Rechargeable lithium cell having a meso-porous conductive material structure-supported phthalocyanine compound cathode

摘要

A rechargeable lithium cell comprising: (a) an anode comprising a prelithiated lithium storage material or a combination of a lithium storage material and a lithium ion source; (b) a hybrid cathode active material composed of a meso-porous structure of a carbon, graphite, metal, or conductive polymer and a phthalocyanine compound, wherein the meso-porous structure is in an amount of from 1% to 99% by weight based on the total weight of the meso-porous structure and the phthalocyanine combined, and wherein the meso-porous structure has a pore with a size from 2 nm to 50 nm to accommodate phthalocyanine compound therein; and (c) an electrolyte or electrolyte/separator assembly. This secondary cell exhibits a long cycle life and the best cathode specific capacity and best cell-level specific energy of all rechargeable lithium-ion cells ever reported.

主权项

1. A rechargeable lithium cell comprising:
(a) a anode comprising an anode active material, wherein said anode active material is a prelithiated lithium storage material or a combination of a lithium storage material and a lithium ion source selected from lithium metal, lithium alloy, or lithium-containing compound; (b) a cathode comprising a hybrid cathode active material consisting of a meso-porous structure of a carbon, graphite, metal, or conductive polymer and a phthalocyanine compound, wherein said phthalocyanine compound is selected from copper phthalocyanine, zinc phthalocyanine, tin phthalocyanine, iron phthalocyanine, lead phthalocyanine, nickel phthalocyanine, vanadyl phthalocyanine, fluorochromium phthalocyanine, magnesium phthalocyanine, manganous phthalocyanine, dilithium phthalocyanine, aluminum phthalocyanine chloride, cadmium phthalocyanine, chlorogallium phthalocyanine, silver phthalocyanine, a metal-free phthalocyanine, a chemical derivative thereof, or a combination thereof, and wherein said meso-porous structure is in an amount of from 1% to 99% by weight based on the total weight of the meso-porous structure and the phthalocyanine compound combined, and wherein said meso-porous structure has a meso-scale pore with a size from 2 nm to 50 nm to accommodate the phthalocyanine compound therein; and (c) electrolyte or a combination of electrolyte and a porous separator, wherein said separator is disposed between said anode and said cathode and the electrolyte is in ionic contact with said anode and said cathode.