Proton-conducting polymers

High-pressure Applicunt:

coaxial fuel cell

Motorola,

USA

This

fuel cell operates

higher

than previous

and output, Patent

at pressures cells, with

and at lower

number:

significantly

higher

efficiency

Planar fuel cell

waste exhaust,

Applicant:

Motorola,

much

A planar

fuel cell is described

membrane-electrode

cost and less weight.

between

US 6060 188

When

Electrically The

conductive

UCAR

patent

formed

Carbon

seal Technology,

covers an electrically

conductive

of a resin-containing

graphite

between

individual Patent

USA

sheet

the

flow

the

fuel

This

Power

substrate

preformed

web with

Patent

number:

WO

number:

plates

Systems,

of

which

comprises

low electrical

conductive

a

In this reformer natural

pitch

of less than

dynamically

adjustable

the reaction

surface

the

reformer

load.

Patent

WO

00126136

Improved IFC,

patent

number:

number:

WO

Applicant: The

surface

patent

such

fall

a

membrane-

fuel cells.

suitable

fuel

cell

Jiilich,

Germany

to a method

- and

system

covers

electrode

catalyst

the

- in which

catalyst

Patent

number:

Ztek,

system

a

invention

PEM

fuel

relates cell,

laminated

layers

to a frame

which

to

in which

and/or

holes

can

element

is

generally

separator

and the membrane.

Patent

number:

WO

located 00126979

of

process

be integrated.

PEMFC

element

consists

containing polyether

to

the

gas lines

between

the pre-spiral

efficiency

frame the

which like PEK-type

This in the range

central

the stack,

regions or multiple

number:

WO

formed spatially to heat

MCFC of

Germany are produced

double-layer

carbonyl

cobalt

nickel

or from

suitably

Patent

number:

US 6063141

dispersed

by

precursor and

USA includes

which

Co and Ni.

submarine. The fuel processor high pressure, which facilitates

for

of

for

fines

polymers

describes for

Canada novel

number:

organophosphoric

use in fuel cells,

degradation of polymers excellent ionic conductivity. WO

while

which still

prevent providing

00128611

Fuel cell cooler-humidifier Applicant:

is suitable

as a trap

Hydro-QuCbec,

patent

Patent

system for submarines

subsystem,

serves

array

housing. The dead-ended

carbonyl

Applicant: Ballard Power Systems, Canada This fuel cell power plant, including a fuel processing

a compact

tube

Plug

Power,

A cooler-humidifier

Integrated

into

polyether-

13

tubes in a heat-insulated tubes include a hollow

Applicant:

electrodes of

001275

Proton-conducting

materials

oxidation

be processed sulfonated

a

00126983

Friedrichshafen,

can

entrained in the fuel stream. Patent number: WO 001275 18

The MTU

composition

sulfonated aromatic 0.5-70 wt% poly-

gas reformer

IFC,

fuel reformer

The stack can

temperature

WO

Hydrocarbon Applicant:

of stacks that

a polymer

membranes

and 2000°C.

Patent

17

wt% and

benzimidazol,

temperatures,

along

describes 30-95 ketone

ketone. Patent number:

an assembly

20°C

Axiva,

patent

about multiple

US 60635

membrane

The

for a several

The

to

fuel cell and

using

Germany

at different

electrodes

The

to

PEMFCs

cylindrical

fuel cells made

New polymer

between

anodic

Germany

cylindrical

Applicant:

operate

Double-layer

for laminated

be used

patterns

reference outputs. US 60635 16

a spiral wrapped

mass

the fuel

00126978

Siemens,

may

behaviour

Spiral wrapped

onto

whereby

is applied

separated stacks can be employed reactant to a desired temperature.

fuel concentration.

Frame element

predetermined Patent number:

catalyst catalyst

Applicant:

Applicant:

pressed

A low-cost,

USA

is adjusted

WO

is directly

00126982

includes

or ether

a constant

software

the

Patent number:

the active

is also described,

WO

using

number:

electrode

strip using a sieve and then processed

MCFC cathode

Patent

to

current

Applicant: Southwest Research Institute, USA The patent describes a pre-spiral bundle for

membrane-electrode

powder

for a fuel cell

provide

a

layer

in a fuel mixture as fuel,

recognition

cylindrical

as a dry powder.

concentration alcohoi

The

micro-features

fuel cell, where

method

dry

have

00126975

relates

by measuring

Germany

Stacks for ultra-high systems

Forschungszentrum

25%.

using a press.

that

below

an improved

stack is monitored

making

for a PEM

diaphragm

so that

fuel concentration

invention

of

OOl26981

Siemens,

axially

Adjusting

comprise

WO

USA

in the H, feed stream

a

or a proportion

area of less than

assembly

This

for PEM

800 pm,

PEM diaphragm

Applicant:

describes

channels

of less than

further

Patent

production a

USA

assembly

Patent

has

MEA

Applicant: electrode

and/or

not

partial

number:

methanol chamber

can be changed

predetermined

This

reaction

reaction

does

may

the channels.

Motors,

concentration

Pattern

plate) for a fuel cell

800 pm,

within

the diaphragm

reformer

The CO

and/or voltage behaviour patterns from a PEMprobe in contact with the reformate feed stream.

has micro-flow

‘land’

15

feed CO concentration

General

compare

which

at a

bundle.

Germany

rhe

of

leaking

flow-fields

or depth

Applicant:

for reforming

gas,

Applicant:

USA

a width

Improved

US 6060 190

Siemens,

an

conductivity

filler.

with adjustable

Applicant:

assembled,

00126980

is described,

US 60635

Monitoring

assemblies.

is

(and a flow-field

channels

a porous

number:

a PEM

with

The

Reformer surface

3M,

interchannel

Canada

a fuel cell with layer,

and an electrically

Patent

A flow-field

describes

electrode

gases.

Microstructured

US 6060 189

Ballard

patent

fuel or oxidant

Patent

the fuel cell is operated

pressure.

sandwiched

tab is sealed to prevent

Applicant:

MEA with porous electrode substrate Applicant:

cell

a

seal

fuel cells. number;

includes

current-collector

of flexible

field

that

assembly

two

interconnect

Applicant:

USA

while

lower

use in a

is operated the discharge

at of

plate

USA

plate for use in a PEM

stack

assembly functions

is described. This combines the of cooling and humidification within

the stack

assembly,

structure,

simpler

reject heat from Patent

number:

providing manifolding

a more

compact

and

reduced

the fuel cell. US 6066408

Fuel Cells Bulletin No. 27