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Marca M Doeff

from Hayward, CA
Age ~68
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Also known as:
Marca Maryse Doeff, Marca M Taube
Related to:
Maria B Williams, 61Victoria Foresman, 26Margaretl TaubeAlison Williams, 61Samuel Foresman, 86
Connected to:
Carole A Doege, 84Doris H Doege, 98Jessica M Doege, 35Kristin J Doege, 37Sarah Doege, 31Twila D Doegen, 88Minesta W Doehla, 86Gary L Doehling, 67Gloria J Doehling, 69Michael E Doehling, 56

Marca Doeff Phones & Addresses

  • Hayward, CA
  • Fort Lauderdale, FL
  • Palo Alto, CA
  • Goleta, CA
  • Cardiff by the Sea, CA

Work

Company: Lawrence berkeley national laboratory Oct 2018 Position: Senior scientist

Education

Degree: Doctorates, Doctor of Philosophy School / High School: Brown University 1979 to 1983 Specialities: Chemistry

Skills

Materials Science • Characterization • Electrochemistry • Batteries • Fuel Cells • Lithium Ion Batteries

Industries

Nanotechnology

Resumes

Resumes

Marca Doeff Photo 1

Senior Scientist

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Location:
Hayward, CA
Industry:
Nanotechnology
Work:
Lawrence Berkeley National Laboratory
Senior Scientist
Lawrence Berkeley National Laboratory
Staff Scientist
Spawar 1987 - 1990
Scientist
Education:
Brown University 1979 - 1983
Doctorates, Doctor of Philosophy, Chemistry Swarthmore College 1974 - 1978
Bachelors, Bachelor of Arts, Chemistry Uc Santa Barbara
Skills:
Materials Science
Characterization
Electrochemistry
Batteries
Fuel Cells
Lithium Ion Batteries

Publications

Us Patents

Optimization Of Carbon Coatings

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US Patent:
20090183650, Jul 23, 2009
Filed:
Jun 12, 2007
Appl. No.:
12/302476
Inventors:
Marca M. Doeff - Hayward CA, US
James D. Wilcox - Berkeley CA, US
Robert Kostecki - Lafayette CA, US
Grace Y. Lau - Fremont CA, US
Assignee:
The Regents of the University of California - Oakland CA
International Classification:
C09D 1/00
B05D 5/12
US Classification:
1062862, 427122, 1062868
Abstract:
Several synthetic additives have been used to improve the carbon coatings on LiFePO4 electrode materials. Pyromellitic acid (PA) added prior to calcination decreases the D/G ratios of the carbon produced in situ, while the use of both iron nitrate and PA results in increased spcharacter. Thus, the carbon coatings are structured with a greater fraction of graphitic character. The production of structured carbon coatings results in higher pressed pellet conductivities of LiFePO/C composites and improved electrochemical performance of cells containing these cathode materials, although the carbon content is not necessarily increased. The combination of both ferrocene and PA used during LiFePOsynthesis causes more carbon to be retained, although the structural characteristics are similar to that produced from the same amount of PA alone.

Aluminum Substituted Mixed Transition Metal Oxide Cathode Materials For Lithium Ion Batteries

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US Patent:
20110291043, Dec 1, 2011
Filed:
Sep 23, 2009
Appl. No.:
13/119703
Inventors:
James D. Wilcox - Pleasanton CA, US
Marca M. Doeff - Hayward CA, US
Assignee:
The Regents of the University of California - Oakland CA
International Classification:
H01M 4/525
US Classification:
2521821
Abstract:
A mixed transition metal oxide is provided described wherein Aluminum is partially substituted for Cobalt in a Li[NiCoMn]Ocomposition wherein the resulting aluminum substituted product Li[NiCoAlMn]Ois less costly than the parent product, is safer to use, and provides enhanced electrochemical performance as a cathode material for use in Lithium-ion based batteries.

Sodium Cobalt Bronze Batteries And A Method For Making Same

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US Patent:
59167106, Jun 29, 1999
Filed:
Oct 11, 1996
Appl. No.:
8/729102
Inventors:
Marca M. Doeff - Hayward CA
Yanping Ma - Berkeley CA
Steven J. Visco - Berkeley CA
Lutgard DeJonghe - Lafayette CA
Assignee:
The Regents of The University of California - Oakland CA
International Classification:
H01M 452
H01M 1040
US Classification:
429304
Abstract:
A solid state secondary battery utilizing a low cost, environmentally sound, sodium cobalt bronze electrode. A method is provided for producing same.

Electrochromic Device Using Mercaptans And Organothiolate Compounds

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US Patent:
54424780, Aug 15, 1995
Filed:
Apr 23, 1992
Appl. No.:
7/872830
Inventors:
Carl M. Lampert - El Sobrante CA
Yan-ping Ma - Berkeley CA
Marca M. Doeff - Hayward CA
Steven Visco - Berkeley CA
Assignee:
The Regents, University of California - Berkeley CA
International Classification:
G02F 1153
US Classification:
359273
Abstract:
An electrochromic cell is disclosed which comprises an electrochromic layer and a composite ion counter electrode for transporting ions. The counter electrode further comprises a polymer electrolyte material and an organosulfur material in which, in its discharged state, the organosulfur material is further comprised of a mercaptan or an organothiolate. In one preferred embodiment, both the electrochromic electrode and the counter electrode are transparent either to visible light or to the entire electromagnetic spectrum in both charged and discharged states. An electrochromic device is disclosed which comprises one or more electrochromic electrodes encased in glass or plastic plates on the inner surface of each of which is formed a transparent electrically conductive film. Electrical contacts, which are in electrical contact with the conductive films, facilitate external electrical connection.

Method For Intercalating Alkali Metal Ions Into Carbon Electrodes

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US Patent:
54436010, Aug 22, 1995
Filed:
May 3, 1993
Appl. No.:
8/055709
Inventors:
Marca M. Doeff - Hayward CA
Yanping Ma - Berkeley CA
Steven J. Visco - Berkeley CA
Lutgard DeJonghe - Lafayette CA
Assignee:
Regents, University of California - Berkeley CA
International Classification:
H01M 618
H01M 462
US Classification:
296235
Abstract:
A low cost, relatively flexible, carbon electrode for use in a secondary battery is described. A method is provided for producing same, including intercalating alkali metal salts such as sodium and lithium into carbon.

Secondary Cell With Orthorhombic Alkali Metal/Manganese Oxide Phase Active Cathode Material

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US Patent:
55589618, Sep 24, 1996
Filed:
Jun 13, 1994
Appl. No.:
8/259658
Inventors:
Marca M. Doeff - Hayward CA
Marcus Y. Peng - Cupertino CA
Yanping Ma - Albany CA
Steven J. Visco - Berkeley CA
Lutgard C. DeJonghe - Lafayette CA
Assignee:
Regents, University of California - Oakland CA
International Classification:
H01M 1038
US Classification:
429224
Abstract:
An alkali metal manganese oxide secondary cell is disclosed which can provide a high rate of discharge, good cycling capabilities, good stability of the cathode material, high specific energy (energy per unit of weight) and high energy density (energy per unit volume). The active material in the anode is an alkali metal and the active material in the cathode comprises an orthorhombic alkali metal manganese oxide which undergoes intercalation and deintercalation without a change in phase, resulting in a substantially linear change in voltage with change in the state of charge of the cell. The active material in the cathode is an orthorhombic structure having the formula M. sub. x Z. sub. y Mn. sub. (1-y) O. sub. 2, where M is an alkali metal; Z is a metal capable of substituting for manganese in the orthorhombic structure such as iron, cobalt or titanium; x ranges from about 0. 2 in the fully charged state to about 0.

All-Solid-State Battery Including A Solid Electrolyte And Methods Of Making Thereof

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US Patent:
20210151790, May 20, 2021
Filed:
Nov 11, 2020
Appl. No.:
17/095483
Inventors:
- Oakland CA, US
Marca Doeff - Hayward CA, US
Guoying Chen - Oakland CA, US
Stephen Sofie - Manhattan MT, US
International Classification:
H01M 10/0562
H01M 4/38
H01M 4/505
H01M 4/525
H01M 4/583
Abstract:
This disclosure provides systems, methods, and apparatus related to an all-solid-state battery including a solid electrolyte. In one aspect, a device includes a first layer of an ionically conducting oxide, a second layer of the ionically conducting oxide disposed on the first layer, and an anode disposed on the second layer of the ionically conducting oxide. The first layer defines through pores having a tortuosity of about 1. The first layer includes transition metal oxide particles and an ionically conducting solid disposed in the through pores. The transition metal oxide particles are a cathode. The first layer and the ionically conducting solid are an electrolyte. The second layer does not define any through pores. The second layer is a separator.
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Marca M Doeff from Hayward, CA, age ~68 Get Report