Importance

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Abstract

An electrolyte includes a composite salt mixture with a halogenated boron cluster salt. The halogenated boron cluster salt includes a cation selected from Li⁺, Na⁺, Mg²⁺, Ca²⁺, Zn²⁺ and Al³⁺, and a halogenated boron cluster anion. The halogenated boron cluster anion has a structure of [CB_(y−1)H_(y−z−i)R_zX_i]⁻, [C₂B_(y−2)H_{(y−t−j−1)}R_tX_j]⁻, [C₂B_(y−3)H_(y−t−j)R_tX_j]⁻, [C₂B_(y−3)H_{(y−t−j−1)}R_tX_j]²⁻, or [C₂B_(y−4)H_{(y−t−j−1)}R_tX_j]²⁻, [CB_(y−1)H_(y−z)R_z]⁻, [C₂B_(y−2)H_(y−t−1)R_t]⁻, [C₂B_(y−3)H_(y−t)R_t]⁻, [C₂B_(y−3)H_(y−t−1)R_t]²⁻, and/or B_yH_(y−z−i)R_zX_i]²⁻, where y is an integer within a range of 6 to 12, (z+i) is an integer within a range of 0 to y, (t+j) is an integer within a range of 0 to (y−1), and X is F, Cl, Br, or I. Also, the composite salt mixture can be at least 90 mol % halogenated, for example, at least 90 mol % mono-halogenated or less than 10 mol % mono-halogenated.

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First Claim