Patent ID: 7205067

Claim:
A battery assembly, comprising: a battery having a casing containing a positive electrode, a negative electrode comprising an intercalation active material, and an electrolyte in ion-transfer communication with the positive electrode and the negative electrode, the positive electrode comprising a compound represented by the general nominal formula: A a M m (XY 4 ) c Z e , wherein: a. A is selected from the group consisting of elements from Group I of the Periodic Table, and mixtures thereof, and 0<a≦9; b. M includes at least one redox active element, and 1≦m≦3; c. XY 4 is selected from the group consisting of X′[O 4-x ,Y′ x ], X′[O 4-y , Y′ 2y ], X″S 4 , [X z ″′,X′ 1-z ]O 4 , and mixtures thereof, wherein: i. X′ and X″′ are each independently selected from the group consisting of P, As, Sb, Si, Ge, V, S, and mixtures thereof; ii. X″ is selected from the group consisting of P, As, Sb, Si, Ge, V, and mixtures thereof; iii. Y′ is selected from the group consisting of a halogen, S, N, and mixtures thereof; and iv. 0≦x≦3, 0≦y≦2, 0≦z≦1 and 0≦c≦3; and d. Z is selected from the group consisting of a hydroxyl (OH), a halogen selected from Group 17 of the Periodic Table, and mixtures thereof, and 0≦e≦4; wherein A, M, X, Y, Z, a, m, x, y, z, c and e are selected so as to maintain electroneutrality of the compound; the battery assembly further comprising a phase change-assisted passive heat sink in heat transfer relationship with the battery casing, wherein the phase change-assisted passive heat sink contains a thermally conductive filler.