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US 12,551,856 B2Granted
Lithium ion conductor-polymer-ceramic membrane
AssigneeElectraLith Pty Ltd
InventorsHuanting Wang, Nhi Sa Nguyen, Zhouyou Wang
Life of this patent
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Abstract
An ion permeable membrane for selective permeation of a target ion, preferably lithium, through the membrane, the membrane comprising a target ion permeable composite comprises a target ion permeable ceramic and at least one organic polymer associated with the target ion permeable ceramic.
Claims18
A membrane for target ion separation, the membrane comprising:
- a target ion permeable polymer-ceramic composite material comprising:
- a target ion permeable ceramic and at least one target ion permeable organic polymer associated with the target ion permeable ceramic,
- wherein the membrane allows selective permeation of the target ion through the membrane;
- wherein the target ion permeable polymer-ceramic composite has a microstructure comprising ceramic particle dense upper layers or regions having reduced porosity characterized by narrower interparticle spaces, and less ceramic particle dense bottom layers or regions having increased porosity characterized by wider interparticle spaces;
- and
- wherein the membrane is produced using a solvent evaporation-induced phase separation (SEIPS) process.
3 more elements
A membrane for lithium target ion separation from an aqueous solution of ions, the membrane comprising:
- a lithium target ion porous support substrate supporting a lithium target ion permeable polymer-ceramic composite material;
- wherein the target ion permeable polymer-ceramic composite material is Li1.3Al0.3Ti1.7(PO4)3 (LATP) ceramic associated with polyvinylidene fluoride (PVDF), wherein the PVDF is present in the target ion permeable polymer-ceramic composite at a concentration (wt %) ratio of about 10:1 (ceramic:polymer);
- wherein the target ion permeable polymer-ceramic composite has a microstructure comprising ceramic particle dense upper layers or regions having reduced porosity characterized by narrower interparticle spaces, and less ceramic particle dense bottom layers or regions having increased porosity characterized by wider interparticle spaces;
- and
- wherein the membrane is produced using a solvent evaporation-induced phase separation (SEIPS) process.
2 more elements
A process for manufacturing an electrodialysis membrane comprising the steps of:
- Preparing a solution of a target ion permeable ceramic material, and at least one organic polymer, in a volatile organic solvent;
- Solution casting the solution onto a mould of predetermined shape;
- and
- Evaporating the solvent to form a membrane of a target ion permeable polymer-ceramic composite material;
- Wherein the step of evaporating the solvent involves evaporation via a solvent evaporation-induced phase separation (SEIPS) process;
- Wherein the target ion permeable polymer-ceramic composite has a microstructure comprising ceramic particle dense upper layers or regions having reduced porosity characterized by narrower interparticle spaces, and less ceramic particle dense bottom layers or regions having increased porosity characterized by wider interparticle spaces.
3 more elements
An electrodialysis method of selective lithium ion separation from brine or lithium ion separation from lithium containing solution from a lithium recycling method, comprising the step of applying a voltage to a membrane comprising:
- a target ion permeable polymer-ceramic composite material comprising:
- a target ion permeable ceramic and at least one target ion permeable organic polymer associated with the target ion permeable ceramic,
- wherein the membrane allows selective permeation of the target ion through the membrane or to a membrane comprising:
- a lithium target ion porous support substrate supporting a lithium target ion permeable polymer-ceramic composite material;
- wherein the target ion permeable polymer-ceramic composite material is Li1.3Al0.3Ti1.7(PO4)3 (LATP) ceramic associated with polyvinylidene fluoride (PVDF), wherein the PVDF is present in the target ion permeable polymer-ceramic composite at a concentration (wt %) ratio of about 10:1 (ceramic:polymer);
- wherein the target ion permeable polymer-ceramic composite has a microstructure comprising ceramic particle dense upper layers or regions having reduced porosity characterized by narrower interparticle spaces, and less ceramic particle dense bottom layers or regions having increased porosity characterized by wider interparticle spaces;
- and
- wherein the membrane is produced using a solvent evaporation-induced phase separation (SEIPS) process.
5 more elements
An electrodialysis stack comprising a membrane comprising:
- a target ion permeable polymer-ceramic composite material comprising:
- a target ion permeable ceramic and at least one target ion permeable organic polymer associated with the target ion permeable ceramic,
- wherein the membrane allows selective permeation of the target ion through the membrane or to a membrane comprising:
- a lithium target ion porous support substrate supporting a lithium target ion permeable polymer-ceramic composite material;
- wherein the target ion permeable polymer-ceramic composite material is Li1.3Al0.3Ti1.7(PO4)3 (LATP) ceramic associated with polyvinylidene fluoride (PVDF), wherein the PVDF is present in the target ion permeable polymer-ceramic composite at a concentration (wt %) ratio of about 10:1 (ceramic:polymer), wherein the target ion permeable polymer-ceramic composite has a microstructure comprising ceramic particle dense upper layers or regions having reduced porosity characterized by narrower interparticle spaces, and less ceramic particle dense bottom layers or regions having increased porosity characterized by wider interparticle spaces;
- and wherein the membrane is produced using a solvent evaporation-induced phase separation (SEIPS) process;
- disposed between a pair of anion exchange membranes.
4 more elements
Dependencies are inferred from the claim text.