A fluoroxalate cathode material for potassium-ion batteries with ultra-long cyclability

Cathode Material with Superior Rate Capability for Na-Ion Batteries

Dr. L. Liu, Prof. X. Li, Dr. S.-H. Bo, Dr. Y. Wang, Dr. N. Twu, Prof. G. Ceder Department of Materials Science and Engineering Massachusetts Institute of Technology Cambridge , MA 02139 , USA E-mail: [email protected] Prof. X. Li John A. Paulson School of Engineering and Applied Sciences Harvard University Cambridge , MA 02138 , USA Prof. H. Chen The Woodruff School of Mechanical Engineering Georg...

C/Li2MnSiO4 Nanocomposite Cathode Material for Li-Ion Batteries

Superior hybrid cathode material containing lithium-excess layered material and graphene for lithium-ion batteries.

Graphene-wrapped lithium-excess layered hybrid materials (Li(2)MnO(3)·LiMO(2), M = Mn, Ni, Co, hereafter abbreviated as LMNCO) have been synthesized and investigated as cathode materials for lithium-ion batteries. Cyclic voltammetry measurement shows a significant reduction of the reaction overpotential in benefit of the graphene conducting framework. The electrochemical impedance spectroscopy ...

A Search for the Optimum Lithium Rich Layered Metal Oxide Cathode Material for Li-Ion Batteries

We report the results of a comprehensive study of the relationship between electrochemical performance in Li cells and chemical composition of a series of Li rich layered metal oxides of the general formula xLi2MnO3 · (1-x)LiMn0.33Ni0.33Co0.33O2 in which x = 0,1, 0.2, 0,3, 0.5 or 0.7, synthesized using the same method. In order to identify the cathode material having the optimum Li cell perform...

Er-Doped LiNi0.5Mn1.5O4 Cathode Material with Enhanced Cycling Stability for Lithium-Ion Batteries

The Er-doped LiNi0.5Mn1.5O₄ (LiNi0.495Mn1.495Er0.01O₄) sample was successfully prepared by citric acid-assisted sol-gel method with erbium oxide as an erbium source for the first time. Compared with the undoped sample, the Er-doped LiNi0.5Mn1.5O₄ sample maintained the basic spinel structure, suggesting that the substitution of Er3+ ions for partial nickel and manganese ions did not change the i...