{"id":4056,"date":"2025-03-28T16:31:37","date_gmt":"2025-03-28T08:31:37","guid":{"rendered":"https:\/\/www.powdergrindingmill.com\/?p=4056"},"modified":"2025-04-10T13:59:04","modified_gmt":"2025-04-10T05:59:04","slug":"the-golden-code-of-silicon-based-anode-porous-carbon","status":"publish","type":"post","link":"https:\/\/www.powdergrindingmill.com\/de\/the-golden-code-of-silicon-based-anode-porous-carbon\/","title":{"rendered":"Der \u201eGoldene Code\u201c der siliziumbasierten Anoden-por\u00f6sen Kohlenstoff"},"content":{"rendered":"<p>Im Bereich der Lithium-Ionen-Batterien werden silikonbasierte Anodenmaterialien aufgrund ihrer Kapazit\u00e4t von 4200mAh\/g als \u201eHoffnung der n\u00e4chsten Generation hochenergetischer Batterien\u201c bezeichnet.<br>Allerdings wirkt sich eine schwere Volumenexpansion w\u00e4hrend des Ladens und Entladens (\u00fcber 300%) wie ein \u201eFluch\u201c aus. Dies f\u00fchrt zu Elektrodenzertr\u00fcmmerung und schnellem Kapazit\u00e4tsverlust, was die Kommerzialisierung erheblich behindert. Um dieses Deadlock zu durchbrechen, konzentrieren sich Wissenschaftler auf die Vapor-Deposited-Silicon-Carbon-Anodentechnologie. Das zentrale Tr\u00e4germaterial, <a href=\"https:\/\/www.powdergrindingmill.com\/de\/dry-grinding\/fluidized-bed-opposed-air-jet-mill\/\">Kohlenstoff<\/a>, spielt eine Schl\u00fcsselrolle bei diesem Durchbruch.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"780\" height=\"530\" src=\"https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/03\/lithium-ion-charging.webp\" alt=\"Lithium-Ionen-Ladung\" class=\"wp-image-4057\" srcset=\"https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/03\/lithium-ion-charging.webp 780w, https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/03\/lithium-ion-charging-300x204.webp 300w, https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/03\/lithium-ion-charging-768x522.webp 768w\" sizes=\"(max-width: 780px) 100vw, 780px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Por\u00f6ses Kohlenstoff: Warum ist es der \u201eGoldpartner\u201c der Silicon-Carbon-Anode?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u201eFlexibler Raum\u201c l\u00f6st die Expansionskrise<\/h3>\n\n\n\n<p>Die Volumenexpansion von Silizium ist wie Gas, das in einem versiegelten Beh\u00e4lter eingeschlossen ist. Ohne Pufferraum ist ein struktureller Zusammenbruch unvermeidlich. Die 3D-vernetzten Poren des por\u00f6sen Kohlenstoffs wirken als ein \u201eflexibler Zufluchtsort\u201c f\u00fcr Siliziumpartikel. Diese Poren bieten physischen Raum f\u00fcr die Siliziumexpansion und verteilen Stress durch elastische Verformung. Dies reduziert das Risiko des Partikelbruchs erheblich. Studien zeigen, dass bei einer Porosit\u00e4t von <a href=\"https:\/\/www.powdergrindingmill.com\/de\/dry-grinding\/ball-mill-and-air-classifier-production-system\/\">Kohlenstoff<\/a> die Lebensdauer des Silizium-Anods um mehr als das Dreifache steigen kann.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Leitf\u00e4hige \u201eAutobahn\u201c durchbricht den \u00dcbertragungsengpass<\/h3>\n\n\n\n<p>Silizium hat eine \u00e4u\u00dferst schlechte Leitf\u00e4higkeit (nur 1\u00d710\u207b\u00b3 S\/cm). Im Gegensatz dazu hat por\u00f6ser Kohlenstoff eine Leitf\u00e4higkeit von 100\u20131000 S\/cm. Durch Vapor-Deposition wird Silizium gleichm\u00e4\u00dfig auf seiner Oberfl\u00e4che beschichtet. Das Kohlenstoffger\u00fcst wirkt als eine \u201eelektronische Autobahn\u201c, die einen schnellen Elektronentransport zwischen aktivem Material und Stromkollektor erm\u00f6glicht. Experimentelle Daten zeigen, dass der Ladungstransferwiderstand von por\u00f6sen Kohlenstoff-basierten Silizium-Anoden im Vergleich zu reinem Silizium um 90% reduziert werden kann.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ionentransport-\u201egr\u00fcner Kanal\u201c verbessert die Ratenleistung<\/h3>\n\n\n\n<p>Die hierarchische Porenstruktur des por\u00f6sen Kohlenstoffs (Mikroporen + Mesoporen + Makroporen) bildet ein abgestuftes Permeationsnetzwerk.<br>Mikroporen (&lt;2 nm) bieten eine hohe Oberfl\u00e4che f\u00fcr die Lithium-Ionen-Adsorption.<br>Mesoporen (2\u201350 nm) dienen als die Hauptkan\u00e4le f\u00fcr den Ionentransport.<br>Makroporen (&gt;50 nm) fungieren als Elektrolytreservoirs.<br>Dieses \u201eDrei-Poren-Synergie\u201c erm\u00f6glicht es der Elektrode, auch bei einer hohen 10C-Rate eine Kapazit\u00e4t von 80% zu behalten.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u201eNanok\u00e4fig\u201c-Effekt hemmt das unkontrollierte Wachstum der SEI-Film<\/h3>\n\n\n\n<p>Siliziumoberfl\u00e4chenrisse bilden wiederholt eine feste Elektrolyt-Interphase (SEI)-Schicht, was zu kontinuierlichem Verlust aktiven Lithiums f\u00fchrt. Por\u00f6ser Kohlenstoff begrenzt physisch die Siliziumpartikel innerhalb seiner Poren und schafft eine \u201eNanok\u00e4fig\u201c-Struktur. Dieses Design beschr\u00e4nkt das Wachstum der SEI-Film strikt auf die Oberfl\u00e4che des Kohlenstoffger\u00fcsts. Eine Studie der Tsinghua-Universit\u00e4t ergab, dass dieser Ansatz die Anfangseffizienz von Silizium-Anoden von 65% auf 89% erh\u00f6ht.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sechs \u201eharte Kernindikatoren\u201c <\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Porenstruktur<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Spezifische Oberfl\u00e4che: \u22651500 m\u00b2\/g (bietet ausreichend Silizium-Ladungsstellen) <\/li>\n\n\n\n<li>Porosit\u00e4t: \uff1e80% (Sicherstellung des Expansionspuffers) <\/li>\n\n\n\n<li>Porengr\u00f6\u00dfenverteilung: Mikroporen: Mesoporen: Makroporen \u2248 1:4:5 (unter Ber\u00fccksichtigung sowohl des Ionentransports als auch der mechanischen Festigkeit)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Leitf\u00e4hige Eigenschaften<\/h3>\n\n\n\n<p>Graphitierter por\u00f6ser Kohlenstoff muss eine Leitf\u00e4higkeit &gt;500 S\/cm aufweisen und ein kontinuierliches sp\u00b2-hybridisiertes Kohlenstoffnetz bilden. Ein Forschungsteam verwendete laserinduzierte Graphitisierung, um die Leitf\u00e4higkeit von por\u00f6sen Kohlenstoffen auf 1200 S\/cm zu erh\u00f6hen. Dies erm\u00f6glichte es der Silizium-Anode, eine Kapazit\u00e4t von 92% bei einem Strom von 5A\/g zu behalten.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Mechanische Festigkeit<\/h3>\n\n\n\n<p>Der Kompressionsmodul muss 10 MPa \u00fcbersteigen, um den GPa-\u00e4hnlichen Stress durch die Expansion von Silizium auszuhalten.<br>Inspiriert von Biomimikry entwickelte ein Forschungsteam eine honigwabenartige por\u00f6se Kohlenstoffstruktur. Ihre Druckfestigkeit erreicht 25 MPa, wobei die strukturelle Integrit\u00e4t nach 500 Zyklen \u00fcber 95% erhalten bleibt.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Oberfl\u00e4chenchemie<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Funktionelle Gruppenregulierung:<\/strong> Das Einbringen von sauerstoffhaltigen Gruppen (-COOH, -OH) kann die Bindung an der Silizium-Kohlenstoff-Schnittstelle verbessern. Der Gehalt muss jedoch unter 5% gehalten werden, um Nebenreaktionen zu vermeiden.<\/li>\n\n\n\n<li><strong>Dotierungsmodifikation: <\/strong>Stickstoffdotierung (3-5 at%) verbessert die Transportkinetik der Lithium-Ionen an der Schnittstelle. Phosphordotierung erh\u00f6ht die strukturelle Stabilit\u00e4t.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Thermische Stabilit\u00e4t<\/h3>\n\n\n\n<p>Die Struktur muss bei Temperaturen unter 300\u00b0C stabil bleiben (mit einem Massenverlust &lt;1%), um thermisches Durchgehen der Batterie zu verhindern. Die Verwendung von Siliziumkarbid-Beschichtungstechnologie erh\u00f6ht die initiale Zersetzungstemperatur von por\u00f6sem Kohlenstoff von 420\u00b0C auf 580\u00b0C.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Kosten<\/h3>\n\n\n\n<p>Unter der Voraussetzung, die Leistung zu gew\u00e4hrleisten, muss die Kosten f\u00fcr por\u00f6sen Kohlenstoff innerhalb eines vern\u00fcnftigen Rahmens kontrolliert werden, um gro\u00dftechnische kommerzielle Anwendungen zu erm\u00f6glichen.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Herstellung von por\u00f6sem Kohlenstoff: vier Haupttechnologierouten<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Vorlagenmethode: eine pr\u00e4zise kontrollierte \u201eNano-Architektur\u201c<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hartvorlage: Verwendung von SiO\u2082-Nanokugeln als Vorlagen, karbonisiert und mit HF ge\u00e4tzt, kann por\u00f6ser Kohlenstoff mit einheitlicher Porengr\u00f6\u00dfe (\u00b12 nm) hergestellt werden. Allerdings besteht ein Risiko der Umweltverschmutzung.<\/li>\n\n\n\n<li>Weiche Vorlage: Verwendung amphiphiler Blockcopolymere wie F127, die durch Selbstassemblierung geordnete Mesoporen bilden, was sie f\u00fcr die gro\u00dftechnische Produktion geeigneter macht.<\/li>\n<\/ul>\n\n\n\n<p>  <strong> 2. Aktivierungsmethode: ein einfacher und grober \u201eLochmacher-Meister\u201c<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>KOH-Aktivierungsmethode:<\/strong> Bei 800\u00b0C reagiert KOH mit Kohlenstoff (6KOH + 2C \u2192 2K + 3H\u2082 + 2K\u2082CO\u2083), um super-por\u00f6sen Kohlenstoff mit einer spezifischen Oberfl\u00e4che &gt;3000 m\u00b2\/g zu erzeugen, was jedoch zu einem \u00dcberschuss an Mikroporen f\u00fchren kann.<\/li>\n\n\n\n<li><strong>CO\u2082-physikalische Aktivierung: <\/strong>Umweltfreundlicher, aber die spezifische Oberfl\u00e4che liegt in der Regel bei &lt;1000 m\u00b2\/g.<\/li>\n<\/ul>\n\n\n\n<p>  <strong>3. Biomasse-Derivat-Methode: Ein gr\u00fcnes und nachhaltiges \u201eGeschenk der Natur\u201c<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Biomasse wie Kokosnussschalen und Bambus durchlaufen eine Vor-Karbonisierung (300-500\u00b0C) und Aktivierung (KOH, 700\u00b0C), um por\u00f6sen Kohlenstoff mit einem hohen Mesoporengehalt (&gt;60%) zu erhalten.<\/li>\n<\/ul>\n\n\n\n<p>  <strong>4. 3D-Drucktechnologie: die \u201eFabrik der Zukunft\u201c f\u00fcr ma\u00dfgeschneiderte Strukturen<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Direktes Schreiben (DIW) 3D-Druck in Kombination mit Gefriertrocknung kann verwendet werden, um por\u00f6sen Kohlenstoff mit einer Gradientenporenstruktur herzustellen. Es beh\u00e4lt eine ausgezeichnete Leistung bei, wenn die Siliziumladung gr\u00f6\u00dfer als 5 mg\/cm\u00b2 ist, und gilt als die n\u00e4chste Generation der Mainstream-Technologie.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Industrieller Durchbruch: ein kritischer Sprung vom Labor zur Massenproduktion<\/h2>\n\n\n\n<p>Derzeit befinden sich por\u00f6se Kohlenstoff-basierte Silizium-Kohlenstoff-Anoden in der Industrialisierungsphase:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Teslas 4680-Batterie verwendet por\u00f6se, kohlenstoffbeschichtete Siliziumoxid-Anoden und erreicht eine Monomeren-Energiedichte von \u00fcber 300 Wh\/kg.<\/li>\n\n\n\n<li>CATLs \u201eQilin-Batterie\u201c nutzt ein mehrstufiges Poren-Kohlenstoff-Design und verl\u00e4ngert die Zykluslebensdauer der Silizium-Anode auf \u00fcber 1200 Zyklen.<\/li>\n<\/ul>\n\n\n\n<p><br>Herausforderungen und Chancen bestehen nebeneinander: Das Gleichgewicht zwischen hoher spezifischer Oberfl\u00e4che und niedriger Tapped Density (derzeit &lt;0,3 g\/cm\u00b3) sowie die Entwicklung trockener Elektrodenprozesse sind noch technologische H\u00fcrden, die \u00fcberwunden werden m\u00fcssen.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"690\" height=\"388\" src=\"https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/03\/silicon-based-anode-battery.webp\" alt=\"Silizium-basierte Anodenbatterie\" class=\"wp-image-4058\" srcset=\"https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/03\/silicon-based-anode-battery.webp 690w, https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/03\/silicon-based-anode-battery-300x169.webp 300w\" sizes=\"(max-width: 690px) 100vw, 690px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Fazit: Por\u00f6ser Kohlenstoff \u2013 die \u201eGoldene \u00c4ra\u201c der Silizium-basierten Anoden er\u00f6ffnet<\/h2>\n\n\n\n<p>Von den innovativen Funken im Labor bis zur schnellen Industrialisierung schreibt por\u00f6ser Kohlenstoff mit seinen einzigartigen Struktureigenschaften die Kommerzialisierungsgeschichte der siliziumbasierten Anoden neu.<br>Mit kontinuierlichen Fortschritten in den Herstellungstechnologien und Kostensenkungen wird erwartet, dass der Markt f\u00fcr por\u00f6sen Kohlenstoff-basierten Silizium-Kohlenstoff-Anoden bis 2025 1 Billion Euro \u00fcbersteigen wird.<br>Diese \u201eMaterialrevolution\u201c unter F\u00fchrung von por\u00f6sem Kohlenstoff k\u00f6nnte der Schl\u00fcssel sein, um das Zeitalter der Hochenergiedichte-Batterien einzul\u00e4uten.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Epic-Pulver<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1000\" height=\"1000\" src=\"https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/03\/Air-Jet-Mill-1.webp\" alt=\"Luft-D\u00fcsen-M\u00fchle\" class=\"wp-image-4035\" srcset=\"https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/03\/Air-Jet-Mill-1.webp 1000w, https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/03\/Air-Jet-Mill-1-300x300.webp 300w, https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/03\/Air-Jet-Mill-1-150x150.webp 150w, https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/03\/Air-Jet-Mill-1-768x768.webp 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<p>Die Herstellung von por\u00f6sem Kohlenstoff ist untrennbar mit ultrafeinem Mahlen verbunden. <a href=\"https:\/\/www.powdergrindingmill.com\/de\/\">Epic Pulver<\/a>Epic Pulver, \u00fcber 20 Jahre Berufserfahrung in der Ultrafeinpulverindustrie. Aktive F\u00f6rderung der zuk\u00fcnftigen Entwicklung von Ultrafeinpulvern, mit Fokus auf Zerkleinerung, Mahlen, Klassifizierung und Modifikation von Ultrafeinpulvern. Kontaktieren Sie uns f\u00fcr eine kostenlose Beratung und ma\u00dfgeschneiderte L\u00f6sungen! Unser Expertenteam ist bestrebt, hochwertige Produkte und Dienstleistungen anzubieten, um den Wert Ihrer Pulververarbeitung zu maximieren. Epic Pulver \u2013 Ihr vertrauensw\u00fcrdiger Experte f\u00fcr Pulververarbeitung! <\/p>\n\n\n\n<div class=\"wp-block-contact-form-7-contact-form-selector\">\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f8-o1\" lang=\"zh-CN\" dir=\"ltr\" data-wpcf7-id=\"8\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/de\/wp-json\/wp\/v2\/posts\/4056#wpcf7-f8-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"Nachrichtformular\" novalidate=\"novalidate\" data-status=\"init\" data-trp-original-action=\"\/de\/wp-json\/wp\/v2\/posts\/4056#wpcf7-f8-o1\">\n<fieldset class=\"hidden-fields-container\"><input type=\"hidden\" name=\"_wpcf7\" value=\"8\" \/><input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.1.3\" \/><input type=\"hidden\" name=\"_wpcf7_locale\" value=\"zh_CN\" \/><input type=\"hidden\" name=\"_wpcf7_unit_tag\" value=\"wpcf7-f8-o1\" \/><input type=\"hidden\" name=\"_wpcf7_container_post\" 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Anodenmaterialien aufgrund ihrer Kapazit\u00e4t von 4200mAh\/g als \u201eHoffnung der Batterien der n\u00e4chsten Generation mit hoher Energiedichte\u201c bezeichnet. Allerdings f\u00fchrt die starke Volumenexpansion w\u00e4hrend<\/p>","protected":false},"author":1,"featured_media":4058,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4056","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.2 (Yoast SEO v26.2) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>The &quot;golden code&quot; 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