Membranes, membrane-electrode assemblies for fuel cells

Membranes, membrane-electrode assemblies for fuel cells

expanded porous and a screen material expanded protects PTFE. screen PTFE by impinging of the gas filtration bonded The the expanded damag...

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expanded porous

and a screen material

expanded

protects

PTFE.

screen

PTFE

by impinging

of the gas filtration

bonded

The

the expanded

damage

to the

during

that is durable,

ions (calculated

as PO;‘-),

possesses good structural

against

0.2-3

g/l zinc ions, optionally

and

accelerators.

operation

phosphating

system.

Invmtar~:

after membrane

M. Debes

preferably

Filter assembly with a flexible housing

and/or

filtration,

selective

The solution

when

Patent number: WO 00/648

includes

formed

two filter

housing

by an injection-moulding

element

is flexible

and

process.

includes

such

between

as a filter

membrane,

is sealed

flanges of two elements.

the mating

The fluid filter assembly

is capable

and

the filtration

expanding

depending which

during

on

the

composition

passes through

the filter

assembly

assembly

of collapsing process,

of the

it. A method and

systems

the

Deoxygenation

A process

17

I? Kuhm 2000

concerns

for removing

oxygen

fed

apparatus

from

water.

which

cell with flow-by

an electrically formed

The water

cathode,

comprises electrode

bed with at least

The counter-electrode

at a distance cell

membrane,

invention,

and

from

has

which

at least

is used

is carbon-based

symmetrical. porous

It is formed

carbon

berween

layer,

properties.

macro-porous, substrate.

which

membrane

a cathode

with a thickness

comprises (another

as diluent).

substrate.

The

obtained

is then air-dried. is deposited vacuum-heated

in used of

membrane

The dried polymeric

on the substrate, of

the

polymer

and

is

such and

of the latter into a micro-porous

Inventors: T. Alvarez Centeno, Publicirtion date: 26 October

Waste-water phosphation

2000

treatment

the overflow rinsing

relates from

water

to a method

a phosphating afrer

phosphation.

force and length

on

invention

preparation ferably

describes

for further

The

use about

a liquid

membrane

and

differential

at a

the desired

upstream

The concentrate

side

of the

is [hen diluted

under

supercritical

products

The

conditions

solvent.

the

Patent number: WO 00166723 2000

condensation

removed.

protective

for example

pervaporation

or a vapour

process.

The invention

The

solvent

may

be a

also relates to a coating

containing

a condensation

product

with this process.

R.J.H.

Hoenen,

an

Also

membrane

is formed

I. Wosgien,

W.

earlier.

I?J. Dekkers

employed

2000

comprising

uses of amorphous

patent

chemical

provides

application

details which

electro-

uses amorphous

Cutlip,

a solution

of the

conductive

membrane

layer as described

structures,

a composite

membrane

membrane,

current

solid and

the film may

membrane,

in a membrane-electrode anode,

or the may

be

assembly structure cathode

or and

collectors. 00/66652

Inveztors: J.M. Fenton, of an

The

by casting

ionically

Patent number: MO

Applicant: DuPont, USA This

optlonal

conductive

polymer.

cast composite

composite

R.A.

or a

is a composite

support

with a protective

The

is

The

and ionically

to form a film. Optionally,

be combined

A.I. Stankiewicz,

the

binder

fine powder

an ionically

and

polymer,

within The

binder

disclosed

comprising

a binder

polymeric

polymer.

hygroscopic

the

solid, noble

dispersed a binder.

ion-exchange

solid,

membrane

support

porous

layer comprises

combination.

binder

a

to

composite

conductive

combination

and at

adjacent The

comprises

conductive

solid,

layer

and preferably

by-

process,

Pronk,

prorective

is disclosed,

membrane

membrane.

or

preferably

The selective

srrucrure

a composite

and an ionically

matrix,

of

separation

obrained

one

metal

by a membrane

composition

least

matrix,

is effected

ketone.

comprises

out

removal permeation

membrane

which

pre-

is carried

in the presence

The

are selectively

for

product,

process

or

processing.

Inventor: J.T Leonard

membrane

a process

of a condensation

a polyester.

Electrochemical fluoro-polymers and/or

adding

pressure the

devices

typically

of less than

include

is

volume

of time to achieve

concentration

cast composite

for treating bath

steps

composite

Publirdtion date: 2 November

during

of liquids

a constant

A composite

of condensation

Bakker, S. Stevelmans,

Applicant: Henkel KG, Germany The invention

Preparation product

Inventors: I.J.W. Weultjes, A.B. Fuertes Arias

which

Publication dnte: 9 November

of 0.1-0.5

Patent numbrr: WO 00164574

occur.

Patent number: WO 00162885

plates

above an ultrafiltration

applying

process

small

Applz’caut: University of Connecticut, USA

a supercritical

is deposited

on the surface

to a temperature

decomposition

carbon-film

The

dissolved

polymeric

substrate

transformation

of steps.

solvent was occasionally solution

to the

2000

The

homogeneously

between

The

for

Inventor: K. Vuorilehto

Applicant: DSM, The Netherlands

is

pl. The

removed

to the water.

carbon

a number

500

volume

and/or

such as small concentrator

volumes

one

ion-

steps.

multiple-well

starting

proteins

for

any need for one or

Membranes, membrane-electrode assemblies for fuel cells

added

carbon

the

purifying

is

suited

ions are

of

resin)

The polymeric

and expanded

on a (flat)

and

force

is particularly

suited

apphcatlons,

membrane.

a thickness has molecular

or

a constant

driving

Patent number: WO 001648 16 Publication date: 2 November

micro-

which

According

ceramic-type

preparation

(phenolic

methanol

that

has

It is supported

or tubular, The

polymer

slowly

is flat and

2 and 3 pm, and which

screening

the

and

by a thick

This process

cathode.

is arranged

the anode.

not substantially

which

for the

the

ciones Cientificas, Spain membrane

three-

is made up of at least one anode,

the cathode

the

one

which

cm is used, and conducriviry-improving

invention,

an

particulate

into a particle

the

is

comprises

at least

conductive

Furthermore,

for

a process and apparatus

Applic~nrzt:Consejo Superior de Investigato this

disclosed.

using

as the

diafiltration

exchange

According

differential

particularly

is arranged

Preparing carbon membranes separating gases

for ultrafiltrarion

pressure

more

cathode

2000

of water

electrochemical

2000

Ultrafiltration using constant pressure differential

This invention

one flat surface. A.R.

R.E. Perez date: 26 October

the

Applicant: Fortum Power & Heat Oy, Finland

an

complicated at undesirably

G. Rajendran

acids, often without

into

long,

Publication date: 9 November

nucleic

material

are also described.

Pubhtion

the ion-exchanger to supplement

Publication date: 2 November

dimensional

of making

for using

I’ment wmber: WO 00162831 Inventors:D.R. Calhoun, R. Murphey, Wons,

fluid

avoids

and

It is produced

high temperatures.

concentrating

port. A filter

integrity.

ions.

a peripheral

flange with a fluid communicating medium,

Each

which

membraneuniform

of the fluoro-polymers

Inventors: S. Kumar, is

nickel

by a method sincering

a

Patent number: WO 00167336

upstream

solution.

I nventors: J.W. Brouwer,

elements

water

assembly

Applicant: Millipore, USA

phosphating

as blood

rinsing

ion-exchanger

can be reused

This fluid filter assembly

fluids such

the

ion-exchanger,

for zinc and/or

Applicant: Baxter International, USA for filtering

metal ions

or without The

produced

is regenerated

other

acidic

filtration.

out with

phosphation,

over a slightly

membrane

2000

After

bath overflow

is guided

Publication date: 26 October

providing

electrode

carried

3-50

Patent number: WO 00/62900 R. Giannetta,

fluoro-polymers,

containing

been

phosphating

g/l phosphate

an

solution

having

acidic aqueous

material

surface

particles

phosphation

(PTFE)

polytctrafluoroethylene

membrane,

R.H. Kunz. M.B.

J.-C. Lin

Pubuhlicution date: 9 November

2000

Membrane Technology No. 131