General Electric Company

Satya Kishore Manepalli

Karthick Vilapakkam Gourishankar

Prasanth Kumar Nammalwar

Anant Achyut Setlur

Don Mark Lipkin

Theodore Robert Grossman

Digamber Gurudas Porob

Alok Mani Srivastava

James Edward Murphy

Robert Joseph Lyons

Atanu Saha

Hari Nadathur Seshadri

Nicholas Edward Antolino

Job Thomas Rijssenbeek

Anbarasan Viswanathan

Prasanth Nammalwar Kumar

A process for treating an electrochemical cell is presented. The process includes charging the electrochemical cell in a discharged state to at least 20 percent state-of-charge of an accessible capacity of the electrochemical cell at a first temperature to attain the electrochemical cell in a partial state-of-charge or a full state-of-charge and holding the electrochemical cell in the corresponding partial state-of-charge or full state-of-charge at a second temperature. The first temperature and the second temperature are higher than an operating temperature of the electrochemical cell.

Treatment processes for electrochemical cells

A phosphor material is presented that includes a blend of a first phosphor, a second phosphor and a third phosphor. The first phosphor includes a composition having a general formula of REMAScSiGeO:Cewherein RE is selected from a lanthanide ion or Y, where M is selected from Mg, Ca, Sr or Ba, A is selected from Mg or Zn and where 0&#x2266;y&#x2266;2, 2.5&#x2266;n&#x2266;3.5, 0&#x2266;w&#x2266;1, and &#x2212;1.5&#x2266;&#x3b4;&#x2266;1.5. The second phosphor includes a complex fluoride doped with manganese (Mn), and the third phosphor include a phosphor composition having an emission peak in a range from about 520 nanometers to about 680 nanometers. A lighting apparatus including such a phosphor material is also presented. The light apparatus includes a light source in addition to the phosphor material.

Phosphor materials and related devices

Systems and methods for recovery of rare-earth constituents from environmental barrier coatings (EBCs) are provided. One method includes for separating rare-earth (RE) containing constituents from a particulate feedstock containing a mixture of RE silicates and non-magnetic constituents includes disposing a collection member in a vicinity of the feedstock and magnetizing the collection member to generate a magnetic field sufficient to selectively attract the RE silicates to the collection member. The method further includes removing the RE silicates from the collection member.

Systems and methods for recovery of rare-earth constituents from environmental barrier coatings

Systems and methods for recovery of rare-earth constituents from environmental barrier coatings are provided. One method includes extracting rare-earth (RE) oxide constituents from a feedstock containing RE silicates and non-RE contaminants. The method includes leaching the REs from the feedstock into an acid to form an acid solution, performing an oxalate precipitation on the acid solution to form an RE oxalate hydrate, and separating the RE oxalate hydrate from the acid solution. The method also includes heat treating the RE oxalate hydrate to form an RE oxide containing the RE elements extracted from the feedstock.

A phosphor material is presented that includes a blend of a first phosphor, a second phosphor and a third phosphor. The first phosphor includes a composition having a general formula of ((SrM)ACe)(AlSi)OF, wherein 0&#x3c;x&#x2266;0.10, 0&#x2266;y&#x2266;0.5, 0&#x2266;z&#x2266;0.5, 0&#x2266;w&#x2266;x, A comprises Li, Na, K, or Rb; and M comprises Ca, Ba, Mg, Zn, or Sn. The second phosphor includes a complex fluoride doped with manganese (Mn), and the third phosphor include a phosphor composition having an emission peak in a range from about 520 nanometers to about 680 nanometers. A lighting apparatus including such a phosphor material is also presented. The light apparatus includes a light source in addition to the phosphor material.

A phosphor, a phosphor blend including the phosphor, a phosphor prepared by a process, and a lighting apparatus including the phosphor blend are disclosed. The phosphor has the formula (CaCeK)Sc(SiGa)Oor derived from a process followed using disclosed amounts of reactants. In the formula, (0&#x3c;p&#x2266;0.06); 0&#x2266;q&#x2266;0.06; 0&#x2266;r&#x2266;0.2; and &#x2212;0.1&#x2266;&#x3b4;&#x2266;0.4. In one embodiment, 3&#x3c;x&#x2266;3.1; 2&#x2266;y&#x2266;2.15; and 3&#x2266;z&#x2266;3.2. Similarly, in another embodiment, 3&#x2266;x&#x2266;3.1; 2&#x3c;y&#x2266;2.15; and 2.8&#x2266;z&#x2266;3.2.

Phosphors for LED lamps

A method for recovering at least one rare earth element from a phosphor is presented. The method includes a halogenation step (a) and a reduction step (b). The phosphor is first halogenated in a molten salt to convert at least one rare earth constituent contained therein to a soluble rare earth halide. Then, the rare earth halide in the molten salt can be reduced, to convert the rare earth halide to a rare earth element in its elemental state. A method for individually recovering multiple rare earth elements from a phosphor is also presented.

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Bengaluru, India

Satya Kishore Manepalli