{"id":6421,"date":"2019-05-29T09:08:36","date_gmt":"2019-05-29T01:08:36","guid":{"rendered":"https:\/\/battery9999.com\/%e7%be%8e%e7%a7%91%e5%ad%b8%e5%ae%b6%e7%82%ba%e9%99%b0%e6%a5%b5%e9%96%8b%e7%99%bc%e4%bf%9d%e8%ad%b7%e5%b1%a4%ef%bc%8c%e9%8b%b0%e9%9b%bb%e6%b1%a0%e5%ae%89%e5%85%a8%e6%80%a7%e5%86%8d%e5%8d%87%e7%b4%9a\/"},"modified":"2019-05-29T09:13:30","modified_gmt":"2019-05-29T01:13:30","slug":"%e7%be%8e%e7%a7%91%e5%ad%b8%e5%ae%b6%e7%82%ba%e9%99%b0%e6%a5%b5%e9%96%8b%e7%99%bc%e4%bf%9d%e8%ad%b7%e5%b1%a4%ef%bc%8c%e9%8b%b0%e9%9b%bb%e6%b1%a0%e5%ae%89%e5%85%a8%e6%80%a7%e5%86%8d%e5%8d%87%e7%b4%9a","status":"publish","type":"post","link":"https:\/\/battery9999.com\/en\/%e7%be%8e%e7%a7%91%e5%ad%b8%e5%ae%b6%e7%82%ba%e9%99%b0%e6%a5%b5%e9%96%8b%e7%99%bc%e4%bf%9d%e8%ad%b7%e5%b1%a4%ef%bc%8c%e9%8b%b0%e9%9b%bb%e6%b1%a0%e5%ae%89%e5%85%a8%e6%80%a7%e5%86%8d%e5%8d%87%e7%b4%9a\/","title":{"rendered":"New Argonne coating could have big implications for lithium batteries"},"content":{"rendered":"

ByJared Sagoff

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Building a better lithium-ion battery involves addressing a myriad of factors simultaneously, from keeping the battery\u2019s cathode electrically and ionically conductive to making sure that the battery stays safe after many cycles.<\/p>\n

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In a new discovery, scientists at the U.S. Department of Energy\u2019s (DOE<\/span>) Argonne National Laboratory have developed a new cathode coating by using an oxidative chemical vapor deposition technique that can help solve these and several other potential issues with lithium-ion batteries all in one stroke.<\/p>\n

\u201c<\/span>The coating we\u2019ve discovered really hits five or six birds with one stone.\u201d Khalil Amine, Argonne distinguished fellow and battery scientist.<\/p>\n

In the research, Amine and his fellow researchers took particles of Argonne\u2019s pioneering nickel-manganese-cobalt (NMC<\/span>) cathode material and encapsulated them with a sulfur-containing polymer called PEDOT<\/span>. This polymer provides the cathode a layer of protection from the battery\u2019s electrolyte as the battery charges and discharges.<\/p>\n

Unlike conventional coatings, which only protect the exterior surface of the micron-sized cathode particles and leave the interior vulnerable to cracking, the PEDOT<\/span> coating had the ability to penetrate to the cathode particle\u2019s interior, adding an additional layer of shielding.<\/p>\n

In addition, although PEDOT<\/span> prevents the chemical interaction between the battery and the electrolyte, it does allow for the necessary transport of lithium ions and electrons that the battery requires in order to function.<\/p>\n

\u201c<\/span>This coating is essentially friendly to all of the processes and chemistry that makes the battery work and unfriendly to all of the potential reactions that would cause the battery to degrade or malfunction,\u201d said Argonne chemist Guiliang Xu, the first author of the research.<\/p>\n

The coating also largely prevents another reaction that causes the battery\u2019s cathode to deactivate. In this reaction, the cathode material converts to another form called spinel. \u200b\u201c<\/span>The combination of almost no spinel formation with its other properties makes this coating a very exciting material,\u201d Amine said.<\/p>\n

The PEDOT<\/span> material also demonstrated the ability to prevent oxygen release, a major factor for the degradation of NMC<\/span> cathode materials at high voltage. \u200b\u201c<\/span>This PEDOT<\/span> coating was also found to be able to suppress oxygen release during charging, which leads to better structural stability and also improves safety,\u201d Amine said.<\/p>\n

Amine indicated that battery scientists could likely scale up the coating for use in nickel-rich NMC-containing batteries. \u200b\u201c<\/span>This polymer has been around for a while, but we were still surprised to see that it has all of the encouraging effects that it does,\u201d he said.<\/p>\n

With the coating applied, the researchers believe that the NMC-containing batteries could either run at higher voltages \u2014 thus increasing their energy output \u2014 or have longer lifetimes, or both.<\/p>\n

\u201c<\/span>The coating we\u2019ve discovered really hits five or six birds with one stone,\u201d said Argonne distinguished fellow and battery scientist Khalil Amine, who led the research.<\/p><\/blockquote>\n

To perform the research, the scientists relied on two DOE<\/span> Office of Science User Facilities located at Argonne: the Advanced Photon Source (APS<\/span>) and the Center for Nanoscale Materials (CNM<\/span>). In situ high-energy X-ray diffraction measurements were taken at beamline 11<\/span>-ID-C<\/span> of the APS<\/span>, and focused ion beam lithography and transmission electron microscopy were performed at the CNM<\/span>.<\/p>\n

A paper based on the study, \u200b\u201c<\/span>Building ultra-conformal protective layers on both secondary and primary particles of layered lithium transition metal oxide cathodes,\u201d appeared in the May 13<\/span> online edition of <\/a>Nature Energy<\/a>.<\/em> Other Argonne authors included Yuzi Liu, Xiang Liu, Han Gao, Minghao Zhuang, Yang Ren and Zonghai Chen. Researchers from Drexel University, Indiana University-Purdue University Indianapolis, and four Chinese universities also collaborated.<\/p>\n

The research was funded by DOE<\/span>\u2019s Office of Science, Office of Basic Energy Sciences and the Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Office.<\/p>\n

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The Office of Energy Efficiency and Renewable Energy<\/strong><\/a> supports early-stage research and development of energy efficiency and renewable energy technologies to strengthen U.S. economic growth, energy security, and environmental quality.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Argonne National Laboratory<\/strong> seeks solutions to pressing national problems in science and technology. The nation\u2019s first national laboratory, Argonne conducts leading-edge basic and applied scientific research in virtually every scientific discipline. Argonne researchers work closely with researchers from hundreds of companies, universities, and federal, state and municipal agencies to help them solve their specific problems, advance America\u2019s scientific leadership and prepare the nation for a better future. With employees from more than 60<\/span> nations, Argonne is managed by UChicago Argonne, LLC<\/span><\/a> for the U.S. Department of Energy\u2019s Office of Science<\/a>.<\/p>\n

The U.S. Department of Energy\u2019s Office of Science<\/strong> is the single largest supporter of basic research in the physical sciences in the United States and is working to address some of the most pressing challenges of our time. For more information, visit https:\/\/\u200bener\u200bgy\u200b.gov\/\u200bs\u200bc\u200bience<\/a>.<\/p>\n

Source:New coating could have big implications for lithium batteries<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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 <\/p>\n","protected":false},"excerpt":{"rendered":"

ByJared Sagoff May 14, 2019<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[113,91],"tags":[],"class_list":["post-6421","post","type-post","status-publish","format-standard","hentry","category-industrial-news","category-news-center"],"yoast_head":"\nNew Argonne coating could have big implications for lithium batteries - \u660c\u8467\u80a1\u4efd\u6709\u9650\u516c\u53f8<\/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:\/\/battery9999.com\/en\/\u7f8e\u79d1\u5b78\u5bb6\u70ba\u9670\u6975\u958b\u767c\u4fdd\u8b77\u5c64\uff0c\u92f0\u96fb\u6c60\u5b89\u5168\u6027\u518d\u5347\u7d1a\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"New Argonne coating could have big implications for lithium batteries - 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