Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Separator – retainer or spacer insulating structure
Reexamination Certificate
2011-04-12
2011-04-12
Yuan, Dah-Wei (Department: 1727)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Separator, retainer or spacer insulating structure
C429S186000, C548S300400, C548S123000
Reexamination Certificate
active
07923142
ABSTRACT:
There are provided a novel onium salt and a method for optimizing the interface of a negative electrode by the use of the novel onium salt and/or a conventional onium salt. Such a method is characterized in that an electrolyte comprising novel 2,2,2-trifluoro-N-(trifluoromethanesulfonyl)acetamide•tetraethyl ammonium salt is made to intervene between a negative electrode and a positive electrode in an electrochemical device having the constitution: a negative electrode|an electrolyte|a positive electrode, thereby constructing an electrode structure in the electrochemical device, and applying a voltage between the negative electrode and the positive electrode so as for the negative electrode to have a potential of −1 V to −5 V in terms of the potential relative to a reference electrode of I−/I3−, thereby forming a passive-state layer comprising a decomposition product of the above electrolyte or salt on the surface of the above negative electrode.
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Matsumoto et al., Room temperature ionic liquids based on small aliphatic ammonium cations and asymmetric amide anions, Jul. 2, 2002, Chemical Communications 2002, pp. 1726-1727.
Matsumoto et al., Physical and electrochemical properties of room temperature molten salt based on aliphatic onium cations and asymmetric amide anion, 2002, Electrochemical Society Proceedings, vol. 2002-19, pp. 1057-1065.
Kawahara Takeo
Matsumoto Hajime
Matsunaga Tomonori
Martin Angela J.
National Institute of Advanced Industrial Science and Technology
Ostrolenk Faber LLP
Tokuyama Corporation
Yuan Dah-Wei
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