{"product_id":"clibsicpcnc","title":"Needle Coke Powder for Si\/C Anode Synthesis, 100-500 g\/bottle, CLIBSiCPCNC","description":"\u003cp\u003eNeedle coke powder—derived from petroleum or coal tar pitch—is a highly graphitizable, premium carbon material characterized by its needle-like anisotropic microstructure, high electrical conductivity, low thermal expansion coefficient, and excellent mechanical strength. When utilized as the carbon matrix or framework precursor for Silicon\/Carbon (Si\/C) composite anodes, needle coke serves multiple critical functions: (1) \u003cstrong\u003eConductive Elastic Backbone\u003c\/strong\u003e: Unlike amorphous hard carbon, needle coke provides structured graphitic domains that maintain long-range electronic conductivity throughout repeated volume expansion and contraction cycles of silicon. (2) \u003cstrong\u003eVolumetric Buffering Cavities\u003c\/strong\u003e: When pulverized and engineered with secondary pore structures, needle coke particles accommodate embedded nano-silicon domains, buffering the massive ~ 300-400% volumetric swings of silicon and preventing particle pulverization. (3) \u003cstrong\u003eScalable Precursor Cost\u003c\/strong\u003e: Offers a high-purity, industrially scalable, and cost-effective alternative to synthetic graphite or specialized graphene frameworks for mass-producing high-capacity composite anodes (~ 500-700 mAh\/g).\u003c\/p\u003e\n\u003ctable style=\"width: 100%; height: 248.738px;\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 46.8875px;\"\u003e\n\u003ctd style=\"width: 30.5755%; height: 46.8875px;\"\u003e\u003cem\u003ePart Number\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.0647%; height: 46.8875px;\"\u003e\n\u003cp\u003e\u003cspan\u003eCLIBSiCPCNC (C-LIB-SiC-PC-NC)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 30.5755%; height: 35.6px;\"\u003e\u003cem\u003ePowder Sizes\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.0647%; height: 35.6px;\"\u003e\n\u003cp\u003eD50 = 8.9-9.6 um\u003c\/p\u003e\n\u003cp\u003eD99 = 23.5-25.2 um\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 46.8875px;\"\u003e\n\u003ctd style=\"width: 30.5755%; height: 46.8875px;\"\u003e\u003cem\u003eFeatures\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.0647%; height: 46.8875px;\"\u003e\n\u003cp\u003e\u003cspan\u003e(1) Obvious flow texture and large aspect ratio \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e(2) Low expansion constant and void rate \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e(3) High electronic and heat conductivity\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e(4) High mechanical strength under high\/low temperature \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 30.5755%; height: 19.6px;\"\u003e\u003cem\u003ePackage Grade\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.0647%; height: 19.6px;\"\u003e100 g, 200 g, and 500 g\/bottle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eNotes\u003c\/strong\u003e: Please store the needle coke powder precursor in a dry area (glovebox is preferred)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eReferences\u003c\/strong\u003e: \u003c\/span\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003cspan\u003e\u003ca href=\"https:\/\/pubs.acs.org\/ascecg\/article-abstract\/14\/10\/4842\/5087190\/Constructing-Multilayer-Hollow-Graphene-Spheres-on\"\u003eY. Li, et al. Constructing Multilayer Hollow Graphene Spheres on Needle Coke Via Nickel Acetate Catalysis for High-Performance Silicon\/Graphite Composite Anodes, ACS Sustainable Chem. Eng. (2026) 14 (10): 4842–4852.\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0013468625015646\"\u003eY. Li, et al. Synergistic enhancement of lithium storage in Si\/graphite composite anodes via KMnO4-tuned oxygen functional groups and pore structures in needle coke, Electrochimica Acta, 2025, 540, 147205\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"BESHXT","offers":[{"title":"100 g","offer_id":67822066434278,"sku":"CLIBSiCPCNC100","price":79.0,"currency_code":"USD","in_stock":true},{"title":"200 g","offer_id":67822066467046,"sku":"CLIBSiCPCNC200","price":139.0,"currency_code":"USD","in_stock":true},{"title":"500 g","offer_id":67822066499814,"sku":"CLIBSiCPCNC500","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CLIBSiCPCNC_main.jpg?v=1792597966","url":"https:\/\/echemsupplies.com\/products\/clibsicpcnc","provider":"EChem Supplies","version":"1.0","type":"link"}