Journal of Power Sources Advances最新文献_第10页

Aqueous multi-electron electrolyte for hybrid flow batteries with high energy and power densities 用于高能量和功率密度混合液流电池的多电子水溶液

IF 4.5

Journal of Power Sources Advances Pub Date : 2020-08-01 DOI: 10.1016/j.powera.2020.100018

Qiuhong Wang, Walid A. Daoud

{"title":"Aqueous multi-electron electrolyte for hybrid flow batteries with high energy and power densities","authors":"Qiuhong Wang, Walid A. Daoud","doi":"10.1016/j.powera.2020.100018","DOIUrl":"10.1016/j.powera.2020.100018","url":null,"abstract":"<div><p>Flow battery is a promising energy storage technology for facilitating utilization of renewable resources. While new types of flow batteries have been explored toward high energy density, hampering the power density due to high electrolyte viscosity and sluggish reaction kinetics. Discovery of an aqueous electrolyte with multi-electron transfer reaction is thus favorable for both high energy and power densities due to its multiple charge stored at the same concentration. Both criteria are crucial to improve the flexibility of cell design and widen the application potential. Herein, bismuth is pioneered as negative electrolyte (negolyte) for hybrid flow battery owing to its three-electron reaction and the significantly increased solubility in methanesulfonic acid. In conjunction with cerium electrolyte, a volumetric energy density of 90 Wh L<sup>−1</sup> is achieved and simultaneously a high power density of 295 mW cm<sup>−2</sup> at 90% state-of-charge is demonstrated using low-cost carbon electrode. Furthermore, a high volumetric capacity of 120 Ah L<sup>−1</sup> is reached via adopting graphite felt, which is 100% of the theoretical specific capacity of 1.5 M bismuth negolyte.</p></div>","PeriodicalId":34318,"journal":{"name":"Journal of Power Sources Advances","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.powera.2020.100018","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"108500684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

In situ X-ray computational tomography measurement of single particle behavior of sulfide solid electrolyte under high-pressure compression 高压压缩下硫化物固体电解质单粒子行为的原位x射线计算机断层扫描测量

IF 4.5

Journal of Power Sources Advances Pub Date : 2020-08-01 DOI: 10.1016/j.powera.2020.100019

M. Kodama, A. Ohashi, S. Hirai

引用次数: 8

Cathode starvation as an accelerated conditioning procedure for perfluorosulfonic acid ionomer fuel cells 阴极饥饿作为全氟磺酸离聚体燃料电池的加速调理程序

IF 4.5

Journal of Power Sources Advances Pub Date : 2020-06-01 DOI: 10.1016/j.powera.2020.100012

Emmanuel Balogun , Alejandro Oyarce Barnett , Steven Holdcroft

{"title":"Cathode starvation as an accelerated conditioning procedure for perfluorosulfonic acid ionomer fuel cells","authors":"Emmanuel Balogun , Alejandro Oyarce Barnett , Steven Holdcroft","doi":"10.1016/j.powera.2020.100012","DOIUrl":"10.1016/j.powera.2020.100012","url":null,"abstract":"<div><p>Freshly assembled proton exchange fuel cells (PEMFC) require conditioning to reach maximum power density. This process may last up to tens of hours and adds to the cost of commercial fuel cell technology. We present an accelerated conditioning procedure involving starving the cathode of oxidant. In single cells, this procedure conditions a membrane electrode assembly (MEA) within 40 min, without compromising durability. The performance and durability of MEAs conditioned using this technique are compared with US Department of Energy (DOE) and European Union (EU) harmonized protocols, and to an amperometric conditioning protocol. The time to reach peak power density using cathode starvation conditioning is <10% of the time required for DOE, EU, and amperometric protocols. Conditioned MEAs were subjected to accelerated degradation by cycling the cell voltage between 0.6 V and open-circuit voltage under low relative humidity. Degradation was found to be caused by loss of electrochemical surface area of the cathode, which in turn increases the charge transfer resistance of the MEA. MEAs conditioned using cathode starvation experienced only a 15% loss in performance; in contrast to 19, 17 and 17% losses in performance caused by the DOE, EU, and amperometric protocols, respectively.</p></div>","PeriodicalId":34318,"journal":{"name":"Journal of Power Sources Advances","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.powera.2020.100012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41564398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 20

Atomic-scale studies of garnet-type Mg3Fe2Si3O12: Defect chemistry, diffusion and dopant properties 石榴石型Mg3Fe2Si3O12的原子尺度研究:缺陷化学、扩散和掺杂性能

IF 4.5

Journal of Power Sources Advances Pub Date : 2020-06-01 DOI: 10.1016/j.powera.2020.100016

Navaratnarajah Kuganathan , Alexander Chroneos

{"title":"Atomic-scale studies of garnet-type Mg3Fe2Si3O12: Defect chemistry, diffusion and dopant properties","authors":"Navaratnarajah Kuganathan , Alexander Chroneos","doi":"10.1016/j.powera.2020.100016","DOIUrl":"10.1016/j.powera.2020.100016","url":null,"abstract":"<div><p>Materials with low cost, environmentally benign, high structural stability and high Mg content are of considerable interest for the construction of rechargeable Mg-ion batteries. In the present study, atomistic simulations are used to provide insights into defect and diffusion properties of garnet type Mg<sub>3</sub>Fe<sub>2</sub>Si<sub>3</sub>O<sub>12</sub>. Calculations reveal that the Mg–Fe anti-site defect cluster (0.44 eV/defect) is the lowest energy intrinsic defect process. Three dimensional Mg-ion migration pathway with the activation energy of 2.19 eV suggests that Mg-ion diffusion in this material is slow. Favourable isovalent dopants are found to be Mn<sup>2+</sup>, Ga<sup>3+</sup> and Ge<sup>4+</sup> on the Mg, Fe and Si sites respectively. While the formation of Mg interstitials required for the capacity is facilitated by Al doping on the Si site, Mg vacancies needed for the vacancy assisted Mg-ion diffusion are enhanced by Ge doping on the Fe site. The electronic structures of favourable dopants are calculated and discussed using density functional theory.</p></div>","PeriodicalId":34318,"journal":{"name":"Journal of Power Sources Advances","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.powera.2020.100016","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"96830021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Highly stable metal halide perovskite microcube anodes for lithium-air batteries 用于锂空气电池的高度稳定的金属卤化物钙钛矿微立方阳极

IF 4.5

Journal of Power Sources Advances Pub Date : 2020-06-01 DOI: 10.1016/j.powera.2020.100015

Athanasia Kostopoulou , Dimitra Vernardou , Dimitra Makri , Konstantinos Brintakis , Kyriaki Savva , Emmanuel Stratakis

{"title":"Highly stable metal halide perovskite microcube anodes for lithium-air batteries","authors":"Athanasia Kostopoulou , Dimitra Vernardou , Dimitra Makri , Konstantinos Brintakis , Kyriaki Savva , Emmanuel Stratakis","doi":"10.1016/j.powera.2020.100015","DOIUrl":"10.1016/j.powera.2020.100015","url":null,"abstract":"<div><p>Metal halide perovskites have been recently proposed as hopeful materials for energy storage applications. Besides, the quite important electrochemical characteristics of these materials, all the perovskite-based anodes are synthesized at high temperatures (90–150 °C) and with reaction durations of the order of tens of hours. In this work, it has been particularly shown that the direct growth of all-inorganic, metal halide microcrystals free of ligands, provides high-performance and stable electrodes for Li-air batteries. We describe a very simple and rapid method to synthesize well-crystalline and ultra-stable, at both ambient and aqueous conditions, CsPbBr<sub>3</sub> microcubes, exhibiting prominent electrochemical performance. In particular, it is shown that during the successive scans in which the Li-ions intercalate and deintercalate, the microcubes-based anodes showed a high specific capacity of 549 mAh·g<sup>−1</sup> and operation durability up to 1500 cycles. The large interfacial area between the perovskite electroactive material and the electrolyte along with the increase of the active sites on the exposed microcubes facets favor the Li-ions intercalation. It is concluded that the anodes presented here demonstrate the best electrochemical features among the nano- and microparticulate lead halide perovskite anodes used for Li-air batteries, to date.</p></div>","PeriodicalId":34318,"journal":{"name":"Journal of Power Sources Advances","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.powera.2020.100015","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54919075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

Evaluation of counter and reference electrodes for the investigation of Ca battery materials 研究钙电池材料的反电极和参比电极的评价

IF 4.5

Journal of Power Sources Advances Pub Date : 2020-04-01 DOI: 10.1016/j.powera.2020.100008

Xu Liu , Giuseppe Antonio Elia , Stefano Passerini

引用次数: 10

Ni/NiFe2 dual-layer coating for SOFC steel interconnects application SOFC钢互连用Ni/NiFe2双层涂层

IF 4.5

Journal of Power Sources Advances Pub Date : 2020-04-01 DOI: 10.1016/j.powera.2020.100011

Qingqing Zhao, Shujiang Geng, Xingye Gao, Gang Chen, Fuhui Wang

引用次数: 11

A rapid mechanical durability test for reinforced fuel cell membranes 增强燃料电池膜的快速机械耐久性试验

IF 4.5

Journal of Power Sources Advances Pub Date : 2020-04-01 DOI: 10.1016/j.powera.2020.100010

Alireza Sadeghi Alavijeh , Sandeep Bhattacharya , Owen Thomas , Carmen Chuy , Erik Kjeang

引用次数: 3

Efficiency analysis of 50 kWe SOFC systems fueled with biogas from waste water 以废水沼气为燃料的50kwe SOFC系统效率分析

IF 4.5

Journal of Power Sources Advances Pub Date : 2020-04-01 DOI: 10.1016/j.powera.2020.100009

Hendrik Langnickel , Markus Rautanen , Marta Gandiglio , Massimo Santarelli , Tuomas Hakala , Marco Acri , Jari Kiviaho

{"title":"Efficiency analysis of 50 kWe SOFC systems fueled with biogas from waste water","authors":"Hendrik Langnickel , Markus Rautanen , Marta Gandiglio , Massimo Santarelli , Tuomas Hakala , Marco Acri , Jari Kiviaho","doi":"10.1016/j.powera.2020.100009","DOIUrl":"10.1016/j.powera.2020.100009","url":null,"abstract":"<div><p>Solid oxide fuel cell systems (SOFCs) are able to convert biogas from e.g. waste water plants highly efficiently into electricity and heat. An efficiency study of industrial sized solid oxide fuel cell systems installed at a waste water treatment plant is presented. The site consist of a biogas cleaning unit, two Convion C50 SOFC systems and a heat recovery section. The electric and total efficiencies of the systems are analyzed as a function of the electric net power output. The two systems achieved consistently high electric (50–55%) and total (80–90%) efficiencies in an electric net power output range between 25 kW and 55 kW. The study also shows that the high system efficiencies are independent of the CH<sub>4</sub> content in the biogas. The results indicate that fuel cell systems are able to perform power modulation according to the power demand, while achieving constant high efficiencies. This is a clear benefit in comparison to micro turbines and combustion engines which are normally used for converting biogas into electricity and heat.</p></div>","PeriodicalId":34318,"journal":{"name":"Journal of Power Sources Advances","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.powera.2020.100009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"104216599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

Numerical simulation of mass transfer enhancement in liquid metal batteries by means of electro-vortex flow 电涡流增强液态金属电池传质的数值模拟

IF 4.5

Journal of Power Sources Advances Pub Date : 2020-02-01 DOI: 10.1016/j.powera.2020.100004

Norbert Weber , Michael Nimtz , Paolo Personnettaz , Tom Weier , Donald Sadoway

引用次数: 21