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Title: Electrochromic salts, solutions, and devices

Patent ·
OSTI ID:908351

Electrochromic salts. Electrochromic salts of dicationic viologens such as methyl viologen and benzyl viologen associated with anions selected from bis(trifluoromethylsulfonyl)imide, bis(perfluoroethylsulfonyl)imide, and tris(trifluoromethylsulfonyl)methide are produced by metathesis with the corresponding viologen dihalide. They are highly soluble in molten quarternary ammonium salts and together with a suitable reductant provide electrolyte solutions that are used in electrochromic windows.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
W-7405-ENG-36
Assignee:
The Regents of the University of California (Los Alamos, NM)
Patent Number(s):
7,064,212
Application Number:
10/177,400
OSTI ID:
908351
Country of Publication:
United States
Language:
English

References (3)

Room-Temperature Molten Salts Based on the Quaternary Ammonium Ion journal October 1998
Low Temperature Molten Viologens-Phase Transition and Electrochemical Properties journal January 1999
Electrochromic and Electrochemichromic Materials and Phenomena book January 1976