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Brickwalls

8,980 Posts.

1978

07/01/20

21:46

Post #: 42272154
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Originally posted by Tiger3152: ↑

While the below patent application is heavy reading it mentions 'cross linked binders' from our patent application.
https://patents.google.com/patent/WO2016168892A1/en
PART of the large Patent application is below.
"The present invention is not restricted to batteries but is equally applicable to capacitors and supercapacitors and other energy storage and conversion systems. In effect, any arrangement employing an electrode may benefit from the inclusion of the metal-ligand complexes as described herein. The same characteristic of enhanced performance as a result of the underlying concepts of metal-ligand complexes also applies.
The metal-ligand complex will be discussed below. The inventors have found that, generally, the metal-ligand complexes can be formed by providing conditions for forming electron donating groups for bridging or otherwise linking or bonding two or more metal ions. One method can be olation of chromium (III) ions by providing a pH below pH 7, preferably about 1 .5 to 6, preferably about 2 to 5 to the composition formed from the contact of the metal-ligand complexes with the surface of the active material.
Various chromium salts such as chromium chloride, chromium nitrate, chromium sulphate, chromium perchlorates, may be used to form the metal-ligand complex. These salts are mixed with an alkaline solution, such as potassium hydroxide, sodium bicarbonate, sodium sulphite and ammonia to form different metal-ligand complexes. Organic reagents that can act as bases such as ethylene diamine, bis(3- aminopropyl)diethylamine, pyridine, imidazoles, can also be used. The size and structure of the metal-ligand complex can be controlled with variations in pH, temperature, solvents and other conditions.
In particular, by changing the metal salts and reaction environment, it is possible to modulate the binding of the metal-ligand complex to oxides (such as in silica) and other solid substrates, and to present a coordination layer to bind other constituents, such as nanoparticles to the surface of the substrate, i.e. additional active material particles or particles of a second or further active material of an electrode. While individual coordination interactions either between the metal-ligand complex and a given active material are relatively weak, the multiplicity of coordination forces leads to a very strong interaction. Individually, each coordination interaction is likely to break as a result of a local stressor at some point. However, it is unlikely that this local stressor will break all of the plural coordination bonds. Therefore, on relaxation, the broken bond, for example to the active material surface, can reform thereby mitigating the stress through future cycles.
The metal-ligand complex can be further stabilised by cross-linking the metal ions with each other to form larger oligomeric metal-ligand complexes. Therefore, in one embodiment, the metal-ligand complex is an oligomeric metal-ligand complex. Such oligomeric metal-ligand complexes can be pre-formed and applied to the active material, or formed in-situ on the surface of the active material. In this case, the ligands are able to form multiple dative bonds with multiple metal ions, to effectively bridge or cross-link the metal ions. That is, the ligand may form dative bonds with two or more metal ions, thereby linking one metal ion to another metal ion."

Our resident patent updater could maybe see where we are with this, as it appears to have been logded in 2016

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Response to examination queries were to be lodged by Boxing day. They have yet to show in the system.

ADO Price at posting: 2.7¢ Sentiment: Hold Disclosure: Held
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