摘要:
The invention relates to a lithium battery including a cell comprising: a positive electrode, a negative electrode, and an electrolyte consisting of an aqueous solution of a lithium salt, characterized in that the electrolyte has a pH of at least 14, the positive electrode has a lithium intercalation potential greater than 3.4 V, and the negative electrode has a lithium intercalation potential less than 2.2 V.
摘要:
A material or compound is provided having a spinel structure and corresponding to the formula LiyNi0.5Mn1.5−xIVMnxIIIAzO4−d, where:0.02≦x≦0.35;d>0;A is selected from the group comprising Na, K, Mg, Nb, Al, Ni, Co, Zr, Cr, Fe, Cu, Ti, Zn, Si and Mo;0.8≦y≦1.2;0≦z≦0.1; and has a mesh parameter of between 8.174 and 8.179 Å.
摘要翻译:提供了具有尖晶石结构并对应于Li y Ni 0.5 Mn 1.5-x IV Mn x IIa z O 4-d的材料或化合物,其中:0.02≦̸ x≦̸ 0.35; d> 0; A选自Na,K,Mg,Nb,Al,Ni,Co,Zr,Cr,Fe,Cu,Ti,Zn,Si和Mo; 0.8≦̸ y≦̸ 1.2; 0≦̸ z≦̸ 0.1; 并具有介于8.174与8.179之间的网格参数。
摘要:
The present invention relates to a crucible that can be used for solidifying a silicon ingot from molten silicon, characterized in that same is at least partially coated on the inner surface thereof with at least one layer consisting of a material produced by thermal decomposition of polysilizane(s), said layer having a shear strength greater than 1 Pa and no higher than 500 MPa, and being in the form of a stack of adjoining layers of non-contiguous tiles. The invention also relates to a method for preparing such crucibles.
摘要:
A lithium battery comprises at least a positive electrode containing a material whose lithium insertion and deinsertion potential is lower than or equal to 3.5 Volts in relation to the potential of the Li+/Li couple, a negative electrode and a non-aqueous electrolyte disposed between the positive and negative electrodes. The electrolyte comprises at least a lithium salt dissolved in an aprotic organic solvent wherein a polymerizable additive is added, chosen from carbazol and the derivatives thereof and being used to prevent the battery from operating as soon as the voltage at the terminal connections of the battery reaches a value resulting in polymerization of the additive.
摘要:
A powdery compound selected from the group consisting of Li4Ti5O12 and its derivatives selected from the group consisting of Li4−xMxTi5O12 and Li4Ti5−yNyO12 (x and y between 0 and 0.2, M and N selected from the group consisting of Na, K, Mg, Nb, Al, Ni , Co, Zr, Cr, Mn, Fe, Cu, Zn, Si and Mo), used as active material of an electrode for a lithium storage battery, consists of unitary particles having a diameter not greater than 1 μm and 10-50% volume agglomerated particles having a diameter not greater than 100 μm wherein the agglomerated particles formed by agglomeration of said unitary particles. The method for producing such a compound preferably consists in grinding the synthesized oxide for a duration comprised between 24 hours and 48 hours in a planetary mill and in then performing thermal treatment at a temperature comprised between 450° C. and 600° C.