The Effect of Dispersion Degree of Positive Electrodes Containing Carbon Nanotubes with Identical Composition on Contact Resistance in Lithium Ion Secondary Batteries

Shinya ONODERA, Naoki KATO, Tomoyuki ITO, Tomohiro ITO, Kazuhiro TACHIBANA, Tatsuo NISHINA
2015 Electrochemistry (Tokyo. 1999)  
In this study the formula for expressing contact resistance R c between the aluminum (Al) current collector and positive electrode composite in lithium secondary batteries is derived as follows: (1) R c is proportional to the thickness of the Al oxide film and apparent electric susceptibility of the composite χ e . (2) R c decreases when the active material is coated with Carbon Nanotubes (CNT) due to the reduction of χ e . (3) χ e can be formulated by the contribution ratio C i of the
more » ... C i of the component i of the composite, with C i determined by the dispersed condition of the composite.
doi:10.5796/electrochemistry.83.386 fatcat:sceao4wh7jf4vkhjiazpeba3ze