Conductive Material Dispersion, and Electrode and Lithium Secondary Battery Manufactured Using the Same

An electrode comprising an electrode active material layer, including:

• a carbon-based conductive material;
• and
• a dispersant;
• wherein the dispersant includes a main dispersant and an auxiliary dispersant, wherein:
• the main dispersant is a nitrile-based copolymer;
• and
• the auxiliary dispersant is a copolymer including an oxyalkylene unit and at least one of a styrene unit or an aliphatic hydrocarbon unit.

A conductive material dispersion comprising:

• a carbon-based conductive material;
• a dispersant;
• and
• a dispersion medium,
• wherein the dispersant includes a main dispersant and an auxiliary dispersant, wherein:
• the main dispersant is a nitrile-based copolymer;
• and
• the auxiliary dispersant is a copolymer including an oxyalkylene unit and at least one of a styrene unit or an aliphatic hydrocarbon unit,
• wherein the conductive material dispersion satisfies Equation (1) below when the content of the main dispersant is W1 (wt %), the content of the auxiliary dispersant is W2 (wt %), the content of the carbon-based conductive material is W3 (wt %), and the BET specific surface area value of the conductive material is A(m2/g) in the conductive material dispersion:
• 0.07
• A
• ≤
• {
• (
• W
• ⁢
• 1
• +
• W
• ⁢
• 2
• )
• /
• W
• ⁢
• 3
• }
• ×
• 100
• ≤
• 0.3
• A
• .
• Equation
• ⁢
• (
• 1
• )