Fire-resistant gas generating battery electrolytes

Details Fire-resistant gas generating battery electrolytes Fire-resistant gas generating battery electrolytes

H - Electricity

01

M

H01M 10/40 (2006.01) H01M 6/16 (2006.01)

Patent

CA 2313027

A compound that generates a fire-retardant gas upon decomposition has general structure (I) wherein, X is N, C, S, NO, N2, CO, SO; A is substantially any organic moiety including alkyl, aryl, alkoxy, cyclic, fused cyclic, heteroatoms, ketals, acetals or alcohols. B1 and B2 are substantially any organic moiety including alkyl, aryl, alkoxy, cyclic, fused cyclic, heteroatoms, ketals, acetals or alcohols, also including oxygen, hydrogen and null; and n is an integer from 0-100. Preferred gases generated thereby include CO, SO2, SO3, NO, N2O, NO2 and N2. It is also preferred that the generated gas assists in formation of a solid electrolyte interface (SEI) between the electrolyte and at least one of the electrodes. It is most preferred that the cell have a conductivity greater than 10-3 S/cm.

Un composé produisant un gaz ignifugeant lors de la décomposition présente la structure générale (1) dans laquelle X représente N, C, S, NO, N¿2?, CO, SO; A représente sensiblement n'importe quelle fraction organique comprenant alkyle, aryle, alcoxy, des hétéro-atomes cycliques, cycliques fusionnés, des cétals, des acétals ou des alcools. B?1¿ et B?2¿ représentent sensiblement n'importe quelle fraction organique comprenant alkyle, aryle, alcoxy, des hétéro-atomes cycliques, cycliques fusionnés, des cétals, des acétals ou des alcools, comprenant également oxygène, hydrogène et 0; et M représente un nombre entier compris entre 0 et 100. Les gaz préférés produits ainsi comprennent CO, SO¿2?, SO¿3?, NO, N¿2?O, NO¿2?, et N¿2?. Il est également préféré que le gaz produit aide à la formation d'une interface d'électrolyte solide (IES) entre l'électrolyte et au moins une des électrodes. Idéalement, la pile peut avoir une conductivité supérieure à 10?-3¿ S/cm.

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