{"id":303794,"date":"2021-08-13T17:00:00","date_gmt":"2021-08-13T15:00:00","guid":{"rendered":"https:\/\/innovationorigins.com\/?p=303794"},"modified":"2021-08-13T17:00:00","modified_gmt":"2021-08-13T15:00:00","slug":"german-researchers-are-on-track-for-a-strong-and-stable-lithium-metal-battery","status":"publish","type":"post","link":"https:\/\/ioplus.nl\/archive\/en\/german-researchers-are-on-track-for-a-strong-and-stable-lithium-metal-battery\/","title":{"rendered":"German researchers are on track for a strong and stable lithium-metal battery"},"content":{"rendered":"\n

Researchers at the Karlsruher Institut f\u00fcr Technologie<\/a> (KIT) and the Helmholtz Institut Ulm<\/a> in Germany have developed a lithium-metal battery with a high energy density of 560 watts per kilogram and a storage capacity of 214 milliamps per gram. The battery is also exceptionally stable. At least 88% of the capacity remains intact even after 1000 charging cycles.<\/p>\n\n\n\n

It has long been known that lithium-metal batteries have a higher energy density than conventional lithium-ion batteries. The problem lies in the chemical reaction that takes place between electrolyte and metal parts.<\/p>\n\n\n\n

The trick that the researchers discovered is to use as a starting point a nickel-containing cathode (one of the poles in a battery) combined with a new type of electrolyte (the liquid or material between the two poles).<\/p>\n\n\n\n

LP30<\/h3>\n\n\n\n

For the research – which was published in the journal Joule<\/em> – tests were first conducted with a low-cobalt, nickel-rich cathode of the NCM88 type, along with a commonly available electrolyte (LP30).<\/p>\n\n\n\n

\"This<\/figure>\n\n\n\n

After one thousand charging cycles, the capacity of this battery had dropped to well below 40%. For an electric car, this is obviously not enough by far. It means stopping off at a recharging station much more often.<\/p>\n\n\n\n

“The problem with the LP30 electrolyte is that tiny cracks start to appear in the cathode,” says Stefano Passerini, leader of the electrochemistry project team at the Helmholtz Institute. ” Inside those cracks, the electrolyte reacts and destroys the structure. Besides that, a lithium-moss-like layer forms on the cathode, which degrades the energy capacity even further.”<\/p>\n\n\n\n

Solution<\/h3>\n\n\n\n

The solution was to replace LP30 with a volatile, non-flammable ionic liquid electrolyte with two anions<\/em> (ILE).<\/p>\n\n\n\n

“With the help of ILE, we were able to greatly limit the structural changes in the cathode,” said Guk-Tae Kim, one of the researchers.<\/p>\n\n\n\n

Why does this matter?<\/h3>\n\n\n\n

All breakthroughs in this field are closely followed by the science world. The majority of electric cars are currently driving around with lithium-ion batteries. This is a reliable technology that is also used in cell phones.<\/p>\n\n\n\n

The disadvantage, however, is the low energy density in relation to the mass. In other words, a lithium-ion battery takes up a lot of space. In the case of the lithium-metal battery, mass is less of an issue. It’s all about stability there, and that’s where the Germans now seem to be on the right track.<\/p>\n\n\n\n

See also our other articles on lithium-metal batteries<\/a>.<\/em><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Researchers at the Karlsruher Institut f\u00fcr Technologie (KIT) and the Helmholtz Institut Ulm in Germany have developed a lithium-metal battery with a high energy density of 560 watts per kilogram and a storage capacity of 214 milliamps per gram. The battery is also exceptionally stable. At least 88% of the capacity remains intact even after […]<\/p>\n","protected":false},"author":1723,"featured_media":514283,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"advgb_blocks_editor_width":"","advgb_blocks_columns_visual_guide":"","footnotes":""},"categories":[26049],"tags":[25751,64135,29730,31405,52640],"location":[24456],"article_type":[36684],"serie":[],"archives":[],"internal_archives":[],"reboot-archive":[],"class_list":["post-303794","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mobility","tag-batteries","tag-helmholtz-institut-ulm","tag-karlsruher-institut-fur-technologie","tag-kit-en","tag-lithium-batteries","location-germany","article_type-news"],"blocksy_meta":[],"acf":{"subtitle":"Lithium-metal batteries can store more energy per kilogram of material than a lithium-ion battery. The only disadvantage is stability. Researchers at KIT and Helmholtz say they have a solution.","text_display_homepage":false},"author_meta":{"display_name":"Maurits Kuypers","author_link":"https:\/\/ioplus.nl\/archive\/author\/maurits-kuypers\/"},"featured_img":"https:\/\/ioplus.nl\/archive\/wp-content\/uploads\/2022\/04\/2021_075_Rekordverdaechtige-Lithium-Metall-Batterie_1_72dpi.jpg","coauthors":[],"tax_additional":{"categories":{"linked":["Mobility<\/a>"],"unlinked":["Mobility<\/span>"]},"tags":{"linked":["batteries<\/a>","Helmholtz Institut Ulm<\/a>","Karlsruher Institut f\u00fcr Technologie<\/a>","KIT<\/a>","lithium batteries<\/a>"],"unlinked":["batteries<\/span>","Helmholtz Institut Ulm<\/span>","Karlsruher Institut f\u00fcr Technologie<\/span>","KIT<\/span>","lithium batteries<\/span>"]}},"comment_count":"0","relative_dates":{"created":"Posted 5 years ago","modified":"Updated 5 years ago"},"absolute_dates":{"created":"Posted on August 13, 2021","modified":"Updated on August 13, 2021"},"absolute_dates_time":{"created":"Posted on August 13, 2021 5:00 pm","modified":"Updated on August 13, 2021 5:00 pm"},"featured_img_caption":"","series_order":"","_links":{"self":[{"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/posts\/303794","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/users\/1723"}],"replies":[{"embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/comments?post=303794"}],"version-history":[{"count":0,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/posts\/303794\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/media\/514283"}],"wp:attachment":[{"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/media?parent=303794"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/categories?post=303794"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/tags?post=303794"},{"taxonomy":"location","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/location?post=303794"},{"taxonomy":"article_type","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/article_type?post=303794"},{"taxonomy":"serie","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/serie?post=303794"},{"taxonomy":"archives","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/archives?post=303794"},{"taxonomy":"internal_archives","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/internal_archives?post=303794"},{"taxonomy":"reboot-archive","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/reboot-archive?post=303794"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}