Product Information


Product Information


DENKA BLACK Li is an ultra-pure acetylene black having minimal metallic impurities used as an conductive additive in lithium ion batteries and next-generation batteries; a rapidly expanding market in recent years.


DENKA BLACK Li maintains the original characteristics of DENKA BLACK, but improves on its predecessor by minimizing the level of metallic impurities to the lowest possible extent.
In addition to fulfilling the fundamental requirements of a lithium-ion battery conductive additive (high electrical conductivity and electrolyte-rentention),
DENKA BLACK Li mitigates battery short-circuits caused by metallic impurities and markedly improves the issue of battery defect rates.

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Ultra-high purity acetylene black

Boasting ultra-high purity afforded by thermal self-decomposition of acetylene black, DENKA BLACK Li is widely used in lithium ion batteries. To meet high quality-demands in this sector, we have finessed our purification techniques through in-house production know-how.
Furthermore, to provide a supply of higher purity grade of carbon black, we established new production facilities in Chiba Plant.
Through the accumulated experience gained from over 70 years of production in Omuta and Singapore, we were able to reduce metallic impurities content to 10% of its original level by harnessing technology to first, minimize generation of metallic impurities and second, remove any metallic impurities generated.


【Li-100】DENKA BLACK Li powder grade
【Li-250】Improved handling and reduced powder scattering is afforded by compressing powder grade
【Li-400】Excellent dispersibility; suited best for high power applications in batteries
【Li-435】Small particle size, high surface area as well as high structure; suited best for high capacity applications in batteries

DENKA BLACK Li Grade(typical values)
DENKA BLACK Li Grade Powder Products Press Products
Li-100 Li-250 Li-400 Li-435
<Form of primary particle>
Average particle size (nm) 35
48 23
Surface Area (㎡/g) 68 58
39 133
Iodine adsorption value (mg/g) 92 82 52 180
 <General physial properties>
Bulk density (g/ml) 0.04 0.08
Hydronchloric acid absorption (ml/5g) 16.8 -
10.4 25.8
Acetone absorption (ml/5g) - 38 - -
Ash content (%) 0.01 0.01 0.01 0.01
Moisture content (%) 0.04 0.07 0.04 0.08
Grit content (ppm) < 10 < 10 < 10 < 10
Packing (kg) 5 10 20 10

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