Battery recycling materials
AssigneeUchicago Argonne, LLC
InventorsZhengcheng ZHANG, Ting-Wei HSU, John T. VAUGHEY
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Abstract
A polymer includes a functional group that is photoswitchable between an open form and a closed form. The polymer may be used to recover a transition metal cation from a solution comprising the transition metal cation.
Claims20
A polymer comprising a spiropyran functional group that is photoswitchable between a spiropyran form and a merocyanine form, a donor-acceptor Stenhouse adduct (DASA) functional group that is photoswitchable between a cyclopentenone and a hexatrienol, or a combination of any two or more thereof.
A method of recovering a transition metal cation from a solution comprising the transition metal cation, the method comprising:
- illuminating a polymer with a functional group with light having a wavelength of about 300 nm to about 450 nm to photoswitch the functional group from a spiropyran functional group to a merocyanine functional group or photoswitch the functional group from a hexatrienol functional group to a cyclopentenone functional group;
- and
- contacting the solution with the polymer comprising the merocyanine functional group or the cyclopentenone functional group, the merocyanine functional group configured to form a complex with the transition metal cation and the cyclopentenone functional group configured to form a complex with the transition metal cation.
A polymer represented by Formula IA or Formula IIA:
- wherein:
- R1 is a group of formula:
- R2 is H or alkyl;
- R3 is H, alkyl, substituted alkyl, alkenyl, alkynyl, halogen, NO2, OCH3, N(R11)2, CN, morpholine, OH, NH2, substituted bicyclic alkyl, or R3 forms an aryl with R4;
- R4 is H, alkyl, substituted alkyl, alkenyl, alkynyl, halogen, NO2, OCH3, N(R11)2, CN, morpholine, OH, NH2, or substituted bicyclic alkyl, or R4 forms an aryl with R3 or R5;
- R5 is H, alkyl, substituted alkyl, alkenyl, alkynyl, halogen, NO2, OCH3, N(R11)2, CN, morpholine, OH, NH2, or substituted bicyclic alkyl, or R5 forms an aryl with R4 or R6;
- R6 is H, alkyl, substituted alkyl, alkenyl, alkynyl, halogen, NO2, OCH3, N(R11)2, CN, morpholine, OH, NH2, or Smailes bstituted bicyclic alkyl,
- or R6 forms an aryl with R5;
- R7 is H, alkyl, substituted alkyl, alkenyl, alkynyl, halogen, NO2, OCH3, N(R11)2, CN, morpholine, OH, NH2, or substituted bicyclic alkyl;
- R10 is C1-C6 alkylenyl;
- R11 is individually C1-C6 alkyl;
- n is 1 to 1000;
- m is 1 to 1000;
- p is 1 to 1000;
- and
- q is 1 to 5.
Dependencies are inferred from the claim text.