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Method for fabricating a polymeric material for use in an energy storage apparatus, a polymeric material and an energy storage apparatus comprising thereof

專利號
US11177504B2
公開日期
2021-11-16
申請人
City University of Hong Kong(HK Kowloon)
發(fā)明人
Chunyi Zhi; Yan Huang
IPC分類
H01M10/0565; H01M12/08; H01M4/92; H01M4/86; H01M4/52; H01M4/38; H01M2/02; H01M4/66; H01M4/88; H01M12/02; C08F120/06; H01M10/42; H01M50/116; H01M12/06
技術領域
pana,zn,battery,batteries,pva,hydrogel,nico,in,with,ions
地域: Kowloon

摘要

A method for fabricating a polymeric material for use in an energy storage apparatus, a polymeric material, and an energy storage apparatus including the polymeric material, where the polymeric material includes a polymer arranged to combine with a plurality of chemical ions so as to form an ion-conducting material, wherein the ion-conducting material is in solid-state.

說明書

TECHNICAL FIELD

The present invention relates to a method for fabricating a polymeric material for use in an energy storage apparatus, a polymeric material and an energy storage apparatus comprising thereof, although not exclusively, to an all solid-state flexible battery device.

BACKGROUND

Electronic or electrical devices usually operate with suitable energy sources connected thereto. Common energy sources may include electrical sockets in a power grid, photovoltaic cells, fuel cells and batteries.

Portable electric devices, especially wearable devices are usually powered by portable energy sources such as batteries. Batteries are usually manufactured with a rigid shell to isolate the chemical materials from the surrounding environment. However, some batteries may include corrosive electrolytes in liquid or aqueous state, and may damage the electric devices or cause injury to users if the electrolyte leaks through the encapsulation when the batteries operate.

SUMMARY OF THE INVENTION

In accordance with a first aspect of the present invention, there is provided a polymeric material for use in an energy storage apparatus, comprising a polymer arranged to combine with a plurality of chemical ions so as to form an ion-conducting material; wherein the ion-conducting material is in solid-state.

In an embodiment of the first aspect, the ion-conducting material is arranged to operate as an electrolyte in the energy storage apparatus.

In an embodiment of the first aspect, the ion-conducting material is mechanically flexible.

In an embodiment of the first aspect, the polymer includes a hydrogel structure.

權利要求

1
The invention claimed is:1. An energy storage apparatus comprising:a pair of electrodes including a zinc anode and a cathode including nickel cobalt hydroxide; andan electrolyte sandwiched between the pair of electrodes;wherein the electrolyte includes a combination of a polyacrylate-based polymer arranged to retain an ionic solution with a plurality of chemical ions;wherein the ionic solution includes zinc acetate and potassium hydroxide;wherein the polyacrylate-based polymer includes a hydrogel structure; andwherein the electrolyte is in solid-state;wherein a quasi-solid electrolyte interface layer is formed based on an electrostatic interaction between electronegatively acrylate groups in the polyacrylate-based polymer and electropositive zinc ions produced from the zinc anode oxidation, the quasi-solid electrolyte interface layer is formed on the zinc anode and at an interface between the zinc anode and the electrolyte including the polyacrylate-based polymer.2. The energy storage apparatus in accordance with claim 1, wherein the electrodes and the electrolyte are mechanically flexible.3. The energy storage apparatus in accordance with claim 1, wherein the polyacrylate-based polymer includes sodium polyacrylate.4. The energy storage apparatus in accordance with claim 3, wherein the quasi-solid electrolyte interface layer is further arranged to suppress a formation of dendrites on an electrode in the energy storage apparatus.5. The energy storage apparatus in accordance with claim 1, wherein the quasi-solid electrolyte interface is formed based on the electrostatic interaction between the electronegatively polarized lone pairs at the oxygen atom of the acrylate groups in the polyacrylate-based polymer and the electropositively charged zinc anode.6. The energy storage apparatus in accordance with claim 1, wherein the quasi-solid electrolyte interface is formed during initial charging and discharging cycles of the energy storage apparatus.7. The energy storage apparatus in accordance with claim 1, wherein the quasi-solid electrolyte interface layer is arranged to immobilize the electropositive zinc ions produced on the zinc electrode based on the electrostatic interaction between the electronegative acrylate group and the electropositive zinc ions.8. The energy storage apparatus in accordance with claim 7, wherein the electropositive zinc ions are immobilized at the quasi-solid electrolyte interface layer.9. The energy storage apparatus in accordance with claim 1, wherein each of the electrodes comprises a carbon cloth arranged to retain an electrode material thereon.10. The energy storage apparatus in accordance with claim 1, wherein the energy storage apparatus is rechargeable.11. An energy storage apparatus comprising:a pair of electrodes including a zinc anode and a cathode including an electrocatalyst of RuO2; andan electrolyte sandwiched between the pair of electrodes;wherein the electrolyte includes a combination of a polyacrylate-based polymer arranged to retain an ionic solution with a plurality of chemical ions;wherein the ionic solution includes zinc acetate and potassium hydroxide;wherein the polyacrylate-based polymer includes a hydrogel structure; andwherein the electrolyte is in solid-state;wherein a quasi-solid electrolyte interface is formed based on an electrostatic interaction between electronegative acrylate groups in the polyacrylate-based polymer and electropositive zinc ions produced from the zinc anode oxidation, the quasi-solid electrolyte interface is formed on the zinc anode and between the zinc anode and the electrolyte including the polyacrylate-based polymer.12. The energy storage apparatus in accordance with claim 11, wherein the electrodes and the electrolyte are mechanically flexible.13. The energy storage apparatus in accordance with claim 11, wherein the polyacrylate-based polymer includes sodium polyacrylate.14. The energy storage apparatus in accordance with claim 13, wherein the polyacrylate-based polymer is further arranged to suppress a formation of dendrites on an electrode in the energy storage apparatus.15. The energy storage apparatus in accordance with claim 11, wherein the quasi-solid electrolyte interface is formed based on the electrostatic interaction between electronegatively polarized lone pairs at the oxygen atom of the acrylate groups in the polyacrylate-based polymer and the electropositively charged zinc anode.16. The energy storage apparatus in accordance with claim 11, wherein the quasi-solid electrolyte interface is formed during initial charging and discharging cycles of the energy storage apparatus.17. The energy storage apparatus in accordance with claim 15, wherein quasi-solid electrolyte interface layer is arranged to immobilize the electropositive zinc ions produced on the zinc electrode based on the electrostatic interaction between the electronegative acrylate group and the electropositive zinc ions.18. The energy storage apparatus in accordance with claim 17, wherein the electropositive zinc ions are immobilized at the quasi-solid electrolyte interface layer.19. The energy storage apparatus in accordance with claim 11, wherein the cathode includes an air electrode.20. The energy storage apparatus in accordance with claim 11, wherein each of the electrodes comprises a carbon cloth arranged to retain an electrode material thereon.21. The energy storage apparatus in accordance with claim 11, wherein the energy storage apparatus is rechargeable.
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