{"id":2056,"date":"2025-06-10T12:21:48","date_gmt":"2025-06-10T03:21:48","guid":{"rendered":"https:\/\/supraceramics.jp\/?p=2056"},"modified":"2025-06-10T12:21:48","modified_gmt":"2025-06-10T03:21:48","slug":"publication-j-mater-chem-a-motohashi-kageyama-takeiri-et-al-thermally-stable-proton-conducting-oxy-hydroxides-synthesized-in-concentrated-water-vapor","status":"publish","type":"post","link":"https:\/\/supraceramics.jp\/en\/2025\/06\/2056\/","title":{"rendered":"Publication | J. Mater. Chem. A (Motohashi, Kageyama, Takeiri et al.) \u201cThermally stable proton-conducting oxy-hydroxides synthesized in concentrated water vapor\u201d"},"content":{"rendered":"<p>Thermally stable proton-conducting oxy-hydroxides synthesized in concentrated water vapor<\/p>\n<p>Kenji Arai, Yoko Kokubo, Yusuke Asai, Satoshi Ogawa, *Miwa Saito, Maria Kirsanova, Iaroslava Shakhova, Artem Abakumov, Fumitaka Takeiri, Hiroshi Kageyama, *Teruki Motohashi<\/p>\n<p>The diverse functionalities of (oxy-)hydroxides, such as electrocatalytic activity of transition-metal oxy-hydroxides in the oxygen evolution reaction (OER) and ion exchange capabilities of layered double hydroxides (LDHs), continue to attract significant interest. However, these compounds are typically synthesized in aqueous solutions at room temperature, under hydrothermal conditions, or in mild vapor atmospheres. Here, we present a novel (oxy-)hydroxide synthesis technique called \u201cvapor hydroxidation,\u201d which is conducted in a highly concentrated water vapor atmosphere at elevated temperatures. Structural analysis revealed the formation of a new oxy-hydroxide, [Ba2Ox(OH)y]0.55InO2, with a misfit-layered structure, characterized by alternating incommensurate barium hydroxide bilayers and indium oxide blocks. Unlike known (oxy-)hydroxides, this oxy-hydroxide displays exceptional thermal stability, retaining hydroxide ions within its crystal structure up to approximately 700 \u00b0C. These features suggest promising potential for high-temperature proton conductivity, as demonstrated by an electrical conductivity of 5 \u00d7 10\u22124 S cm\u22121 at 500 \u00b0C even under dry argon. Our \u201cvapor hydroxidation\u201d method thus opens up a new avenue for the development of proton-functional materials with unconventional chemical and electronic characteristics.<\/p>\n<p><a href=\"https:\/\/pubs.rsc.org\/en\/content\/articlehtml\/2025\/ta\/d5ta01492a\"><br \/>\n<em>J. Mater. Chem. A<\/em> (2025) in press. (DOI: 10.1039\/D5TA01492A)<br \/>\n<\/a><br \/>\nSelected as Outside Back Cover<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Thermally stable proton-conducting oxy-hydroxides synthesized in concentrated water vapor Kenji Arai, Yoko Kokubo, Yusuke Asai, Satoshi Ogawa, *Miwa Saito, Maria Kirsanova, Iaroslava Shakhova, Artem Abakumov, Fumitaka Takeiri, Hiroshi Kageyama, *Teruki Motohashi The diverse functionalities of (oxy-)hydroxides, such as electrocatalytic activity of transition-metal oxy-hydroxides in the oxygen evolution reaction (OER) and ion exchange capabilities of layered [&hellip;]<\/p>\n","protected":false},"author":222414606,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_themeisle_gutenberg_block_has_review":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_locale":"en_US","_original_post":"https:\/\/supraceramics.jp\/?p=2054","_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[124830],"tags":[],"class_list":["post-2056","post","type-post","status-publish","format-standard","hentry","category-news","en-US"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/pe2JgX-xa","jetpack-related-posts":[{"id":2054,"url":"https:\/\/supraceramics.jp\/2025\/06\/2054\/","url_meta":{"origin":2056,"position":0},"title":"Publication | J. Mater. Chem. A (Motohashi, Kageyama, Takeiri et al.) \u201cThermally stable proton-conducting oxy-hydroxides synthesized in concentrated water vapor\u201d","author":"shorike","date":"2025\u5e746\u670810\u65e5","format":false,"excerpt":"\u5171\u540c\u7814\u7a76\u6210\u679c\uff1a\u30d7\u30ed\u30c8\u30f3\u4f1d\u5c0e\u4f53\u3001\u56fa\u4f53\u9178\u89e6\u5a92\u306a\u3069\u6c34\u9178\u5316\u7269\u7cfb\u6a5f\u80fd\u6027\u6750\u6599\u306e\u65b0\u898f\u5408\u6210\u6cd5\u3092\u958b\u767a\uff08A01\u672c\u6a4b\u3001A01\u9670\u5c71\uff08\u5354\u529b\u8005\uff09\u3001B01\u7af9\u5165\uff08\u5354\u529b\u8005\uff09\uff09 Thermally stable proton-conducting oxy-hydroxides synthesized in concentrated water vapor Kenji Arai, Yoko Kokubo, Yusuke Asai, Satoshi Ogawa, *Miwa Saito, Maria Kirsanova, Iaroslava Shakhova, Artem Abakumov, Fumitaka Takeiri, Hiroshi Kageyama, *Teruki Motohashi \u672c\u7814\u7a76\u3067\u306f\u3001\uff08\u9178\uff09\u6c34\u9178\u5316\u7269\u306e\u5408\u6210\u6cd5\u300c\u6c17\u76f8\u6c34\u9178\u5316\u7269\u5316\u53cd\u5fdc\uff08\u82f1\u8a9e\u3067\u306f\u9020\u8a9e \u201cvapor hydroxidation\u201d \u3068\u547d\u540d\uff09\u300d\u3092\u72ec\u81ea\u958b\u767a\u3057\u3001\u65b0\u898f\u9178\u6c34\u9178\u5316\u7269 [Ba2Ox(OH)y]0.55InO2\u3092\u767a\u898b\u3057\u307e\u3057\u305f\u3002\u672c\u5408\u6210\u6cd5\u306e\u30dd\u30a4\u30f3\u30c8\u306f\u3001\u91d1\u5c5e\u9178\u5316\u7269\u306e\u524d\u99c6\u4f53\u3092\u5f93\u6765\u5408\u6210\u6cd5\u3068\u5927\u304d\u304f\u7570\u306a\u308b500\u2103\u4ee5\u4e0a\u3001\u6c34\u84b8\u6c1780\uff5e100\u4f53\u7a4d%\u3067\u76f4\u63a5\u6c34\u9178\u5316\u7269\u5316\u3059\u308b\u3068\u3053\u308d\u3067\u3059\u3002\u3053\u306e\u6c34\u84b8\u6c17\u6fc3\u5ea6\u306f\u5ba4\u6e29\u98fd\u548c\u6c34\u84b8\u6c17\u306e30\u500d\u4ee5\u4e0a\uff08\u3064\u307e\u308a\u3001\u6e7f\u5ea63000%\uff09\u3067\u3042\u308a\u3001\u9ad8\u6e29\u9ad8\u6fc3\u5ea6\u6c34\u84b8\u6c17\u96f0\u56f2\u6c17\u3067\u306e\u307f\u5b89\u5b9a\u306b\u5b58\u5728\u3059\u308b\u65b0\u7269\u8cea\u30fb\u65b0\u6750\u6599\u306e\u767a\u898b\u3092\u72d9\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4eca\u56de\u898b\u51fa\u3057\u305f\u65b0\u898f\u9178\u6c34\u9178\u5316\u7269\u306f\u30d0\u30ea\u30a6\u30e0\u6c34\u9178\u5316\u7269\u5c64\u3068\u30a4\u30f3\u30b8\u30a6\u30e0\u9178\u5316\u7269\u5c64\u304c\u7a4d\u5c64\u3057\u305f\u30e6\u30cb\u30fc\u30af\u306a\u7d50\u6676\u69cb\u9020\u3092\u3082\u3063\u3066\u304a\u308a\u3001\u30d7\u30ed\u30c8\u30f3\u4f1d\u5c0e\u4f53\u3068\u3057\u3066\u7279\u7570\u306a\u6319\u52d5\u3092\u793a\u3059\u3053\u3068\u304c\u660e\u3089\u304b\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u4eca\u5f8c\u3082\u300c\u6c17\u76f8\u6c34\u9178\u5316\u7269\u5316\u53cd\u5fdc\u300d\u3092\u6d3b\u7528\u3057\u3066\u672a\u8e0f\u63a2\u7d22\u7a7a\u9593\u306b\u304a\u3051\u308b\u9769\u65b0\u7684\u306a\u30d7\u30ed\u30c8\u30f3\u6a5f\u80fd\u6027\u6750\u6599\u306e\u5275\u88fd\u304c\u671f\u5f85\u3067\u304d\u307e\u3059\u3002 J. Mater. Chem. A (2025) in press. (DOI: 10.1039\/D5TA01492A) Selected as Outside Back\u2026","rel":"","context":"In &quot;News&quot;","block_context":{"text":"News","link":"https:\/\/supraceramics.jp\/en\/category\/news\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2175,"url":"https:\/\/supraceramics.jp\/en\/2025\/09\/2175\/","url_meta":{"origin":2056,"position":1},"title":"Publication | Inorg. Chem. (Motohashi, Nambu, Kimoto, Sugimoto, Inada et al.) \u201cA Sr-Ga Oxy-Hydroxide with High Thermal Stability: Unraveling Its Characteristic Hydrogen-Bond Network\u201d","author":"shorike","date":"2025\u5e749\u670826\u65e5","format":false,"excerpt":"A Sr-Ga Oxy-Hydroxide with High Thermal Stability: Unraveling Its Characteristic Hydrogen-Bond Network Yusuke Asai, Yuto Nishihara, Yoko Kokubo, Kenji Arai, Kosaku Ohishi, Satoshi Ogawa, Miwa Saito, Yusuke Nambu, Maxim Avdeev, Koji Kimoto, Zi Lang Goo, Kunihisa Sugimoto, Miki Inada, Katsuro Hayashi, Teruki Motohashi Oxy-hydroxides represent potential proton carriers for solid\u2026","rel":"","context":"In &quot;News&quot;","block_context":{"text":"News","link":"https:\/\/supraceramics.jp\/en\/category\/news\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2173,"url":"https:\/\/supraceramics.jp\/2025\/09\/2173\/","url_meta":{"origin":2056,"position":2},"title":"Publication | Inorg. Chem. (Motohashi, Nambu, Kimoto, Sugimoto, Inada et al.) \u201cA Sr-Ga Oxy-Hydroxide with High Thermal Stability: Unraveling Its Characteristic Hydrogen-Bond Network\u201d","author":"shorike","date":"2025\u5e749\u670826\u65e5","format":false,"excerpt":"\u5171\u540c\u7814\u7a76\u6210\u679c\uff1a\u71c3\u6599\u96fb\u6c60\u3084\u89e6\u5a92\u306a\u3069\u3078\u306e\u5fdc\u7528\u304c\u671f\u5f85\u3055\u308c\u308b\u30d7\u30ed\u30c8\u30f3\u6a5f\u80fd\u6027\u6750\u6599\u3092\u767a\u898b\uff08A01\u672c\u6a4b\u3001B01\u5357\u90e8\u3001B01\u6728\u672c\u3001B01\u6749\u672c\u3001B01\u7a32\u7530\uff09 A Sr-Ga Oxy-Hydroxide with High Thermal Stability: Unraveling Its Characteristic Hydrogen-Bond Network Yusuke Asai, Yuto Nishihara, Yoko Kokubo, Kenji Arai, Kosaku Ohishi, Satoshi Ogawa, Miwa Saito, Yusuke Nambu, Maxim Avdeev, Koji Kimoto, Zi Lang Goo, Kunihisa Sugimoto, Miki Inada, Katsuro Hayashi, Teruki Motohashi \u5353\u8d8a\u3057\u305f\u71b1\u5b89\u5b9a\u6027\u3092\u6709\u3059\u308b\u30b9\u30c8\u30ed\u30f3\u30c1\u30a6\u30e0\u30fb\u30ac\u30ea\u30a6\u30e0\u9178\u6c34\u9178\u5316\u7269Sr2Ga3O6(OH)\u3092\u767a\u898b\u3057\u307e\u3057\u305f\u3002\u672c\u5316\u5408\u7269\u306f\u3001\u72ec\u81ea\u958b\u767a\u3057\u305f\u300c\u6c17\u76f8\u6c34\u9178\u5316\u7269\u5316\u53cd\u5fdc\uff08\u82f1\u8a9e\u3067\u306f\u9020\u8a9e \u201cvapor hydroxidation\u201d \u3068\u547d\u540d\uff09\u300d\u3092\u7528\u3044\u3066\u5408\u6210\u3055\u308c\u3001\u96fb\u5b50\u9855\u5fae\u93e1\u3001X \u7dda\u56de\u6298\u3001\u4e2d\u6027\u5b50\u56de\u6298\u3001\u8d64\u5916\u5206\u5149\u3092\u7528\u3044\u305f\u5148\u7aef\u5206\u6790\u306b\u3088\u308a\u3001\u8a73\u7d30\u306a\u7d50\u6676\u69cb\u9020\u304a\u3088\u3073\u9ad8\u71b1\u5b89\u5b9a\u6027\u306b\u5bc4\u4e0e\u3059\u308b\u6c34\u7d20\u7d50\u5408\u306e\u5b58\u5728\u304c\u660e\u3089\u304b\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u672c\u6210\u679c\u306b\u3088\u308a\u3001\uff08\u9178\uff09\u6c34\u9178\u5316\u7269\u306e\u958b\u767a\u7814\u7a76\u304c\u52a0\u901f\u3055\u308c\u3001\u71c3\u6599\u96fb\u6c60\u3084\u56fa\u4f53\u9178\u89e6\u5a92\u306a\u3069\u3078\u5fdc\u7528\u53ef\u80fd\u306a\u9769\u65b0\u7684\u30d7\u30ed\u30c8\u30f3\u6a5f\u80fd\u6027\u6750\u6599\u306e\u5275\u88fd\u306b\u7e4b\u304c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 Inorg.\u2026","rel":"","context":"In &quot;News&quot;","block_context":{"text":"News","link":"https:\/\/supraceramics.jp\/en\/category\/news\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1884,"url":"https:\/\/supraceramics.jp\/en\/2023\/07\/1884\/","url_meta":{"origin":2056,"position":3},"title":"Publication | Angew. Chem. Int. Ed. (Ohtani, Onda et al.) &#8220;Structural-transformation-induced Drastic Luminescence Changes in an Organic-Inorganic Hybrid [ReN(CN)4]2- Salt Triggered by Chemical Stimuli&#8221;","author":"shorike","date":"2023\u5e747\u67081\u65e5","format":false,"excerpt":"Structural-transformation-induced Drastic Luminescence Changes in an Organic-Inorganic Hybrid [ReN(CN)4]2- Salt Triggered by Chemical Stimuli Ryo Ohtani, Jianeng Xu, Junichi Yanagisawa, Yuudai Iwai, Takumi Ehara, Kiyoshi Miyata, Ken Onda, Jenny Pirillo, Yuh Hijikata, Tomoaki Hiraoka, Shinya Hayami, Benjamin Le Ouay, Masaaki Ohba We synthesized a (1-propylpyridinium)2[ReN(CN)4]-type organic\u2013inorganic hybrid exhibiting water-vapor-induced drastic\u2026","rel":"","context":"In &quot;News&quot;","block_context":{"text":"News","link":"https:\/\/supraceramics.jp\/en\/category\/news\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1216,"url":"https:\/\/supraceramics.jp\/2022\/12\/1216\/","url_meta":{"origin":2056,"position":4},"title":"The 1st Symposium on Materials Chemistry for New Properties and Functions","author":"shorike","date":"2022\u5e7412\u670811\u65e5","format":false,"excerpt":"The 2nd Symposium on Materials Chemistry for New Properties and Functions Ookayama Main building 3F Room 345 (\u7b2c2 \u4f1a\u8b70\u5ba4), Tokyo Institute of Technology 5 December, 2022 Program: 9:30 Opening (Kazuhiko Maeda, Tokyo Tech) 9:35 Development of Sustainable and Safe Synthesis Method of Metal Oxynitrides Using Solid-Nitriding Agents (Kiyofumi Katagiri, Hiroshima\u2026","rel":"","context":"In &quot;Event&quot;","block_context":{"text":"Event","link":"https:\/\/supraceramics.jp\/en\/category\/event\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1850,"url":"https:\/\/supraceramics.jp\/en\/2024\/08\/1850\/","url_meta":{"origin":2056,"position":5},"title":"Publication | Inorg. Chem. (Katagiri, Sugimoto, Motohashi et al.) \u201cMechanistic Insights on the Formation of a Carbodiimide Ion from Urea in La2O2NCN Synthesis Based on the \u201cProanion\u201d Strategy\u201d","author":"shorike","date":"2024\u5e748\u67088\u65e5","format":false,"excerpt":"Mechanistic Insights on the Formation of a Carbodiimide Ion from Urea in La2O2NCN Synthesis Based on the \u201cProanion\u201d Strategy Oomi Sumioka, Naoki Tarutani, Kiyofumi Katagiri, Kei Inumaru, Zi Lang Goo, Kunihisa Sugimoto, Yusuke Asai, Miwa Saito, and Teruki Motohashi This study affords mechanistic insights into the formation mechanism of carbodiimide\u2026","rel":"","context":"In &quot;News&quot;","block_context":{"text":"News","link":"https:\/\/supraceramics.jp\/en\/category\/news\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/posts\/2056","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/users\/222414606"}],"replies":[{"embeddable":true,"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/comments?post=2056"}],"version-history":[{"count":1,"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/posts\/2056\/revisions"}],"predecessor-version":[{"id":2057,"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/posts\/2056\/revisions\/2057"}],"wp:attachment":[{"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/media?parent=2056"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/categories?post=2056"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/tags?post=2056"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}