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High-Rate NMC Cathodes Achieved with Carbon Nanotube Additive Through a collaborative effort, the Dillon Group at NREL and the Whittingham Group at SUNY -Binghamton have enhanced the conductivity of NMC cathodes to improve their rate capability in Li-ion batteries. These layered cathodes usually suffer from poor electrical conductivity and capacity fade at high charge/discharge rates. [...] Figure 1. Cyclability of lithium nickel manganese oxide and the Fe-substituted cathodes. Passivation of Spinel Cathode Surface through Self-Segregation of Iron The Manthiram Lab has developed an iron-doped, high-voltage cathode based on lithium nickel manganese oxide that results in extended cyclability and improved electrochemical performance. The cathode’s spinel structure enables 3-D Li+-ion diffusion and [...] New Material for High-Voltage Anodes in Lithium-Ion Batteries The Goodenough Lab has synthesized a new anode material that can operate at voltages between 1.0 and 1.6 V vs. Li+/Li0. This TiNb2O7 (TNO) anode joins the ranks of the spinel lithium titanate (Li4Ti5O12) in being an anode material that operates within the window of thermodynamic stability [...] |
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