Patent ID: 9577257
Date: 2017-02-21
CPC Classifications: C01B,C01C,C01G,H01M,Y02E,Y02P

Claim:
1. A method of producing electrode active materials, comprising: generating a source material of titanium (Ti) and a source material of iron (Fe) from an ilmenite; performing a first operation to the source material of Fe, comprising: performing a second operation to the source material of Ti, comprising: wherein each electrode active material is selected from A wherein the A is selected from lithium (Li), sodium (Na), potassium (K), silver (Ag), rubidium (Rb), caesium (Cs), copper (Cu), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), ammonium (NH wherein M is an element selected from Mg, aluminum (Al), silicon (Si), Ca, Ti, vanadium (V), chromium (Cr), manganese (Mn), Fe, cobalt (Co), nickel (Ni), Cu, zinc (Zn), gallium (Ga), germanium (Ge), Sr, zirconium (Zr), niobium (Nb), molybdenum (Mo), tin (Sn), Ba, lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutelium (Lu), hafnium (Hf), tantalum (Ta), tungsten (W), cadmium (Cd), or a mixture thereof; wherein X is an element selected from phosphorus (P), Si, sulfur (S), Mo, W, or a mixture thereof; and wherein the generating the source material of Ti and the source material of Fe from an ilmenite comprises: providing the ilmenute; dissolving the ilmenute in sulfuric acid to form a first mixture; reducing the first mixture using a reducing agent to form a second mixture; filtering the second mixture to form a first filtrate and a first retained material; crystallizing the first filtrate, and filtering to form a second filtrate and a second retained material, wherein the second retained material is the source material of Fe comprising FeSo hydrolyzing the second filtrate to form a third mixture; filtering the third mixture to form a third filtrate and a third retained material, wherein the third retained material comprises the source of material of Ti; and calcinating at least a portion of the washed third retained material to form titanium dioxide (TiO