Titanium Dioxide Coated Graphite Anode Materials with Fast Charging Capability for Lithium-Ion Battery

Thursday, 5 October 2017: 11:10
Maryland C (Gaylord National Resort and Convention Center)
D. S. Kim, H. Yoo (Hanyang University), G. Jeong (Korea Electronics Technology Institute), and H. Kim (Hanyang University)
Along with the rapid growth in robots, mobile electronics and electric vehicles (EVs) technology, lithium ion batteries (LIBs) are facing several technical challenges such as higher energy density and fast charging capability. Graphite, currently used anode materials for LIBs, has technical limitations to be used for robots, mobile electronics and EVs in terms of energy density and fast charging capability. To solve these problems, various anode materials have been suggested for alternative graphite anode material. In this work, titanium dioxide coated graphite was investigated as an anode material with fast charging capability for LIBs. The proposed core-shell structure, titanium dioxide coated graphite anode electrode exhibited an excellent rate capability of 96.4 % of the capacity retention at a rate of 10 C compare to that tested at a rate of 0.2 C without any degradation of reversible capacity and long-term cycle performance. The characterization, microstructure and electrochemical properties of the titanium dioxide coated graphite will be discussed in more detail.