Conductive, anticorrosive magnesium titanium oxide material
An electrolyzer system includes an anticorrosive, conductive material including a first oxide having oxygen vacancies and a formula (Ia): MgTi 2 O 5-δ (Ia), where δ is any number between 0 and 3 including a fractional part denoting the oxygen vacancies; and a second oxide having a formula (II): Ti a O b (II), where 1<=a<=20 and 1<=b<=30, optionally including a fractional part, the first and second oxides of formulas (Ia) and (II) forming a polycrystalline matrix within the electrolyzer system.
1 . An electrolyzer system comprising:
an anticorrosive, conductive material including
a first oxide having oxygen vacancies and a formula (Ia):
MgTi 2 O 5-δ (Ia),
where δ is any number between 0 and 3 including a fractional part denoting the oxygen vacancies; and
a second oxide having a formula (II):
Ti a O b (II),
where 1<=a<=20 and 1<=b<=30, optionally including a fractional part,
the first and second oxides of formulas (Ia) and (II) forming a polycrystalline matrix within the electrolyzer system.
2 . The system of claim 1 , wherein the polycrystalline matrix is porous.
3 . The system of claim 2 , wherein the porous polycrystalline matrix is structured as a catalyst support.
4 . The system of claim 1 , wherein Mg/Ti ratio is about 0.01-0.8.
5 . The system of claim 1 further comprising a porous transport layer (PTL) including the anticorrosive, conductive material.
6 . An electrochemical cell material comprising:
an anticorrosive, conductive polycrystalline matrix having:
a first metal oxide having oxygen vacancies and a formula (Ib):
Mg 1−x Ti 2+x O 5-δ (Ib),
where
δ is any number between 0 and 3 including a fractional part denoting the oxygen vacancies, and 0<=x<=1; and
a second metal oxide having a formula (II):
Ti a O b (II),
where 1<=a<=20 and 1<=b<=30, optionally including a fractional part,
the first and second oxides forming a polycrystalline matrix.
7 . The material of claim 6 , wherein the material is a porous microfiber.
8 . The material of claim 6 , wherein the matrix comprises sintered fibers.
9 . The material of claim 6 , wherein the fractional part in a, b, or both is included.
10 . The material of claim 6 , wherein the matrix forms a surface layer of a component in the electrochemical cell.
11 . The material of claim 6 , wherein the electrochemical cell is an electrolyzer.
12 . An electrochemical cell component comprising:
an anticorrosive, conductive, nonstoichiometric material having a first metal oxide having oxygen vacancies and a formula (Ib):
Mg 1−x Ti 2+x O 5-δ (Ib),
where
δ is any number between 0 and 3 including a fractional part denoting the oxygen vacancies, and 0<=x<=1,
the Mg/Ti ratio in the material of the formula (Ib) is about 0.01 to about 0.8.
13 . The component of claim 12 , wherein the component is a bipolar plate.
14 . The component of claim 12 , wherein the component is a porous transport layer material.
15 . The component of claim 12 , wherein the electrochemical cell is an electrolyzer.
16 . The component of claim 12 , wherein the material has excess Ti such that 0<x<=1.
17 . The component of claim 12 , wherein the component is a catalyst support.
18 . The material of claim 6 , wherein 0<x<1.
19 . The material of claim 6 , wherein the Mg/Ti ratio in the material is about 0.01 to about 0.8.
20 . The material of claim 6 , wherein the polycrystalline matrix includes nanofibers with a diameter of about 10 to 250 nanometers.