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Arunkumar Tiruvannamalai

from Andover, MA
Age ~43

Arunkumar Tiruvannamalai Phones & Addresses

  • Andover, MA
  • Waltham, MA
  • Monrovia, CA
  • Columbus, OH
  • Austin, TX

Publications

Us Patents

Fluoride Ion Battery Compositions

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US Patent:
20120164541, Jun 28, 2012
Filed:
Oct 14, 2011
Appl. No.:
13/274240
Inventors:
Isabelle Darolles - Azusa CA, US
Cedric M. Weiss - Azusa CA, US
Maksudul M. Alam - Azusa CA, US
Arunkumar Tiruvannamalai - Azusa CA, US
Simon Christopher Jones - Azusa CA, US
Assignee:
Contour Energy Systems, Inc. - Azusa CA
International Classification:
H01M 10/02
H01M 4/60
H01M 4/58
US Classification:
429326, 429199, 429200, 429201, 429339, 429341, 429324, 429340, 4292181, 429338, 429337, 429342, 429345, 429213
Abstract:
A lithium-free, anion based charge transport electrochemical system that uses fluoride ion transporting electrolytes, including ionic liquids, with and without various additives to improve performance, is described. The fluoride ion transporting electrolyte can be wholly or partly an ionic liquid that is typically liquid at temperatures less than 200 degrees Celsius. In other embodiments, electrolytes that remain liquid at less than 100 degrees Celsius are useful.

Fluoride Ion Battery Electrolyte Compositions

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US Patent:
20110143219, Jun 16, 2011
Filed:
Dec 9, 2010
Appl. No.:
12/964702
Inventors:
Cedric M. Weiss - Pasadena CA, US
Simon Christopher Jones - Los Angeles CA, US
Arunkumar Tiruvannamalai - Monrovia CA, US
Isabelle Darolles - Los Angeles CA, US
Maksudul M. Alam - Glendora CA, US
Sohrab Hossain - Tucson AZ, US
Assignee:
Contour Energy Systems, Inc. - Azusa CA
International Classification:
H01M 10/05
H01M 10/02
US Classification:
429338, 429201, 429200, 429339, 429324, 429342, 429199
Abstract:
A fluoride ion battery includes a substantially lithium-free anode and cathode. At least one of the anode or cathode contains fluorine, and a substantially lithium-free liquid electrolyte is used for charge transport. The electrolyte is liquid at temperatures below about 200 degrees Celsius, and can be formed from an organic-soluble fluoride salt dissolved in selected classes of solvents.

Localized High-Salt-Concentration Electrolytes Containing Longer-Sidechain Glyme-Based Solvents And Fluorinated Diluents, And Uses Thereof

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US Patent:
20200328475, Oct 15, 2020
Filed:
Aug 30, 2019
Appl. No.:
16/556958
Inventors:
- Singapore, SG
Arunkumar Tiruvannamalai - Waltham MA, US
Leran Zou - Arlington MA, US
Mackenzie King - Essex MA, US
Hong Gan - Miller Place NY, US
Qichao Hu - Arlington MA, US
Assignee:
SES Holdings Pte. Ltd. - Singapore
International Classification:
H01M 10/0569
H01M 10/052
H01M 10/0567
H01M 10/0568
C07C 317/28
Abstract:
Localized high-salt-concentration electrolytes each containing a salt, a glyme as a solvent, and a fluorinated diluent. In some embodiments, the glyme has a chemical formula R—(O—CH—CH)—O—R, wherein n=1 to 4 and at least one of Rand Ris a hydrocarbon sidechain having at least 2 carbon atoms and wherein the salt is soluble in the glyme. In some embodiments, the fluorinated diluent is selected from the group consisting of a fluorinated glyme and a fluorinated ether. In some embodiments, the salt includes an alkali-metal salt. In some embodiments, the salt includes an alkali-earth-metal salt. The salt may include a perfluorinated sulfonimide salt. Electrochemical devices that include localized high-salt-concentration electrolytes of the present disclosure are also disclosed.

Fluoride Ion Battery Electrolyte Compositions

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US Patent:
20160181665, Jun 23, 2016
Filed:
Mar 1, 2016
Appl. No.:
15/057918
Inventors:
- Pasadena CA, US
Simon Christopher JONES - Los Angeles CA, US
Arunkumar TIRUVANNAMALAI - Monrovia CA, US
Isabella DAROLLES - Los Angeles CA, US
Maksudul M. ALAM - Glendora CA, US
Sohrab HOSSAIN - Tucson AZ, US
International Classification:
H01M 10/0568
C07D 295/037
H01M 10/0525
Abstract:
A fluoride ion battery includes a substantially lithium-free anode and cathode. At least one of the anode or cathode contains fluorine, and a substantially lithium-free liquid electrolyte is used for charge transport. The electrolyte is liquid at temperatures below about 200 degrees Celsius, and can be formed from an organic-soluble fluoride salt dissolved in selected classes of solvents.

Electrochemical Devices For Use In Extreme Conditions

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US Patent:
20160099474, Apr 7, 2016
Filed:
Dec 14, 2015
Appl. No.:
14/967451
Inventors:
- Sugar Land TX, US
Richard Frerker - Cheltenham, GB
Iain Michael Cooper - Sugar Land TX, US
Catherine Danielle Busser - Le Plessis Robinson, FR
Arunkumar Tiruvannamalai - Monrovia CA, US
Hsu-Feng Cheng - Arcadia CA, US
Joseph Ralph Wong - South Pasadena CA, US
Simon Jones - Los Angeles CA, US
International Classification:
H01M 6/16
H01M 4/583
H01M 4/38
Abstract:
An electrochemical device, such as a battery or power source, provides improved performance under stringent or extreme conditions. Such an electrochemical device for use in high temperature conditions may include at least a cathode, a lithium-based anode, a separator, and an ionic liquid electrolyte. This device also may include a current collector and housing that are electrochemically inert with respect to other components of the device. This electrochemical device may operate at temperatures ranging from 0 to 180, 200, 220, 240, and 260 C.
Arunkumar Tiruvannamalai from Andover, MA, age ~43 Get Report