Electrochemical energy storage system

摘要

An electrochemical energy storage system includes a positive electrode, a negative electrode disposed proximally to and not in contact with the positive electrode, and a non-aqueous electrolyte, wherein the positive electrode and the negative electrode are immersed in the non-aqueous electrolyte, and a case is presented in the energy storage system to accommodate the non-aqueous electrolyte, the positive electrode, and the negative electrode. The positive electrode has a porous matrix having a plurality of micrometer sized pores and nanostructured metal oxides, wherein the porous matrix is a 3-dimensional (3D) mesoporous metal or a 3D open-structured carbonaceous material, and the nanostructured metal oxides are coated inside the plurality of pores of the porous matrix. The non-aqueous electrolyte includes organic salts having acylamino group and lithium salts characterized as LiX, wherein Li is lithium and X comprises ClO4−, SCN−, PF6−, B(C2O4)2−, N(SO2CF3)2−, CF3SO3−, or the combination thereof.

主权项

1. A non-aqueous electrolyte for an electrochemical capacitor, comprising:
organic compounds having at least one acylamino group; and lithium salts characterized as LiX, wherein Li is lithium and X comprises SCN−; the organic compounds and the lithium salts are in solid state before mixing; the organic compounds are cyclic compounds; and the cyclic compounds comprise 2-oxazolidinone, ethyleneurea, or the combination thereof.