Negative electrode for lithium batteries
CA 2524016 C · Owner: Universite Montpellier Ii · Inventors: Lippens, Pierre-Emmanuel; Jumas, Jean-Claude; Aldon, Laurent
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An active material for high-voltage negative electrodes (>1V vs. Li) of secondary rechargeable lithium batteries is disclosed. Chemical composition is represented by the general formula Li2+vTi3-WFeXMyM'ZO7-.alpha. where M and M' are metal ions having an ionic radius between 0.5 and 0.8 A and forming an octahedral structure with oxygen, like Ti3+ Co2+, Co3+, Ni2+, Ni3+, Cu2+, Mg2+, A13+ In3+, Sn4+, Sb3+, Sb5+, .alpha. is related to the formal oxidation numbers n and n' of M and M' by the relation 2 .alpha.=v+4w-3x-ny-n'z and the ranges of values are -0.5<=V<=0..5, 0<=w<=0.2 x>0, y+z>0 and x+y+z<=0.7. The , structure is related to that of ramsdellite for all the compositions. The …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed April 26, 2004 and granted May 22, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 26, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 26, 2026.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.