{"id":791,"date":"2019-07-11T11:37:35","date_gmt":"2019-07-11T11:37:35","guid":{"rendered":"https:\/\/budker.uni-mainz.de\/?p=791"},"modified":"2019-07-11T11:37:36","modified_gmt":"2019-07-11T11:37:36","slug":"looking-into-batteries-with-magnetometers","status":"publish","type":"post","link":"https:\/\/budker.uni-mainz.de\/?p=791","title":{"rendered":"Looking into batteries with magnetometers"},"content":{"rendered":"\n<p>In the rapidly developing battery technology, is it desirable to determine the quality of battery cells by nondestructive measurements. We demonstrate the use of atomic magnetometry to detect states of battery charge [<a href=\"https:\/\/arxiv.org\/abs\/1905.12507\">1<\/a>]. We do so by\u00a0creating a map of the weak induced magnetic fields around a Li-ion battery cell as a function of its state of charge. We also study the effect of mechanical defects in the battery on its internal currents and magnetic susceptibility.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1007\" height=\"348\" src=\"https:\/\/budker.uni-mainz.de\/wp-content\/uploads\/2019\/07\/image.png\" alt=\"\" class=\"wp-image-792\" srcset=\"https:\/\/budker.uni-mainz.de\/wp-content\/uploads\/2019\/07\/image.png 1007w, https:\/\/budker.uni-mainz.de\/wp-content\/uploads\/2019\/07\/image-300x104.png 300w, https:\/\/budker.uni-mainz.de\/wp-content\/uploads\/2019\/07\/image-768x265.png 768w\" sizes=\"auto, (max-width: 1007px) 100vw, 1007px\" \/><figcaption> Magnetic field above the battery cell (a) and the corresponding\u00a0susceptibility (b) for batteries in various discharge states [<a href=\"https:\/\/arxiv.org\/abs\/1905.12507\">1<\/a>]. <\/figcaption><\/figure>\n\n\n\n<p>Reference:<\/p>\n\n\n\n<p>\n\n[1]&nbsp;Yinan Hu, Geoffrey Z. Iwata, Mohaddese Mohammadi, Emilia V. Silletta, Arne Wickenbrock, John W. Blanchard, Dmitry Budker,&nbsp;and&nbsp;Alexej Jerschow, Battery Diagnostics with Sensitive Magnetometry, arXiv:<a href=\"https:\/\/arxiv.org\/abs\/1905.12507\" target=\"_blank\" rel=\"noreferrer noopener\">1905.12507<\/a>&nbsp;(2019).\n\n<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the rapidly developing battery technology, is it desirable to determine the quality of battery cells by nondestructive measurements. We demonstrate the use of atomic magnetometry to detect states of battery charge [1]. We do so by\u00a0creating a map of the weak induced magnetic fields around a Li-ion battery cell as a function of its [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[1],"tags":[],"class_list":["post-791","post","type-post","status-publish","format-standard","hentry","category-default"],"_links":{"self":[{"href":"https:\/\/budker.uni-mainz.de\/index.php?rest_route=\/wp\/v2\/posts\/791","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/budker.uni-mainz.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/budker.uni-mainz.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/budker.uni-mainz.de\/index.php?rest_route=\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/budker.uni-mainz.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=791"}],"version-history":[{"count":1,"href":"https:\/\/budker.uni-mainz.de\/index.php?rest_route=\/wp\/v2\/posts\/791\/revisions"}],"predecessor-version":[{"id":793,"href":"https:\/\/budker.uni-mainz.de\/index.php?rest_route=\/wp\/v2\/posts\/791\/revisions\/793"}],"wp:attachment":[{"href":"https:\/\/budker.uni-mainz.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=791"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/budker.uni-mainz.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=791"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/budker.uni-mainz.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=791"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}