Hugh Y Wang

age ~83

from Gleneden Beach, OR

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Hugh Wang Phones & Addresses

Layered Lithium Cobalt Oxides Free Of Localized Cubic Spinel-Like Structural Phases And Method Of Making Same
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US Patent:

6589499, Jul 8, 2003
Filed:

Sep 12, 2001
Appl. No.:

09/952355
Inventors:

Yuan Gao - Ocean NJ
Marina Yakovleva - Gastonia NC
Hugh H. Wang - Brandon FL
Assignee:

FMC Corporation - Philadelphia PA
International Classification:

C01D 1500
US Classification:

423594, 4292181, 4292313
Abstract:

A compound having the formula Li Co A O , is provided wherein A is one or more dopants having an average oxidation state N such that +2. 5N+3. 5, 0. 901. 10, 0, 0 and +=1. The compound has a substantially single phase, hexagonal layered crystal structure and is substantially free of localized cubic spinel-like structural phases, wherein, in the powder x-ray diffraction pattern, there are no diffraction peaks at a smaller scattering angle than the diffraction peak corresponding to Miller indices.

Method Of Producing Layered Lithium Metal Oxides Free Of Localized Cubic Spinel-Like Structural Phases
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US Patent:

6620400, Sep 16, 2003
Filed:

Sep 12, 2001
Appl. No.:

09/952357
Inventors:

Yuan Gao - Ocean NJ
Marina Yakovleva - Gastonia NC
Hugh H. Wang - Brandon FL
John F. Engel - Belmont NC
Assignee:

FMC Corporation - Philadelphia PA
International Classification:

C01D 1500
US Classification:

42359415, 4235946, 423599
Abstract:

The present invention includes substantially single-phase lithium metal oxide compounds having hexagonal layered crystal structures that are substantially free of localized cubic spinel-like structural phases. The lithium metal oxides of the invention have the formula Li M A O , wherein M is one or more transition metals, A is one or more dopants having an average oxidation state N such that +2. 5N+3. 5, 0. 901. 10, and +=1. The present invention also includes dilithiated forms of these compounds, lithium and lithium-ion secondary batteries using these compounds as positive electrode materials, and methods of preparing these compounds.

Layered Lithium Metal Oxides Free Of Localized Cubic Spinel-Like Structural Phases And Methods Of Making Same
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US Patent:

7074382, Jul 11, 2006
Filed:

Jun 12, 2002
Appl. No.:

10/170180
Inventors:

Yuan Gao - Ocean NJ, US
Marina Yakovleva - Gastonia NC, US
Hugh H. Wang - Brandon FL, US
John F. Engel - Belmont NC, US
Assignee:

FMC Corporation - Philadelphia PA
International Classification:

C01D 15/00
C01G 51/00
US Classification:

4235944, 4235946, 4292313
Abstract:

The present invention includes substantially single-phase lithium metal oxide compounds having hexagonal layered crystal structures that are substantially free of localized cubic spinel-like structural phases. The lithium metal oxides of the invention have the formula LiMAO, wherein M is one or more transition metals, A is one or more dopants having an average oxidation state N such that +2. 5≦N≦+3. 5, 0. 90≦α≦1. 10, and β+γ=1. The present invention also includes dilithiated forms of these compounds, lithium and lithium-ion secondary batteries using these compounds as positive electrode materials, and methods of preparing these compounds.