TY - JOUR
T1 - Substrate-induced coagulation (SIC) of nano-disperse carbon black in non-aqueous media
T2 - A method of manufacturing highly conductive cathode materials for Li-ion batteries by self-assembly
AU - Basch, Angelika
AU - Gollas, Bernhard
AU - Horn, Roger
AU - Besenhard, Jürgen O.
N1 - Funding Information:
This work was supported by the Austrian Science Foundation (FWF) in the special research program ‘‘Electroactive Materials’’ (SFB Elektroaktive Stoffe). The authors thank Georg Jakopic (Joanneum Research, Austria) for the ellipsometry, Robert T. Jones for XPS-, Jörg H. Albering for AFM-, Julian Wagner, Joong-Hee Han and Angus Netting for SEM measurements.
PY - 2005/2
Y1 - 2005/2
N2 - Substrate-induced coagulation (SIC) is a coating process based on self-assembly for coating different surfaces with fine particulate materials. The particles are dispersed in a suitable solvent and the stability of the dispersion is adjusted by additives. When a surface, pre-treated with a flocculant e.g. a polyelectrolyte, is dipped into the dispersion, it induces coagulation resulting in the deposition of the particles on the surface. A non-aqueous SIC process for carbon coating is presented, which can be performed in polar, aprotic solvents such as N-Methyl-2-pyrrolidinone (NMP). Polyvinylalcohol (PVA) is used to condition the surface of substrates such as mica, copper-foil, silicon-wafers and lithiumcobalt oxide powder, a cathode material used for Li-ion batteries. The subsequent SIC carbon coating produces uniform layers on the substrates and causes the conductivity of lithiumcobalt oxide to increase drastically, while retaining a high percentage of active battery material.
AB - Substrate-induced coagulation (SIC) is a coating process based on self-assembly for coating different surfaces with fine particulate materials. The particles are dispersed in a suitable solvent and the stability of the dispersion is adjusted by additives. When a surface, pre-treated with a flocculant e.g. a polyelectrolyte, is dipped into the dispersion, it induces coagulation resulting in the deposition of the particles on the surface. A non-aqueous SIC process for carbon coating is presented, which can be performed in polar, aprotic solvents such as N-Methyl-2-pyrrolidinone (NMP). Polyvinylalcohol (PVA) is used to condition the surface of substrates such as mica, copper-foil, silicon-wafers and lithiumcobalt oxide powder, a cathode material used for Li-ion batteries. The subsequent SIC carbon coating produces uniform layers on the substrates and causes the conductivity of lithiumcobalt oxide to increase drastically, while retaining a high percentage of active battery material.
KW - Carbon coating
KW - Composite electrode
KW - Dip-coating
KW - Li-ion battery
KW - Non-aqueous dispersion
KW - Substrate-induced coagulation (SIC)
UR - http://www.scopus.com/inward/record.url?scp=14744273139&partnerID=8YFLogxK
U2 - 10.1007/s10800-004-5823-6
DO - 10.1007/s10800-004-5823-6
M3 - Article
AN - SCOPUS:14744273139
SN - 0021-891X
VL - 35
SP - 169
EP - 176
JO - Journal of Applied Electrochemistry
JF - Journal of Applied Electrochemistry
IS - 2
ER -