ELECTRODE FOR LITHIUM ION SECONDARY BATTERIES, METHOD FOR PRODUCING SAME, AND LITHIUM ION SECONDARY BATTERY

摘要

[Problem] To provide an electrode which is capable of constituting a lithium ion secondary battery that has excellent battery characteristics, while using carbon nanotubes as a conductive assistant; a method for producing the electrode; and a lithium ion secondary battery which comprises the electrode. [Solution] An electrode for lithium ion secondary batteries of the present invention comprises an electrode mixture layer that contains carbon nanotubes as a conductive assistant, while containing a deoxyribonucleic acid as a dispersant for the carbon nanotubes. The content of the carbon nanotubes in the electrode mixture layer is 0.001-5 parts by mass per 100 parts by mass of the active material particles. A lithium ion secondary battery of the present invention comprises the electrode of the present invention as a positive electrode and/or a negative electrode. The electrode of the present invention can be produced by a production method of the present invention wherein an electrode mixture layer is formed from an electrode mixture-containing composition that is prepared using a dispersion that contains carbon nanotubes and a deoxyribonucleic acid.