日本金属学会 2019年秋期(第165回)講演大会
2019年9月11日〜9月13日岡山大学津島キャンパス
日本金属学会 2019年秋期(第165回)講演大会
2019年9月11日〜9月13日岡山大学津島キャンパス
[KJS5]Developing electrode materials for Li-ion batteries: High Rate capability
Kim Minkyu1、Kim Minkyung1、*Kang Byoungwoo1(1. Pohang University of Science and Technology (POSTECH), Korea)
キーワード：
Li-ion Battery、Cathode、F-containing electrode materials、high rate capability
LiFeSO4F or LiVPO4F can have higher energy density than LiFePO4 due to high redox potential. Especially, LiFeSO4F achieves the highest voltage (3.9 V) among Fe2+/Fe3+ redox couples. Even though triplite LiFeSO4F has full disordering of Li/Fe in metal sites that can block Li long-range Li diffusion channel and then lead to poor electrochemical activity, it can show reasonable electrochemical activity and good rate capability.