New blended composite high-capacity anode material for Li-ion batteries

A team from Chonnam National University (Korea) and Hyundai Motor have developed a new composite anode for Li-ion batteries that presents initial discharge and charge capacities of 652.57 mAh/g and 647.54 mAh/g, respectively, with a capacity retention of 98% after 20 cycles.

A paper on their work appears in the journal Electrochemistry Communications.

The researchers developed the composite anode by blending TiP₂O₇ and layered Li_2.6Co_0.4N. The composite reduces the initial high irreversible capacity of TiP₂O7 and Li_2.6Co_0.4N, which hinders their potential application in lithium-ion batteries, the authors said. Such blending can provide a solution to electrodes suffering from initial irreversible capacity, they suggested.

Resources

• Alok Kumar Rai, Jinsub Lim, Vinod Mathew, Jihyeon Gim, Jungwon Kang, Baboo Joseph Paul, Donghan Kim, Seungho Ahn, Saheum Kim, Kyunyoung Ahn, Jaekook Kim (2012) Highly reversible capacity nanocomposite anode for secondary lithium-ion batteries, Electrochemistry Communications, Volume 19, Pages 9-12, doi: 10.1016/j.elecom.2012.02.036