{"id":16064,"date":"2023-02-15T06:00:00","date_gmt":"2023-02-15T06:00:00","guid":{"rendered":"https:\/\/www.prnasia.com\/story\/archive\/4015198_HK15198_0"},"modified":"2023-02-15T06:00:00","modified_gmt":"2023-02-15T06:00:00","slug":"towards-inexpensive-and-highly-conductive-anion-exchange-membranes-wpi-mana","status":"publish","type":"post","link":"https:\/\/transmediavictoria.net.au\/?p=16064","title":{"rendered":"Towards Inexpensive and Highly Conductive Anion-Exchange Membranes: WPI-MANA"},"content":{"rendered":"
\n

TSUKUBA, Japan<\/span><\/span>, Feb. 15, 2023<\/span><\/span> \/PRNewswire\/ — An international research team at the International Center for Materials Nanoarchitectonics (WPI-MANA) has worked to improve the ionic conductivity of anion-exchange membranes (AEMs) made from layered double hydroxides (LDHs), laying the foundation for their use in many electrochemical applications.<\/p>\n

(Image: https:\/\/kyodonewsprwire.jp\/prwfile\/release\/M105739\/202302032656\/_prw_PI1fl_5tT8FF5G.jpg<\/a><\/u>)<\/p>\n

LDHs are inorganic compounds that can be made into extremely thin “nanosheets.” These flexible sheets are well-suited to serve as AEMs, which have a wide range of applications, including the manufacture of batteries, water treatment, and electrolysis.<\/p>\n

LDHs have ultrahigh ionic conductivity towards hydroxide ions, which facilitates the flow of current. Although LDH nanosheets can reach high levels of ionic conductivity of 10 to the power of minus 1 S\/cm, this value only affects ions moving in the in-plane direction; that is, along the nanosheet. In contrast, their ionic conductivity through the nanosheet –in the cross-plane direction– is about 10 to the power of minus 6 S\/cm, which is five orders of magnitude lower. This hinders fast ionic conduction across AEMs comprising restacked LDH nanosheets.<\/p>\n

Fortunately, a research team from WPI-MANA, led by Prof. Renzhi Ma<\/span>, has now found a solution to this problem. They used a simple vacuum-assisted filtration process to combine LDH nanosheets with LDH nanoparticles, producing a hybrid composite membrane. This membrane exhibited high ionic conductivity in both the in-plane and cross-plane directions.<\/p>\n

The researchers proposed that introducing nanoparticles reduced the restacking order of the nanosheets. This created diverse ion-conducting pathways in the composite membrane, ultimately boosting its ionic conductivity. “By changing the orientation of the nanosheets, their ultrahigh conductivity along the in-plane was leveraged to achieve fast transmembrane ionic transport,” explains Prof. Ma. The composite membrane achieved a conductivity level of 10 to the power of minus 2 S\/cm (about 10,000 times higher than pure LDH nanosheets) in the cross-plane direction.<\/p>\n

Prof. Ma says, “The excellent conductivity of our composite membranes will unlock their potential use as competitive AEMs for platinum-free electrochemical energy storage and conversion.” The team’s efforts will accelerate the development of less expensive AEMs for next-generation energy and environmental technologies.<\/p>\n

Research Highlights Vol. 81
https:\/\/www.nims.go.jp\/mana\/research\/highlights\/vol81.html<\/a><\/u><\/p>\n

MANA Research Highlights
https:\/\/www.nims.go.jp\/mana\/research\/highlights\/<\/a><\/u><\/p>\n

\"Cision\" View original content:https:\/\/www.prnewswire.com\/news-releases\/towards-inexpensive-and-highly-conductive-anion-exchange-membranes-wpi-mana-301747045.html<\/a><\/p>\n<\/p><\/div>\n

Source: International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS)<\/p>\n","protected":false},"excerpt":{"rendered":"

TSUKUBA, Japan, Feb. 15, 2023 \/PRNewswire\/ — An international research team at the International Center for Materials Nanoarchitectonics (WPI-MANA) has worked to improve the ionic conductivity of anion-exchange membranes (AEMs) made from layered double hydroxides (LDHs), laying the foundation for their use in many electrochemical applications. (Image: https:\/\/kyodonewsprwire.jp\/prwfile\/release\/M105739\/202302032656\/_prw_PI1fl_5tT8FF5G.jpg) LDHs are inorganic compounds that can be made […]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-16064","post","type-post","status-publish","format-standard","hentry","category-business-news"],"yoast_head":"\nTowards Inexpensive and Highly Conductive Anion-Exchange Membranes: WPI-MANA - My Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/transmediavictoria.net.au\/?p=16064\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Towards Inexpensive and Highly Conductive Anion-Exchange Membranes: WPI-MANA - My Blog\" \/>\n<meta property=\"og:description\" content=\"TSUKUBA, Japan, Feb. 15, 2023 \/PRNewswire\/ — An international research team at the International Center for Materials Nanoarchitectonics (WPI-MANA) has worked to improve the ionic conductivity of anion-exchange membranes (AEMs) made from layered double hydroxides (LDHs), laying the foundation for their use in many electrochemical applications. 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