{"id":21163,"date":"2025-05-06T08:31:54","date_gmt":"2025-05-05T23:31:54","guid":{"rendered":"https:\/\/askinno.com\/global\/?p=21163"},"modified":"2025-10-26T14:20:45","modified_gmt":"2025-10-26T05:20:45","slug":"21163","status":"publish","type":"post","link":"https:\/\/askinno.com\/global\/archives\/21163","title":{"rendered":"SK On Presents New Research Advances in Solid-state Batteries"},"content":{"rendered":"

\u25a0 Uncovers method to enhance long cycle life of sulfide-based all-solid-state lithium metal batteries<\/span><\/strong><\/p>\n

\u25a0 Clarifies cathode degradation mechanism; unveils link between gel polymer electrolyte thermal curing time and battery life<\/span><\/strong><\/p>\n

 <\/p>\n

SK On, a leading global battery and trading company, presented today its latest findings on solid-state battery research in collaboration with academic partners, highlighting its commitment to advancing next-generation battery solutions. <\/span><\/p>\n

SK On, part of South Korea\u2019s SK Group, said that its research, conducted in collaboration with Dr. Dong-Won Kim\u2019s group at Hanyang University in Seoul, discovered a method to improve the cycle life of sulfide-based all-solid-state lithium metal batteries (ASSLMBs). <\/span><\/p>\n

The study, published last month in ACS Energy Letters<\/em>, a renowned journal in the field of energy and chemistry, introduces a method for forming a protective layer on the lithium metal anode surface to enhance battery safety and extend its lifespan. The team also filed patent applications for its key findings both domestically and internationally. <\/span><\/p>\n

Lithium metal is considered a next-generation anode material due to its high capacity \u2013 around 10 times greater than that of graphite \u2013 and its low electrochemical potential which enables enhanced energy density and high-performance power. <\/span><\/p>\n

However, lithium metal is also known for challenges such as its high reactivity with air, which lead to the uneven formation of inorganic compounds on its surface. This layer hinders the movement of lithium ions, reducing both charging and discharging efficiency, while promoting dendrite* formation which further threatens battery life. Also, all-solid-state batteries using lithium metal anodes have generally demonstrated limited charge-discharge cycles, often around 100.<\/span>
\n<\/span>(*)Dendrites: a phenomenon in which lithium grows unevenly in tree-like structure on the anode during charging <\/span><\/em><\/span><\/em><\/p>\n

To address the issue of limited lifespan, the research team removed the resistive surface layer by immersing the lithium metal anode in a specially formulated solution**. This approach resulted in the formation of a protective layer featuring high ionic conductivity, attributed to lithium nitrate, and enhanced mechanical strength due to lithium oxide.<\/span>
\n<\/span>(**)Solution containing nitromethane, dimethoxyethene, and lithium nitrate.<\/span><\/em><\/em><\/span><\/p>\n

SK On said this method ensured interfacial stability, with experimental results showing that the surface-modified lithium metal anode enabled stable cycling for over 300 charge-discharge cycles at room temperature, tripling the cycle life compared to conventional lithium metal all-solid-state batteries.<\/span><\/p>\n

In collaboration with Dr. Jong Hyeok Park of Yonsei University, SK On announced another significant achievement, uncovering the relationship between battery life and the thermal curing time of gel polymer electrolytes (GPEs). Their study was abolished in the prestigious journal Angewandte Chemie<\/em> in February.<\/span><\/p>\n

According to the study, longer thermal curing times for the GPEs resulted in better retention of battery performance. The study showed that batteries using electrolytes with 60 minutes of thermal curing showed a 9.1% decrease in discharge capacity, while those with just 20 minutes of thermal curing experienced a 34% decrease. <\/span><\/p>\n

It suggests that shorter thermal curing time leads to the easy decomposition of the cathode protective layer, which in turn reduces capacity and ultimately shortens battery lifespan.<\/span><\/p>\n

Also in the study, the team applied density functional theory*** calculations to identify the cause and mechanism of cathode performance degradation and investigate residual monomer-induced side reactions during the initial charging stage. SK On said the findings from this study is expected to contribute to improving the lifespan of polymer-oxide composite-based batteries. <\/span>
\n<\/span>(***)Density functional theory (DFT): a quantum mechanical modeling approach used to calculate how electrons are arranged in materials and predict their energy states. <\/span><\/em><\/em><\/span><\/p>\n

\u201cThese achievements are the result of SK On\u2019s continued R&D efforts and technological prowess, enabled through collaboration with academia,\u201d said Kisoo Park, Head of R&D at SK On. \u201cThey will serve as a key foundation for overcoming the technological challenges of solid-state batteries.\u201d<\/span><\/p>\n

Meanwhile, SK On is developing two types of ASSBs: polymer-oxide composite and sulfide-based, with commercialization targeted for 2028 and 2030, respectively. <\/span><\/p>\n

*Click here to check the studies:<\/strong><\/span>
\n– Surface-Modified Lithium Enabling High-performance All-Solid-State Lithium Metal Batteries <\/a><\/span><\/span><\/span>
\n– Residual Monomer-Induced Side Reactions in Gel Polymer Electrolytes: Unveiled High-Ni Cathode Failure in Lithium Batteries<\/a><\/span><\/span><\/span><\/p>\n

[Photo]<\/strong><\/span>\u00a0This captured image shows a research paper by SK On and Hanyang University published in the international academic journal ACS Energy Letters, highlighting a method forming a protective layer for lithium metal anodes. <\/span><\/p>\n

\"\"<\/p>\n

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

\u25a0 Uncovers method to enhance long cycle life of sulfide-based all-solid-state lithium metal batteries \u25a0 Clarifies cathode degradation mechanism; unveils link between gel polymer electrolyte thermal curing time and battery life   SK On, a leading global battery and trading company, presented today its latest findings on solid-state battery research in collaboration with academic partners, … Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":20102,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1914,1915],"tags":[1863,997,1865,1918,1864,648],"class_list":["post-21163","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-presspress","category-press-releases","tag-acs-energy-letters","tag-all-solid-state-battery","tag-angewandte-chemie","tag-batteriesmaterials","tag-lithium-metal","tag-sk-on"],"acf":[],"_links":{"self":[{"href":"https:\/\/askinno.com\/global\/wp-json\/wp\/v2\/posts\/21163","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/askinno.com\/global\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/askinno.com\/global\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/askinno.com\/global\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/askinno.com\/global\/wp-json\/wp\/v2\/comments?post=21163"}],"version-history":[{"count":16,"href":"https:\/\/askinno.com\/global\/wp-json\/wp\/v2\/posts\/21163\/revisions"}],"predecessor-version":[{"id":153182,"href":"https:\/\/askinno.com\/global\/wp-json\/wp\/v2\/posts\/21163\/revisions\/153182"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/askinno.com\/global\/wp-json\/wp\/v2\/media\/20102"}],"wp:attachment":[{"href":"https:\/\/askinno.com\/global\/wp-json\/wp\/v2\/media?parent=21163"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/askinno.com\/global\/wp-json\/wp\/v2\/categories?post=21163"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/askinno.com\/global\/wp-json\/wp\/v2\/tags?post=21163"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}