Journal of Power Sources Advances最新文献_第9页

Multiple cycle chromium poisoning and in-situ electrochemical cleaning of LSM-based solid oxide fuel cell cathodes lsm基固体氧化物燃料电池阴极的多循环铬中毒及原位电化学清洗

IF 4.5

Journal of Power Sources Advances Pub Date : 2020-12-01 DOI: 10.1016/j.powera.2020.100037

Zhikuan Zhu , Michelle Sugimoto , Uday Pal , Srikanth Gopalan , Soumendra Basu

{"title":"Multiple cycle chromium poisoning and in-situ electrochemical cleaning of LSM-based solid oxide fuel cell cathodes","authors":"Zhikuan Zhu , Michelle Sugimoto , Uday Pal , Srikanth Gopalan , Soumendra Basu","doi":"10.1016/j.powera.2020.100037","DOIUrl":"https://doi.org/10.1016/j.powera.2020.100037","url":null,"abstract":"<div><p>Electrochemical cleaning, a recently proposed mitigation strategy for chromium poisoning in solid oxide fuel cell (SOFC) cathodes, involves rapid <em>in-situ</em> removal of Cr<sub>2</sub>O<sub>3</sub> deposits from LSM-YSZ cathodes accompanied by a recovery of a large fraction of the cell performance originally lost due to Cr poisoning. By operating the cell briefly as a solid oxide electrolyzer cell (SOEC), the cleaning method effectively reverses the Cr deposition reactions, reforming Cr-containing vapor species, thereby freeing up electrochemically active sites and restoring cell performance. In practice, this method can be periodically applied to the system after a specified amount of degradation due to chromium poisoning has occurred. The current study investigates the efficacy of this method by cycling a single cell through a stage of accelerated poisoning followed by electrochemical cleaning for a total of three times. Current-voltage measurements demonstrate repeated loss in performance due to Cr poisoning and recovery in performance due to electrochemical cleaning, reinforcing the utility of this cleaning method over the lifetime of the cell operation.</p></div>","PeriodicalId":34318,"journal":{"name":"Journal of Power Sources Advances","volume":"6 ","pages":"Article 100037"},"PeriodicalIF":4.5,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.powera.2020.100037","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91778699","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: 5

Electro-osmotic flow and the limiting current in alkaline water electrolysis 电渗透流与碱水电解的极限电流

IF 4.5

Journal of Power Sources Advances Pub Date : 2020-12-01 DOI: 10.1016/j.powera.2020.100034

J.W. Haverkort, H. Rajaei

引用次数: 14

Mechanochemically synthesized Cu3P/C composites as a conversion electrode for Li-ion and Na-ion batteries in different electrolytes 机械化学合成Cu3P/C复合材料，作为锂离子和钠离子电池在不同电解质下的转换电极

IF 4.5

Journal of Power Sources Advances Pub Date : 2020-12-01 DOI: 10.1016/j.powera.2020.100031

Wolfgang Brehm , Aggunda L. Santhosha , Zhenggang Zhang , Christof Neumann , Andrey Turchanin , Martin Seyring , Markus Rettenmayr , Johannes R. Buchheim , Philipp Adelhelm

{"title":"Mechanochemically synthesized Cu3P/C composites as a conversion electrode for Li-ion and Na-ion batteries in different electrolytes","authors":"Wolfgang Brehm , Aggunda L. Santhosha , Zhenggang Zhang , Christof Neumann , Andrey Turchanin , Martin Seyring , Markus Rettenmayr , Johannes R. Buchheim , Philipp Adelhelm","doi":"10.1016/j.powera.2020.100031","DOIUrl":"10.1016/j.powera.2020.100031","url":null,"abstract":"<div><p>Copper phosphide (Cu<sub>3</sub>P) is a potentially high volumetric capacity conversion electrode for the use in Li-ion as well as in Na-ion batteries. Here, we study the lithium and sodium storage properties of Cu<sub>3</sub>P/Carbon (Cu<sub>3</sub>P/C) composites containing 70 wt% Cu<sub>3</sub>P and 30 wt% carbon black. Cu<sub>3</sub>P is prepared by reactive ball milling from the elements while in a second step Cu<sub>3</sub>P is mixed with carbon black by non-reactive ball milling. Structure and morphology are characterized by X-ray diffraction (XRD) as well as scanning and transmission electron microscopy (SEM, TEM). The electrochemical properties are studied in Li and Na half cells with different types of electrolytes based on carbonates (EC:DMC mixture) or diglyme, with the latter clearly leading to better results such as higher capacity, better cycle life and smaller polarization. After 120 cycles, the Li-cell showed a capacity of 210 mAh g<sup>−1</sup> while around 120 mAh g<sup>−1</sup> were found for the Na cell. The contribution of the carbon black is negligible in case of the Li cell while it becomes an important factor in the Na cell. Electrode expansion/shrinkage of the electrode during cycling (“breathing”) as determined by in situ dilatometry is fairly constant in diglyme electrolytes while rapid fading is observed in carbonate electrolytes.</p></div>","PeriodicalId":34318,"journal":{"name":"Journal of Power Sources Advances","volume":"6 ","pages":"Article 100031"},"PeriodicalIF":4.5,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.powera.2020.100031","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"103466552","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: 6

Towards dry and contaminant free Ca(BF4)2-based electrolytes for Ca plating 用于镀钙的干燥无污染Ca(BF4)2基电解质

IF 4.5

Journal of Power Sources Advances Pub Date : 2020-12-01 DOI: 10.1016/j.powera.2020.100032

Juan D. Forero-Saboya , Matic Lozinšek , Alexandre Ponrouch

引用次数: 6

Conducting polymer composites as water-dispersible electrode matrices for Li-Ion batteries: Synthesis and characterization 锂离子电池水分散电极基导电聚合物复合材料的合成与表征

IF 4.5

Journal of Power Sources Advances Pub Date : 2020-12-01 DOI: 10.1016/j.powera.2020.100033

Van At Nguyen , Jian Wang , Christian Kuss

{"title":"Conducting polymer composites as water-dispersible electrode matrices for Li-Ion batteries: Synthesis and characterization","authors":"Van At Nguyen , Jian Wang , Christian Kuss","doi":"10.1016/j.powera.2020.100033","DOIUrl":"10.1016/j.powera.2020.100033","url":null,"abstract":"<div><p>As battery materials increase in energy density, the likelihood of larger morphological changes during cycling increases. Current PVDF/carbon electrode matrices are ill-prepared for such materials and new battery electrode matrices are required. Typical strategies replace PVDF by aqueous binders, utilize other carbonaceous conductive additives or add small amounts of conducting polymers. In this study, we propose a class of water-processable, self-conductive electrode matrices that relies on the combination of polyelectrolyte binders with conducting polymers. By in situ polymerizing conducting polymer monomers in an aqueous solution of carboxylate-containing polymers, new electrode matrices are synthesized, in which components are intimately mixed at the nano-scale. Herein, the molecular composite polypyrrole:carboxymethyl cellulose (PPy:CMC), as a representative electrode matrix, allows the water-based electrode fabrication of carbon-additive-free electrodes. No additional binders and conductive additives are required to fabricate electrodes due to the adhesive and conductive features of PPy:CMC composites. This study paves the way for developing a promising type of electrode matrices for Li-ion batteries based on conducting polymer molecular composites that are adhesive and conductive, ensuring high-energy-density battery materials maintain active over more cycles.</p></div>","PeriodicalId":34318,"journal":{"name":"Journal of Power Sources Advances","volume":"6 ","pages":"Article 100033"},"PeriodicalIF":4.5,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.powera.2020.100033","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"101885383","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: 3

Scanning acoustic microscopy as a non-destructive imaging tool to localize defects inside battery cells 扫描声学显微镜作为一种非破坏性成像工具，用于定位电池内部缺陷

IF 4.5

Journal of Power Sources Advances Pub Date : 2020-12-01 DOI: 10.1016/j.powera.2020.100035

L. Pitta Bauermann, L.V. Mesquita, C. Bischoff, M. Drews, O. Fitz, A. Heuer, D. Biro

引用次数: 30

Operando characterisation of the impact of carbon monoxide on PEMFC performance using isotopic labelling and gas analysis 使用同位素标记和气体分析的一氧化碳对PEMFC性能影响的操作表征

IF 4.5

Journal of Power Sources Advances Pub Date : 2020-12-01 DOI: 10.1016/j.powera.2020.100036

Hans Becker , Thomas Bacquart , Mark Perkins , Niamh Moore , Jari Ihonen , Gareth Hinds , Graham Smith

{"title":"Operando characterisation of the impact of carbon monoxide on PEMFC performance using isotopic labelling and gas analysis","authors":"Hans Becker , Thomas Bacquart , Mark Perkins , Niamh Moore , Jari Ihonen , Gareth Hinds , Graham Smith","doi":"10.1016/j.powera.2020.100036","DOIUrl":"https://doi.org/10.1016/j.powera.2020.100036","url":null,"abstract":"<div><p>Impurities in hydrogen can have a detrimental effect on the performance of polymer electrolyte membrane fuel cells (PEMFCs) used in automotive applications. However, the establishment of reliable threshold limits for each impurity is hampered by a lack of information on the distribution and speciation of impurities within the cell, including the impact of internal reactions and gas crossover. Here we describe a novel <em>operando</em> method for detailed investigation of the impact of impurities on a single cell PEMFC, using a combination of isotopic labelling and measurement of gas composition at the anode exhaust via Gas Chromatography – Methaniser with Flame Ionisation Detector (GC-Methaniser-FID) and Selected Ion Flow Tube – Mass Spectrometry (SIFT-MS). We demonstrate the utility of this approach in the study of the impact of internal air bleed on carbon monoxide (CO) poisoning, enabling quantification of the surface coverage of CO on the anode catalyst as a function of cathode back-pressure. This technique shows great promise as a diagnostic tool for the investigation of the impact of a wide range of impurities at stack level (e.g. hydrocarbons, ammonia, halogenated compounds).</p></div>","PeriodicalId":34318,"journal":{"name":"Journal of Power Sources Advances","volume":"6 ","pages":"Article 100036"},"PeriodicalIF":4.5,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.powera.2020.100036","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91706584","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: 5

Unravelling high-temperature stability of lithium-ion battery with lithium-rich oxide cathode in localized high-concentration electrolyte 局部高浓度电解液中富锂氧化物正极锂离子电池的高温稳定性研究

IF 4.5

Journal of Power Sources Advances Pub Date : 2020-10-01 DOI: 10.1016/j.powera.2020.100024

Xianhui Zhang , Hao Jia , Yaobin Xu , Lianfeng Zou , Mark H. Engelhard , Bethany E. Matthews , Chongmin Wang , Ji-Guang Zhang , Wu Xu

{"title":"Unravelling high-temperature stability of lithium-ion battery with lithium-rich oxide cathode in localized high-concentration electrolyte","authors":"Xianhui Zhang , Hao Jia , Yaobin Xu , Lianfeng Zou , Mark H. Engelhard , Bethany E. Matthews , Chongmin Wang , Ji-Guang Zhang , Wu Xu","doi":"10.1016/j.powera.2020.100024","DOIUrl":"10.1016/j.powera.2020.100024","url":null,"abstract":"<div><p>Lithium (Li)-rich manganese (Mn)-rich oxide (LMR) cathode materials, despite of the high specific capacity up to 250 mAh g<sup>−1</sup> suffer from instability of cathode/electrolyte interfacial layer at high working voltages, causing continuous voltage decay and capacity fading, especially at elevated temperatures. In various battery systems, localized high-concentration electrolytes (LHCEs) have been widely reported as a promising candidate to form effective electrode/electrolyte interphases. Here, an optimized LHCE is studied in graphite (Gr)-based full cells containing LMR cathode, being cycled at 25, 45 and 60 °C with the reference of a conventional LiPF<sub>6</sub>-based electrolyte. It is revealed that the LHCE can effectively suppress continuous electrolyte decompositions and mitigate the dissolution of Mn ions due to the formation of more protective electrode/electrolyte interphases on both anode and cathode, which, in turn, lead to significantly improved cycling stability and enhanced rate capability under the selected temperatures. The mechanistic understanding on the failure of the conventional LiPF<sub>6</sub>-containing electrolyte and the function of the LHCE in Gr||LMR cells under high temperatures provides valuable perspectives of electrolyte development for practical applications of LMR cathodes in high energy density batteries over a wide temperature range.</p></div>","PeriodicalId":34318,"journal":{"name":"Journal of Power Sources Advances","volume":"5 ","pages":"Article 100024"},"PeriodicalIF":4.5,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.powera.2020.100024","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"97765370","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: 19

A high-temperature anion-exchange membrane fuel cell 高温阴离子交换膜燃料电池

IF 4.5

Journal of Power Sources Advances Pub Date : 2020-10-01 DOI: 10.1016/j.powera.2020.100023

John C. Douglin , John R. Varcoe , Dario R. Dekel

引用次数: 65

Self-discharge of lithium-ion capacitors 锂离子电容器的自放电

IF 4.5

Journal of Power Sources Advances Pub Date : 2020-10-01 DOI: 10.1016/j.powera.2020.100026

Binson Babu, Andrea Balducci

引用次数: 10