Abstract: A current collector is disclosed and comprises a conductive material and an elemental metal of a group 6 metal contacting the conductive material. Also disclosed are an electrochemical cell comprising a current collector, a cathode adjacent to the current collector, and an alkali metal-based electrolyte between the current collector and the cathode, with the cathode separated from the group 6 metal by the alkali metal-based electrolyte. A method of operating the electrochemical cell is also disclosed.

Abstract: A lithium ion battery having a cathode including an ?-copper vanadium oxide having a stoichiometry of Cu7?xV6O19?X, wherein 0?x?0.5, and a discharge capacity of at least 250 mAh/g after 20 cycles is claimed. Solid state and hydrothermal reaction methods of synthesizing the ?-copper vanadium oxide are also claimed.

Abstract: The present disclosure relates to novel compositions, electrodes, electrochemical storage devices (batteries) and ionic conduction devices that use cubic ionic conductor (“CUBICON”) compounds, such as nitridophosphate compounds. The cubic ionic conductor compound have a framework formula [MT3X10]n? (1) and a general formula AxMT3X10 (2), where M is a cation in octahedral coordination, T is a cation in tetrahedral coordination, X is an anion, and the framework has a net negative charge of ?n, a net charge of +n. The framework of this class of compounds can accept excess ions.