Research/Patents/US 4613551
US 4613551ACTIVE SECRECY ORDER

HIGH RATE METAL OXYHALIDE CELLS

Assignee

HONEYWELL INC., A CORP. OF DE

Filed

Sep 19, 1984

Granted

Sep 23, 1986

Location

GLENSIDE PA US

Abstract

A class of improved catalysts for use in high-rate active-metal non-aqueous cells which show excellent performance enhancing properties are disclosed. These comprise a class of metal porphyrin complexes which catalyze the electrochemical reduction of oxyhalides. The preferred porphyrin compounds include tetraphenyl porphyrin (TPP) and tetramethoxyphenyl porphyrin (TMPP). The preferred complexed metals are cobalt and iron yielding (CoTPP), (FeTPP), CoTMPP) and (FeTMPP), respectively. A polymeric form of TPP complexed with cobalt (CoTPP)n or iron (FeTPP)n is extremely insoluble in the typical Li/SOCl2 cell electrolyte and may be used very successfully in active cell configurations is also disclosed.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Mar 13, 1985

Rescinded

Never rescinded

Duration

41y 3mo — still active

This secrecy order has no recorded rescission date in USPTO records. The order may still be legally in force, or rescission data may not be publicly available.

Inventor

  • 1NARAYAN DODDAPANENI
Back to patent indexSource: USPTO 35 USC §181 secrecy order records