cos1.097 Nanoflakes on Flexible Carbon Cloth: An Ultrastable Cycle Durability Anode for Reversible Sodium Storage 花形Cos1.097纳米片在柔性碳布上的直接生长:一种用于可逆钠储存的超稳定循环耐久性阳极

MatSciRN: Materials for Energy Storage & Conversion (Topic) Pub Date : 2020-02-19 DOI: 10.2139/ssrn.3538762

Wenxi Zhao, Xiaoqing Ma

引用次数: 8

Modelling of a Solid Oxide Fuel Cell Microgrid System for a Megawatt Load 兆瓦负载固体氧化物燃料电池微电网系统建模

MatSciRN: Materials for Energy Storage & Conversion (Topic) Pub Date : 2019-11-25 DOI: 10.2139/ssrn.3637459

Khld B Hamad, M. Kahn

{"title":"Modelling of a Solid Oxide Fuel Cell Microgrid System for a Megawatt Load","authors":"Khld B Hamad, M. Kahn","doi":"10.2139/ssrn.3637459","DOIUrl":"https://doi.org/10.2139/ssrn.3637459","url":null,"abstract":"Fuel cell systems are expected to play a key role for power generation in various applications ranging from domestic, commercial to industrial. A solid oxide fuel cell is one of the types which is suitable for high-power demand. It can power diverse systems including trains, ships, vehicles as well as supplying industrial and residential loads. In this study, a microgrid using a 1.4 MW solid oxide fuel cell is considered operating in grid connection mode under 600 volts. A grid connected inverter is modelled and controlled as a closed loop control system to supply a 1.2 local load while feeding any excess into the grid. The inverter control scheme comprises voltage and current regulators to provide a good power factor and satisfy synchronisation requirements with the utility grid in synchronous frame. The frequency and phase of the inverter are synchronised with those of the grid through a phaselocked-loop. An LCL filter serving as an interface between the inverter and the grid is used to minimise harmonics produced by the grid-connected inverter. Matlab/Simulink environment is used for the modelling and simulation. The results obtained show good performance of the proposed microgrid as well as the inverter design and control approach with a low total harmonic distortion of about 0.5%.","PeriodicalId":290685,"journal":{"name":"MatSciRN: Materials for Energy Storage & Conversion (Topic)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132250894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Electricity Market Prices for Day-Ahead Ancillary Services and Energy: Texas 日前辅助服务和能源的电力市场价格:德克萨斯州

MatSciRN: Materials for Energy Storage & Conversion (Topic) Pub Date : 2019-03-26 DOI: 10.21314/JEM.2018.188

J. Zarnikau, C. K. Woo, Shuangshuang Zhu, R. Baldick, C. Tsai, Jingwei Meng

{"title":"Electricity Market Prices for Day-Ahead Ancillary Services and Energy: Texas","authors":"J. Zarnikau, C. K. Woo, Shuangshuang Zhu, R. Baldick, C. Tsai, Jingwei Meng","doi":"10.21314/JEM.2018.188","DOIUrl":"https://doi.org/10.21314/JEM.2018.188","url":null,"abstract":"Applying a regression-based approach to a large sample of hourly observations for the seven-year period of January 1, 2011 to December 30, 2017, we explore determinants of day-ahead market (DAM) prices for ancillary services (ASs) and energy in the Electric Reliability Council of Texas (ERCOT). For each GW increase in responsive reserve (RRS) or nonspinning reserve (NSRS) procurement quantities, we estimate price increases of about US$3.47 per MW per hour and US$5.63 per MW per hour, respectively; while the cost of an additional 1 GW of regulation up (REGUP) and regulation down (REGDN) is a much higher US$17 per MW per hour and US$31 per MW per hour, respectively. A US$1/MWh increase in the DAM energy price tends to increase RRS and REGUP prices by nearly US$1 per MW per hour, about twice the estimated impact for NSRS that is not necessarily online when selected. The participation of interruptible loads to provide RRSs reduces the RRS price, and this effect increased nearly six-fold from the first to the second half of our sample time period. An increase in wind generation tends to decrease AS prices because it reduces the DAM energy price via the merit-order effect. Hence, Texas’s wind generation expansion has not raised ERCOT’s AS prices in our sample period, which is characterized by a stable AS requirement and declining natural gas prices. Going forward, however, Texas could face AS cost escalation due to the high REGUP and REGDN prices, should ERCOT’s requirement and procurement of those services increase due to rising renewable production. ","PeriodicalId":290685,"journal":{"name":"MatSciRN: Materials for Energy Storage & Conversion (Topic)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123976492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Double Half-Heuslers 双Half-Heuslers

MatSciRN: Materials for Energy Storage & Conversion (Topic) Pub Date : 2019-02-22 DOI: 10.2139/ssrn.3339907

Shashwat Anand, Max Wood, Yi Xia, C. Wolverton, G. J. Snyder

引用次数: 83

Technology and Market Perspective for Indoor Photovoltaic Cells 室内光伏电池的技术与市场展望

MatSciRN: Materials for Energy Storage & Conversion (Topic) Pub Date : 2019-01-01 DOI: 10.2139/ssrn.3458863

I. Mathews, S. N. Kantareddy, T. Buonassisi, I. M. Peters

引用次数: 253

Thermodynamic Assessment of the Solar-to-Fuel Performance of La 0.6Sr 0.4Mn 1-YCr yO 3-σ Perovskite Solid Solution Series La 0.6Sr 0.4Mn 1-YCr yO 3-σ钙钛矿固溶体系列太阳能-燃料性能的热力学评价

MatSciRN: Materials for Energy Storage & Conversion (Topic) Pub Date : 2018-12-17 DOI: 10.2139/ssrn.3302669

A. H. Bork, E. Povoden-Karadeniz, A. J. Carrillo, J. Rupp

{"title":"Thermodynamic Assessment of the Solar-to-Fuel Performance of La 0.6Sr 0.4Mn 1-YCr yO 3-σ Perovskite Solid Solution Series","authors":"A. H. Bork, E. Povoden-Karadeniz, A. J. Carrillo, J. Rupp","doi":"10.2139/ssrn.3302669","DOIUrl":"https://doi.org/10.2139/ssrn.3302669","url":null,"abstract":"In the search of new materials for the solar-to-fuel technology, we turn to the material class of perovskites that offer wide possibilities in manipulation of its chemistry and catalytic activity. Here, we access the role of Cr in the La0.6Sr0.4Mn1-YCryO3-σ perovskite solid solution hitherto unexplored for two-step solar thermochemical fuel production. A multi-component Calphad defect model for the system La-Sr-Cr-Mn-O is therefore optimized and used for computations of oxygen nonstoichiometries and redox thermodynamics of the La0.6Sr0.4Mn1-YCryO3-σ solution series in the temperature range of 1073 to 1873 K as a potential operation window for solar-to-fuel conversion. Modeling results reveal two advantages of substituting manganese by chromium. Firstly, it is possible to reduce the heat capacity with up to 10%, to a value of 132 J mol-1 K-1. Secondly, the thermodynamic driving force for solar-to-fuel conversion increases and the Cr-doped materials provide higher yield and efficiency at isothermal operation. The proposed model allows for continuous simulative scanning of redox thermodynamics from zero Cr-doping to a fully substituted chromite perovskite. For isothermal water splitting, the composition La0.6Sr0.4Mn1-YCryO3-σ displays the highest fuel yield and efficiency of 2.7% due to a high thermodynamic driving force at elevated temperature for this composition. These predictive insights give prospects for engineering the thermodynamics of the oxygen release reaction in perovskites towards higher fuel production and efficiency in solar-to-fuel reactors with isothermal operation.","PeriodicalId":290685,"journal":{"name":"MatSciRN: Materials for Energy Storage & Conversion (Topic)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131213931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Results of the Survey Conducted During 7th Workshop on Metallization and Interconnection for Crystalline Silicon Solar Cells 第七届晶体硅太阳能电池金属化与互连研讨会调研结果

MatSciRN: Materials for Energy Storage & Conversion (Topic) Pub Date : 2018-04-15 DOI: 10.2139/ssrn.3152250

G. Schubert, G. Beaucarne, L. Tous, J. Hoornstra

引用次数: 4