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AssigneeLG Energy Solution, Ltd.
InventorsIl Jae Moon, Joo Ho Park, Woo Ha Kim, Sung Soo Yoon
Estimating the term…
A negative electrode and a secondary battery, the negative electrode having a negative electrode active material layer including a silicon-based negative electrode active material and a conductive agent. The conductive agent includes a carbon nanotube structure in which a plurality of single-walled carbon nanotube units are bonded to each other side by side, wherein the carbon nanotube structure has an average length of 2 μm to 20 μm. The carbon nanotube structure has an average A value in a range of 70 to 100. The A value is defined by the disclosed [Equation 1] and is measured for each of 60 carbon nanotube structures selected from carbon nanotube structures having an average length of 2 μm to 20 μm which are observed when a surface of the negative electrode active material layer is checked at a magnification of 20,000 through a scanning electron microscope (SEM).
A negative electrode comprising a negative electrode active material layer that includes a negative electrode active material and a conductive agent,
Dependencies are inferred from the claim text.