(DE4412758-A1)      Electrochemical cell comprising as (a) at least part of an anode hi-transition metal oxide or sulphide with a (B2)X4n- spinel type framework structure of an A(B2)X4 spinel where A and B are metal cations from Li, Ti, V, Mn, Fe and Co and X is oxygen or sulphur and n- refers to the overall charge of the (B2)X4 unit. The transition metal cation o which in its fully discharge state has a mean oxidation state greater than +3 for Ti, +3 for V, +3,5 for Mn, + 2 for Fe, and +2 for Co. (b) at least part of a cathode a Li metal anode or sulphide; (c) an electrically insulating Li containing liquid or polymeric electronically conductive electrolyte between the anode and cathode so that on discharging the cell Li ions are extracted from the spinel of the anode with the oxidation sate of the metal ions of the anode increasing while a concomitant insertion of Li ions into the cathode takes place with the oxidation state decreasing.    USE -   Electrochemical cells    ADVANTAGE -   Cells contain no metallic lithium making item safer.    (FR2709602-A1)      Electrochemical cell comprising as (a) at least part of an anode hi-transition metal oxide or sulphide with a (B2)X4n- spinel type framework structure of an A(B2)X4 spinel where A and B are metal cations from Li, Ti, V, Mn, Fe and Co and X is oxygen or sulphur and n- refers to the overall charge of the (B2)X4 unit. The transition metal cation o which in its fully discharge state has a mean oxidation state greater than +3 for Ti, +3 for V, +3,5 for Mn, + 2 for Fe, and +2 for Co. (b) at least part of a cathode a Li metal anode or sulphide; (c) an electrically insulating Li containing liquid or polymeric electronically conductive electrolyte between the anode and cathode so that on discharging the cell Li ions are extracted from the spinel of the anode with the oxidation sate of the metal ions of the anode increasing while a concomitant insertion of Li ions into the cathode takes place with the oxidation state decreasing.    USE -   Electrochemical cells    ADVANTAGE -   Cells contain no metallic lithium making item safer.    (JP7085878-A)      Electrochemical cell comprising as (a) at least part of an anode hi-transition metal oxide or sulphide with a (B2)X4n- spinel type framework structure of an A(B2)X4 spinel where A and B are metal cations from Li, Ti, V, Mn, Fe and Co and X is oxygen or sulphur and n- refers to the overall charge of the (B2)X4 unit. The transition metal cation o which in its fully discharge state has a mean oxidation state greater than +3 for Ti, +3 for V, +3,5 for Mn, + 2 for Fe, and +2 for Co. (b) at least part of a cathode a Li metal anode or sulphide; (c) an electrically insulating Li containing liquid or polymeric electronically conductive electrolyte between the anode and cathode so that on discharging the cell Li ions are extracted from the spinel of the anode with the oxidation sate of the metal ions of the anode increasing while a concomitant insertion of Li ions into the cathode takes place with the oxidation state decreasing.    USE -   Electrochemical cells    ADVANTAGE -   Cells contain no metallic lithium making item safer.