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1. WO2014168671 - MAGNESIUM-BASED ENERGY STORAGE SYSTEMS AND METHODS HAVING IMPROVED ELECTROLYTES

Publication Number WO/2014/168671
Publication Date 16.10.2014
International Application No. PCT/US2014/013371
International Filing Date 28.01.2014
IPC
H01M 10/056 2010.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
056characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
H01M 10/054 2010.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
054Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
CPC
H01M 10/054
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
054Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
H01M 10/0568
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
056characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
0564the electrolyte being constituted of organic materials only
0566Liquid materials
0568characterised by the solutes
Y02E 60/10
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
60Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
10Energy storage using batteries
Applicants
  • BATTELLE MEMORIAL INSTITUTE [US]/[US]
Inventors
  • LIU, Tianbiao
  • LI, Guosheng
  • LIU, Jun
  • SHAO, Yuyan
Agents
  • GARDNER, Gillian
Priority Data
13/858,76408.04.2013US
13/937,51509.07.2013US
14/084,07519.11.2013US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MAGNESIUM-BASED ENERGY STORAGE SYSTEMS AND METHODS HAVING IMPROVED ELECTROLYTES
(FR) SYSTÈMES ET PROCÉDÉS DE STOCKAGE D'ÉNERGIE À BASE DE MAGNÉSIUM AYANT DES ÉLECTROLYTES AMÉLIORÉS
Abstract
(EN)
Electrolytes for Mg-based energy storage devices can be formed from non-nucleophilic Mg2+ sources to provide outstanding electrochemical performance and improved electrophilic susceptibility compared to electrolytes employing nucleophilic sources. The instant electrolytes are characterized by high oxidation stability (up to 3.4 V vs Mg), improved electrophile compatibility and electrochemical reversibility (up to 100% coulombic efficiency). Synthesis of the Mg2+ electrolytes utilizes inexpensive and safe magnesium dihalides as non-nucleophilic Mg2+ sources in combination with Lewis acids, MRaX3-a (for 3≥ a≥ 1). Furthermore, addition of free-halide-anion donors can improve the coulombic efficiency of Mg electrolytes from nucleophilic or non-nucleophilic Mg2+ sources.
(FR)
Selon l'invention, des électrolytes destinés à des dispositifs de stockage d'énergie à base de Mg peuvent être constitués de sources de Mg2+ non nucléophiles pour fournir une performance électrochimique exceptionnelle et une susceptibilité électrophile améliorée par rapport aux électrolytes employant des sources nucléophiles. Les électrolytes selon la présente invention sont caractérisés par une stabilité à l'oxydation élevée (jusqu'à 3,4 V vs Mg), une compatibilité électrophile améliorée et une réversibilité électrochimique (jusqu'à 100 % en termes de rendement coulombien). La synthèse des électrolytes de Mg2+ utilise des dihalogénures de magnésium peu coûteux et sûrs en tant que sources de Mg2+ non nucléophiles en association avec des acides de Lewis, MRaX3-a (pour 3 ≥ a ≥ 1). D'autre part, l'ajout de donneurs sans anion halogénure permet d'améliorer le rendement coulombien des électrolytes de Mg à partir de sources de Mg2+ nucléophiles ou non nucléophiles.
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