Safe Battery Solvents

摘要

An ion transporting solvent for use with batteries can be improved by simultaneously shortening a phosphazene compound's pendent groups, eliminating most or all of the distal ion carriers, and randomizing the solvent molecules so as to intentionally disrupt symmetry to the maximum degree possible. The combination of these strategies dramatically improves battery performance to the point where the performance recorded is comparable to batteries using conventional organic solvents.

主权项

1. An electrolyte solvent, comprising:
a cyclic phosphazene compound comprising:
a cyclic backbone of alternating phosphorus atoms and nitrogen atoms and two associated pendent chemical chains bound to each of said phosphorus atoms,wherein said associated pendent chemical chains are randomized and comprise no more than ten skeletal atoms; at least one of said associated pendent chemical chains comprises no more than four skeletal atoms; each of said skeletal atoms chosen from the group consisting of carbon, oxygen, and sulfur; and each of said skeletal atoms bound directly to said phosphorous atoms chosen from the group consisting of oxygen and sulfur.