Abrégé

High purity MnO and zinc oxide may be efficiently recovered from alkaline and/or carbon zinc batteries using a process involving the treatment of the crushed batteries with an alkali hydroxide to produce insoluble manganese oxides and an alkali zincate solution. Zinc oxide is obtained by reacting the zinc solution with carbon dioxide or an acid such as a mineral acid and furnacing. The manganese oxides are converted to MnO by furnacing under an inert atmosphere.

Classes IPC  ?

• H01M 6/52 - Récupération des parties utiles des éléments ou batteries usagés
• H01M 10/54 - Récupération des parties utiles des accumulateurs usagés

Abrégé

The present invention related to a method for the recycling of batteries by recovering and regenerating the cathode material. The method includes the steps of isolating the cathode particles and then regenerating the cathode particles for use in the same type of battery.

Classes IPC  ?

• H01M 6/52 - Récupération des parties utiles des éléments ou batteries usagés
• H01M 10/54 - Récupération des parties utiles des accumulateurs usagés

Abrégé

There is provided an improvement for capacitors having activated carbon electrodes by the use of an electrolyte solution containing a carbonate of the formula RO(C=O)OR1 and a conductive salt such as a lithium salt or a quaternary ammonium salt at a concentration of from 0.6 to 3 mol/1.

Classes IPC  ?

• H01M 10/052 - Accumulateurs au lithium
• H01M 10/056 - Accumulateurs à électrolyte non aqueux caractérisés par les matériaux utilisés comme électrolytes, p. ex. électrolytes mixtes inorganiques/organiques
• H01M 10/05 - Accumulateurs à électrolyte non aqueux
• H01G 11/60 - Électrolytes liquides caractérisés par le solvant
• H01G 11/58 - Électrolytes liquides
• H01G 11/30 - Électrodes caractérisées par leur matériau
• H01G 9/035 - Électrolytes liquides, p. ex. matériaux d'imprégnation

Abrégé

The present invention provide novel compounds and electrolyte solutions which can be used in capacitors and lithium batteries and which have a liquidus range of from about -65 to about 171 degrees C.

Classes IPC  ?

• H01M 10/0566 - Matériaux liquides
• H01G 9/035 - Électrolytes liquides, p. ex. matériaux d'imprégnation
• H01G 11/60 - Électrolytes liquides caractérisés par le solvant
• C07C 68/06 - Préparation des esters de l'acide carbonique ou de l'acide formique halogéné à partir de carbonates organiques
• C07C 68/08 - PurificationSéparationStabilisation
• C07C 69/96 - Esters de l'acide carbonique ou de l'acide formique halogéné

Abrégé

The invention relates to the low temperature recovery of lead oxide (PbO) from lead acid battery paste through the preparation of at least one lead salt such as a lead carboxylate from the battery paste and the conversion of the at least one lead salt to PbO. The methods described herein may comprise treating the spent lead acid battery paste with a first base to remove sulfates and to form a mixture of lead oxides; treating the lead oxide mixture with an acid and a reducing agent to form at least one lead salt; and treating the lead salt with a second base under a CO2-free atmosphere at an elevated temperature to form PbO.

Classes IPC  ?

• H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
• H01M 10/06 - Accumulateurs au plomb

Abrégé

The present invention relates to the recovery of high purity litharge from spent lead acid battery paste at a low temperature which does not produce sulfur dioxide. In the process lead acetate or other lead salt is produced which is converted to high purity litharge by precipitation with a base.

Classes IPC  ?

• C01G 21/06 - Protoxyde de plomb [PbO]
• B09B 3/00 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif

Abrégé

There is provided a process for recovering AB5 alloy from spent nickel hydride storage batteries and/or their cells without thermal melting or dissolving the AB5 alloy. The process comprises a step of partially dissolving the Ni(OH)2 and separating AB5 alloy still containing lanthanum metal.

Classes IPC  ?

• H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
• B09B 3/00 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif

Abrégé

An electrochemical device having an operational voltage up to 4.5 V in combination with a high concentration of an electrolyte salt consisting of a tetrafluoroborate salt and a eutectic of two solvents in which ethylene carbonate is one and an improved carbon electrode a preferred electrochemical device is a capacitor.

Classes IPC  ?

• H01G 9/00 - Condensateurs électrolytiques, redresseurs électrolytiques, détecteurs électrolytiques, dispositifs de commutation électrolytiques, dispositifs électrolytiques photosensibles ou sensibles à la températureProcédés pour leur fabrication

Abrégé

Carbon electrodes for a capacitor having conditioned carbon elements in combination with a high concentration of an electrolyte tetrafluoroborate salt and a non-aqueous aprotic solvent to provide an operational voltage up to 4.5 V and capacitors used with the carbon electrodes.

Classes IPC  ?

• H01G 9/00 - Condensateurs électrolytiques, redresseurs électrolytiques, détecteurs électrolytiques, dispositifs de commutation électrolytiques, dispositifs électrolytiques photosensibles ou sensibles à la températureProcédés pour leur fabrication