High power LiCoO2 cathode materials with ultra energy density for Li-ion cells

作者：Jo Minki; Jeong Sookyung; Cho Jaephil^*

来源：Electrochemistry Communications, 2010, 12(7): 992-995.

DOI：10.1016/j.elecom.2010.05.010

• High power
• LiCoO2
• Energy density
• Li-ion cell
• Rate capability

Hydrothermally prepared 100 nm-sized LiCoO2 with a plate morphology packed in a crucible resulted in 40 mu m-sized particles that consisted of aggregated <1 micron-sized particles after annealing at 900 degrees C for 3 h. In the condition where the optimized electrode pore volume was 20%, 4.1 g/cc of electrode density was obtained, which corresponded to 3 Wh/cc, which is the highest value among the cathode materials. Furthermore, the LiCoO2 showed excellent capacity retention of 78% after 290 cycles in a Li-ion cell under 7 C rate cycling.

• 出版日期2010-7