Solid-state fuel battery and method for making solid-state electrolyte

Patent metadata

Field	Value
Publication number	US-11217809-B2
Application number	US-201916420150-A
Country	US
Kind code	B2
Filing date	May 22, 2019
Priority date	Nov 23, 2016
Publication date	Jan 4, 2022
Grant date	Jan 4, 2022

Abstract

A solid-state fuel battery comprises an anode, a cathode spaced from the anode, and a solid-state electrolyte disposed between the anode and the cathode. A material of the solid-state electrolyte is a hydrogen-containing transition metal oxide having a structural formula of ABO x H y , wherein A is one or more of alkaline earth metal elements and rare-earth metal elements, B is one or more of transition metal elements, x is a numeric value in a range of 1 to 3, and y is a numeric value in a range of 0 to 2.5. A method for making the solid-state electrolyte for the solid-state fuel battery is further provided in the present disclosure.

First claim

What is claimed is:

1. A solid-state fuel battery, comprising:
an anode;
a cathode spaced from the anode; and
a solid-state electrolyte disposed between the anode and the cathode;
wherein a material of the solid-state electrolyte is a hydrogen-containing transition metal oxide having a structural formula of ABO x H y , wherein A is one or more of alkaline earth metal elements and rare-earth metal elements, B is transition metal element Co, x is a numeric value in a range of 1 to 3, and y is a numeric value greater than 0 and smaller than or equal to 2.5.

2. The solid-state fuel battery of claim 1 , wherein the alkaline earth metal elements comprise Be, Mg, Ca, Sr, and Ba, and the rare-earth metal elements comprise La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb.

3. The solid-state fuel battery of claim 1 , wherein A is alkaline earth metal element Sr.

4. The solid-state fuel battery of claim 3 , wherein x is 2.5.

5. A method for making the solid-state fuel battery of claim 1 , comprising:
providing the anode;
providing the solid-state electrolyte, comprising:
providing a transition metal oxide having a structural formula of ABO z , wherein z is greater than or equal to 2 and smaller than or equal to 3;
soaking the transition metal oxide with an ionic liquid, wherein the ionic liquid is capable of providing hydrogen ions and oxygen ions under an action of an electric field; and
applying an electric field to the transition metal oxide to cause the hydrogen ions in the ionic liquid to insert into the transition metal oxide;

providing the cathode; and
assembling the anode, the solid-state electrolyte, and the cathode by disposing the solid-state electrolyte between the anode and the cathode.

6. The method of claim 5 , wherein the providing the transition metal oxide comprises:
providing a substrate;
depositing a film of the transition metal oxide having a structural formula of ABO z onto a surface of the substrate; and
forming a first electrode on a surface of the film of the transition metal oxide.

7. The method of claim 6 , wherein the substrate is one of a ceramic substrate, a silicon substrate, a glass substrate, a metal substrate, or a polymer.

8. The method of claim 6 , wherein the film of the transition metal oxide is obtained via an epitaxial growth on the substrate by using a pulsed laser deposition method.

9. The method of claim 6 , wherein the first electrode contacts the film of the transition metal oxide to form a bottom electrode.

10. The method of claim 6 , wherein the applying the electric field to the transition metal oxide comprises:
providing a second electrode and a power source;
spacing the second electrode from the first electrode, and connecting the second electrode and the first electrode electrically and respectively to the power source;
soaking the second electrode with the ionic liquid and applying an electric field in a direction from the second electrode to the first electrode by the power source.

11. The method of claim 6 , wherein a structural form of the solid-state electrolyte comprises a film, a powder, a polycrystal or monocrystal bulk material, a nano-structure, and a composite material.

Assignees

• Univ Tsinghua

Inventors

• Yu Pu
• Lu nian-peng
• Wu Jian
• Zhou shu-yun

Classifications

• H01M8/1246 Primary

  the electrolyte consisting of oxides · CPC title

• H01M8/1233

  with one of the reactants being liquid, solid or liquid-charged · CPC title

• C01P2002/72

  by d-values or two theta-values, e.g. as X-ray diagram · CPC title

• H01M8/12

  operating at high temperature, e.g. with stabilised ZrO2 electrolyte · CPC title

• C01G51/66

  containing alkaline earth metals, e.g. SrCoO3 · CPC title