{"id":1311,"date":"2025-02-03T13:11:07","date_gmt":"2025-02-03T13:11:07","guid":{"rendered":"https:\/\/qapasity.com\/?p=1311"},"modified":"2025-02-03T13:30:06","modified_gmt":"2025-02-03T13:30:06","slug":"what-are-semi-solid-state-batteries","status":"publish","type":"post","link":"https:\/\/qapasity.com\/en\/what-are-semi-solid-state-batteries\/","title":{"rendered":"What are semi-solid state batteries?"},"content":{"rendered":"\n<p>Before diving into what a semi-solid state battery is, let&#8217;s first take a look at how a traditional lithium-ion battery works. Fundamentally, such a battery consists of four key components: the cathode (positive side), the anode (negative side), the electrolyte (the conductor between positive and negative), and a separator.A LiFePO4 battery, also known as LFP or lithium iron phosphate, contains the following materials:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Cathode:<\/strong> Made of lithium iron phosphate (LiFePO4). This material gives the battery its name and is known for its stability and safety.<\/li>\n\n\n\n<li><strong>Anode:<\/strong> Typically made of graphite, which provides a storage area for lithium ions during charging cycles.<\/li>\n\n\n\n<li><strong>Electrolyte:<\/strong> Consists of organic solvents with a lithium salt, such as lithium hexafluorophosphate (LiPF6), enabling ion transport between the cathode and anode.<\/li>\n\n\n\n<li><strong>Separator:<\/strong> A permeable membrane that prevents direct electrical contact between the cathode and anode while allowing ions to pass through the electrolyte. This ensures electrons flow through the external circuit.<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"696\" src=\"https:\/\/qapasity.com\/wp-content\/uploads\/2025\/02\/unnamed-1024x696.avif\" alt=\"\" class=\"wp-image-1312\" srcset=\"https:\/\/qapasity.com\/wp-content\/uploads\/2025\/02\/unnamed-1024x696.avif 1024w, https:\/\/qapasity.com\/wp-content\/uploads\/2025\/02\/unnamed-300x204.avif 300w, https:\/\/qapasity.com\/wp-content\/uploads\/2025\/02\/unnamed-768x522.avif 768w, https:\/\/qapasity.com\/wp-content\/uploads\/2025\/02\/unnamed-18x12.avif 18w, https:\/\/qapasity.com\/wp-content\/uploads\/2025\/02\/unnamed-png.avif 1486w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>(Image source: Dave Borlace &#8211; Just Have a Think)<\/p>\n\n\n\n<p>Semi-solid state technology combines elements from both traditional and solid-state batteries. This technology uses a partially solid electrolyte, offering improved safety compared to liquid electrolytes. Semi-solid state batteries have higher energy density and perform better in extreme temperatures. Looking at the components of semi-solid state batteries, cathode, anode, and electrolyte (but no separate separator), we can highlight the following:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Cathode:<\/strong> Still made of lithium iron phosphate (LiFePO4) but can be integrated with a solid electrolyte to enhance stability and safety.<\/li>\n\n\n\n<li><strong>Anode:<\/strong> Typically still uses graphite, though there is potential for other materials that can integrate with solid electrolytes to increase energy density and cycle life.<\/li>\n\n\n\n<li><strong>Electrolyte:<\/strong> Replaces the liquid electrolyte with a solid or semi-solid one, which may be a polymer or another solid substance. This reduces leakage risks and improves safety.<\/li>\n\n\n\n<li><strong>Separator:<\/strong> In semi-solid state batteries, the separator may be part of the solid electrolyte, reducing the need for a separate membrane structure and enabling a more compact, safer design.<\/li>\n<\/ul>\n\n\n\n<p>These advancements aim to enhance safety, reduce fire risks, and improve battery lifespan and energy density. By using a lower volume of semi-solid electrolyte, there is less flammable material and a reduced risk of short circuits due to the higher viscosity (thicker consistency) of the electrolyte.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"823\" src=\"https:\/\/qapasity.com\/wp-content\/uploads\/2025\/02\/2-1024x823.avif\" alt=\"\" class=\"wp-image-1313\" srcset=\"https:\/\/qapasity.com\/wp-content\/uploads\/2025\/02\/2-1024x823.avif 1024w, https:\/\/qapasity.com\/wp-content\/uploads\/2025\/02\/2-300x241.avif 300w, https:\/\/qapasity.com\/wp-content\/uploads\/2025\/02\/2-768x617.avif 768w, https:\/\/qapasity.com\/wp-content\/uploads\/2025\/02\/2-15x12.avif 15w, https:\/\/qapasity.com\/wp-content\/uploads\/2025\/02\/2-png.avif 1343w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>(Image source: Dave Borlace &#8211; Just Have a Think)<\/p>\n\n\n\n<p>Want to learn more about semi-solid state technology? Check out a video by YouTuber Dave Borlace on his channel, \u201cJust Have a Think.\u201d In the video, he gives a detailed overview of how the technology works, sharing both its advantages and challenges: <em>Would you be OK with a Semi Solid State?<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Before diving into what a semi-solid state battery is, let&#8217;s first take a look at how a traditional lithium-ion battery works. Fundamentally, such a battery consists of four key components: the cathode (positive side), the anode (negative side), the electrolyte (the conductor between positive and negative), and a separator.A LiFePO4 battery, also known as LFP [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":1194,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-1311","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-arctic-series"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.3 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>What are semi-solid state batteries? - Qapasity<\/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:\/\/qapasity.com\/en\/what-are-semi-solid-state-batteries\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What are semi-solid state batteries?\" \/>\n<meta property=\"og:description\" content=\"Before diving into what a semi-solid state battery is, let&#8217;s first take a look at how a traditional lithium-ion battery works. Fundamentally, such a battery consists of four key components: the cathode (positive side), the anode (negative side), the electrolyte (the conductor between positive and negative), and a separator.A LiFePO4 battery, also known as LFP [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/qapasity.com\/en\/what-are-semi-solid-state-batteries\/\" \/>\n<meta property=\"og:site_name\" content=\"Qapasity\" \/>\n<meta property=\"article:published_time\" content=\"2025-02-03T13:11:07+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-02-03T13:30:06+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/qapasity.com\/wp-content\/uploads\/2025\/01\/2_white-scaled.avif\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1707\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Adam Lithner\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Adam Lithner\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/qapasity.com\\\/what-are-semi-solid-state-batteries\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/qapasity.com\\\/what-are-semi-solid-state-batteries\\\/\"},\"author\":{\"name\":\"Adam Lithner\",\"@id\":\"https:\\\/\\\/qapasity.com\\\/#\\\/schema\\\/person\\\/2dd1894eec1b42c92e1e282604176421\"},\"headline\":\"What are semi-solid state batteries?\",\"datePublished\":\"2025-02-03T13:11:07+00:00\",\"dateModified\":\"2025-02-03T13:30:06+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/qapasity.com\\\/what-are-semi-solid-state-batteries\\\/\"},\"wordCount\":436,\"publisher\":{\"@id\":\"https:\\\/\\\/qapasity.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/qapasity.com\\\/what-are-semi-solid-state-batteries\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/qapasity.com\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/2_white-scaled.avif\",\"articleSection\":[\"Arctic Series\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/qapasity.com\\\/what-are-semi-solid-state-batteries\\\/\",\"url\":\"https:\\\/\\\/qapasity.com\\\/what-are-semi-solid-state-batteries\\\/\",\"name\":\"What are semi-solid state batteries? 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