{"id":1335,"date":"2025-04-20T22:30:59","date_gmt":"2025-04-21T02:30:59","guid":{"rendered":"http:\/\/www.joshuagallaway.com\/?p=1335"},"modified":"2025-04-20T22:31:01","modified_gmt":"2025-04-21T02:31:01","slug":"tem-of-hydrated-and-dehydrated-birnessite","status":"publish","type":"post","link":"http:\/\/www.joshuagallaway.com\/?p=1335","title":{"rendered":"TEM of hydrated and dehydrated birnessite"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><a href=\"http:\/\/www.joshuagallaway.com\/wp-content\/uploads\/Matthew-Kim-dehydrated-birnessite.png\"><img decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"490\" src=\"http:\/\/www.joshuagallaway.com\/wp-content\/uploads\/Matthew-Kim-dehydrated-birnessite-1024x490.png\" alt=\"\" class=\"wp-image-1336\" srcset=\"http:\/\/www.joshuagallaway.com\/wp-content\/uploads\/Matthew-Kim-dehydrated-birnessite-1024x490.png 1024w, http:\/\/www.joshuagallaway.com\/wp-content\/uploads\/Matthew-Kim-dehydrated-birnessite-300x143.png 300w, http:\/\/www.joshuagallaway.com\/wp-content\/uploads\/Matthew-Kim-dehydrated-birnessite-768x367.png 768w, http:\/\/www.joshuagallaway.com\/wp-content\/uploads\/Matthew-Kim-dehydrated-birnessite-1536x734.png 1536w, http:\/\/www.joshuagallaway.com\/wp-content\/uploads\/Matthew-Kim-dehydrated-birnessite-500x239.png 500w, http:\/\/www.joshuagallaway.com\/wp-content\/uploads\/Matthew-Kim-dehydrated-birnessite.png 1824w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p>I had a reason to look at Matt Kim&#8217;s PhD dissertation, which was about synthesis of layered MnO<sub>2<\/sub> birnessite compounds for Li-ion and Na-ion batteries. <a href=\"https:\/\/pubs.rsc.org\/en\/content\/articlelanding\/2018\/bb\/d3ta00684k\/unauth\">We published his work in this paper<\/a>, but at the end of his dissertation I saw this image that <em>didn&#8217;t make it into the paper<\/em>. On the left you see a regular birnessite with a 7 angstrom interlayer, and on the right you see a dehydrated version, which is smaller because it is dehydrated and the interlayer H<sub>2<\/sub>O is gone.<\/p>\n\n\n\n<p>I was looking at this and I was amazed because on the left I can <em><strong>see<\/strong><\/em> the H<sub>2<\/sub>O molecules between the layers. On the right you see black space only. Kind of a work of art. Matt, I&#8217;m sorry I left this out of the paper. Cutting the 60 figures down into a manuscript wasn&#8217;t the most orderly process, and I really should have left this one in. \ud83d\ude42<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I had a reason to look at Matt Kim&#8217;s PhD dissertation, which was about synthesis of layered MnO2 birnessite compounds for Li-ion and Na-ion batteries. We published his work in this paper, but at the end of his dissertation I &hellip; <a href=\"http:\/\/www.joshuagallaway.com\/?p=1335\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[18],"tags":[],"_links":{"self":[{"href":"http:\/\/www.joshuagallaway.com\/index.php?rest_route=\/wp\/v2\/posts\/1335"}],"collection":[{"href":"http:\/\/www.joshuagallaway.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.joshuagallaway.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.joshuagallaway.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.joshuagallaway.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1335"}],"version-history":[{"count":3,"href":"http:\/\/www.joshuagallaway.com\/index.php?rest_route=\/wp\/v2\/posts\/1335\/revisions"}],"predecessor-version":[{"id":1339,"href":"http:\/\/www.joshuagallaway.com\/index.php?rest_route=\/wp\/v2\/posts\/1335\/revisions\/1339"}],"wp:attachment":[{"href":"http:\/\/www.joshuagallaway.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1335"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.joshuagallaway.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1335"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.joshuagallaway.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1335"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}