{"id":18321,"date":"2017-10-24T12:00:00","date_gmt":"2017-10-24T12:00:00","guid":{"rendered":"https:\/\/dev.inrs.ca\/when-humidity-benefits-batteries\/"},"modified":"2020-11-11T11:04:37","modified_gmt":"2020-11-11T16:04:37","slug":"when-humidity-benefits-batteries","status":"publish","type":"post","link":"https:\/\/dev.inrs.ca\/en\/news\/when-humidity-benefits-batteries\/","title":{"rendered":"When humidity benefits batteries"},"content":{"rendered":"\n

Sometimes you can find simple solutions to complex problems, as demonstrated by the team of INRS\u2019s Dr. Lionel Rou\u00e9<\/a>, which cleverly improved the performance of silicon-based electrodes for lithium-ion batteries. It is well known that the robustness of the electrodes in these batteries, which are used in a host of devices, is key to their useful life. According to the team\u2019s paper<\/a> published in the journal Advanced Energy Materials<\/em>, electrode performance can be improved by up to ten times by using a maturation process.<\/strong><\/p>\n\n\n\n

\"\"
Professor Lionel Rou\u00e9 \u00a9 Christian Fleury<\/em>
<\/figcaption><\/figure><\/div>\n\n\n\n

Lithium-ion batteries (LiBs)\u2014the most common type of battery used in electronic devices and electric vehicles\u2014have many benefits, including a high energy density, reduced memory effect, and low self-discharge.  However, as products evolve, manufacturers must produce increasingly more efficient batteries.  Another challenge will be making them flexible. <\/p>\n\n\n\n

These new features put tremendous stress on the electrodes, which are a delicate part of LiBs.  To meet these requirements, facilitate manufacturing, and increase the life of LiBs, researchers want to improve the mechanical properties of electrodes. This is especially critical for silicon-based electrodes, whose volume expansion can reach 270% in cycling. <\/p>\n\n\n\n

In Dr. Rou\u00e9\u2019s laboratory, energy science and materials master\u2019s student Cuauht\u00e9moc Reale Hernandez developed a postprocessing treatment for silicon-based electrodes, giving practical substance to the improvement sought. Before cell assembly, electrodes are placed in a humid environment for two to three days. They are then dried and assembled.<\/p>\n\n\n\n

This very simple step leads to impressive results. It strengthens the connections between silicon particles, which significantly strengthens the electrode structure. Adhesion between the copper current collector film and the electrode is also strengthened. This leads to greater mechanical stability and a sharp increase in the number of charge\/discharge cycles supported by the LiB. What\u2019s more, the storage capacity of silicon-based electrodes is three times greater than that of the graphite anodes used in commercial lithium-ion batteries. <\/p>\n\n\n\n

Silicon-based electrodes that have undergone maturation are a simple solution that can be easily integrated into the manufacturing process to produce more durable batteries, which are widely sought for both users of electronic devices and electric vehicles and the big companies that design them. <\/p>\n\n\n\n

About the paper<\/strong><\/h2>\n\n\n\n

The results mentioned were published in the journal Advanced Energy Materials under the original title \u201cA Facile and Very Effective Method to Enhance the Mechanical Strength and the Cyclability of Si-Based Electrodes for Li-Ion Batteries<\/a>\u201d (DOI: 10.1002\/aenm.201701787). <\/p>\n\n\n\n

The paper was produced by Cuauht\u00e9moc Reale Hernandez, Aur\u00e9lien Etiemble, Thierry Douillard, Driss Mazouzi, Zouina Karkar, Eric Maire, Dominique Guyomard, and Bernard Lestriez under the direction of Dr. Lionel Rou\u00e9. The study was made possible thanks to the financial support of the Natural Sciences and Engineering Research Council of Canada (NSERC) and Transition \u00e9nerg\u00e9tique Qu\u00e9bec.\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"

Sometimes you can find simple solutions to complex problems, as demonstrated by the team of INRS\u2019s Dr. Lionel Rou\u00e9, which cleverly improved the performance of silicon-based electrodes for lithium-ion batteries. It is well known that the robustness of the electrodes in these batteries, which are used in a host of devices, is key to their useful life. According to the team\u2019s paper published in the journal Advanced Energy Materials, electrode performance can be improved by up to ten times by using a maturation process.<\/p>\n","protected":false},"author":1,"featured_media":18322,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[688],"tags":[],"sectors":[735],"class_list":["post-18321","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-innover-a-linrs-en","sectors-energie-en"],"acf":[],"yoast_head":"\nWhen humidity benefits batteries | INRS<\/title>\n<meta name=\"description\" content=\"Sometimes you can find simple solutions to complex problems, as demonstrated by the team of INRS\u2019s Dr. Lionel Rou\u00e9, which cleverly improved the per\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta 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