Abstract
A study was made of 3D structuring applied to electrode collectors for the purpose of heightening lithium-ion battery performance.It was confirmed that loading, which is the electrolyte composite coating amount per unit area, could be increased to 150 mg/cm2 on the cathode. The results from the calculation of energy density when that electrode was applied clearly showed that energy density could be increased 10% with respect to the foil-coated cathode.The results from comparison of the foil-coated cathode and 3D-structured cathode with the cathode loading fixed at 90 mg/cm2 confirmed that increasing the contact area of the active material and the collector can reduce the initial resistance by 17% with respect to the foil-coated cathode. It was also confirmed that, while the resistance increase during cycle testing was 149% for the foil-coated cathode, this amount was held to 29% for the 3D-structured cathode because of the suppression of structural change.It was verified that application of the 3D-structured cathode in a lithium-ion battery could achieve a balance between enhancing energy density and addressing the issue of suppressing the increase in resistance and the decrease in durability.
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Article of Honda R&D Technical Review Vol.32 No.2 (118 - 128)
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Kiyoshi TANAAMI, Yuji ISOGAI, Shintaro AOYAGI, Kazuki OKUNO, Hiroshi TAKEBAYASHI, Kikuo SENOO, Akihisa HOSOE.
3D-structured Cathode Electrode for High Capacity Lithium-ion Battery
Honda R&D Technical Review Vol.32 No.2 pp.(118 - 128)2020.
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