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1. (WO2017151151) PROCESSES FOR FORMING COORDINATION COMPLEXES CONTAINING MONOSULFONATED CATECHOLATE LIGANDS

Pub. No.:    WO/2017/151151    International Application No.:    PCT/US2016/021248
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Tue Mar 08 00:59:59 CET 2016
IPC: H01M 8/18
H01M 10/056
H01M 10/42
Applicants: LOCKHEED MARTIN ADVANCED ENERGY STORAGE, LLC
Inventors: HUMBARGER, Scott, Thomas
MILLARD, Matthew
Title: PROCESSES FOR FORMING COORDINATION COMPLEXES CONTAINING MONOSULFONATED CATECHOLATE LIGANDS
Abstract:
Coordination complexes can have a metal center with at least one unsubstituted catecholate ligand and at least one monosulfonated catecholate ligand or a salt thereof bound thereto. Some coordination complexes can have a formula of DgTi(L1)x(L2)y, in which D is a counterion selected from NH4+, Li+, Na+, K+, or any combination thereof; g ranges between 2 and 6; L1 is an unsubstituted catecholate ligand; L2 is a monosulfonated catecholate ligand; and x and y are non-zero numbers such that x+y = 3. Methods for synthesizing such coordination complexes can include providing a neat mixture of catechol and a sub-stoichiometric amount of sulfuric acid, heating the neat mixture to form a reaction product containing catechol and a monosulfonated catechol or a salt thereof, and forming a coordination complex from the reaction product without separating the catechol and the monosulfonated catechol or the salt thereof from one another.