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New Insights into Improving Rate Performance of Lithium-Rich Cathode Material
Yongqing Wang1, Zhenzhong Yang2,3, Yumin Qian1
1National Institute of Advanced Industrial Science and Technology (AIST), Umezono 1-1-1, Tsukuba, 305-8568, Japan.
Advanced Materials (Deerfield Beach, Fla.)
|May 22, 2015
Abstract:
A Sn doping strategy is demonstrated to improve lithium diffusion kinetics by expanding the spacing of (003) planes without destroying the layered structure. A large (003) spacing will significantly decrease the energy barrier associated with lithium diffusion. Besides better rate capability, the Sn-doped material exhibits an unexpected much improved capacity above 3.0 V (vs Li(+) /Li), which is highly desired in future applications.
