Unlock instant, AI-driven research and patent intelligence for your innovation.

Fuel cell having patterned solid proton conducting electrolytes

A fuel cell, proton conduction technology, applied in solid electrolyte fuel cells, fuel cells, battery electrodes, etc., can solve problems such as inability to meet

Inactive Publication Date: 2009-07-15
MOTOROLA MOBILITY LLC
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the conventional planar fuel cell approach cannot meet the 1-2 cc volume requirement for a fuel cell in a fuel cell / battery hybrid power supply for cellular phone applications

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fuel cell having patterned solid proton conducting electrolytes
  • Fuel cell having patterned solid proton conducting electrolytes
  • Fuel cell having patterned solid proton conducting electrolytes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The following detailed description is merely exemplary in nature and is not intended to limit the invention or the application and uses of the invention. Furthermore, there is no intention to be bound by any theory presented in the preceding background of the invention or the following detailed description.

[0017] The main components of a micro fuel cell device are a proton-conducting electrolyte that separates the reactant gases in the anode and cathode regions, an electrocatalyst that facilitates the oxidation and reduction of gas species on the anode and cathode of the fuel cell, providing a uniform flow to the anode The gas diffusion region of the reactant gas path to the cathode and the current collector for the efficient collection and transport of electrons to a load across the fuel cell. Other optional components are ionomers intermixed with the electrocatalyst and / or conductive supports for the electrocatalyst particles to help improve performance. In the fa...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to View More

Abstract

In a method for patterning a solid proton conducting electrolyte (22, 60) for a micro fuel cell a first side (30, 63) of electrolyte (22, 60) is patterned to increase the surface area, which is coated with an electrocatalyst (33, 66), providing an electrical conductor (20) to the first side (22, 60), and an electrical conductor (15, 16) to a second side (19) of the electrolyte (22, 60). One exemplary embodiment comprises depositing a solid proton conducting electrolyte (60) over a substrate (12), patterning the electrolyte (60) to form a plurality of pedestals (28), each having an anode side adjacent a anode region (42) and a cathode side adjacent a cathode region (43), coating the anode (42) and cathode (43) sides with an electrocatalyst (33), providing a first electrical conductor (15, 16) to the anode side (42); and a second electrical conductor (20) to the cathode side (43).

Description

technical field [0001] The present invention relates generally to fuel cells, and more particularly to methods of fabricating fuel cells by patterning solid proton-conducting electrolytes. Background technique [0002] Rechargeable batteries are currently the primary power source for cellular telephones and various other portable electronic devices. The energy stored in the battery is limited. This is determined by the energy density (Wh / L) of the storage material and its chemistry and the volume of the battery. For example, for a typical Li-ion cell phone battery with an energy density of 250 Wh / L, a 10 cc battery can store 2.5 Wh of energy. Depending on the application, the energy can last from hours to days. Recharging always requires access to an outlet. The limited amount of stored energy and frequent recharging are major annoyances with batteries. Therefore, there is a need for longer lasting, easily rechargeable solutions for cellular phone power supplies. One a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/00H01M8/10H01M4/86
CPCH01M4/8605H01M4/98H01M8/1076Y02E60/521H01M8/1039H01M8/1023H01M4/8885H01M8/1006Y02P70/50Y02E60/50
Inventor 拉姆库马尔·克里希南威廉·J·达乌克谢尔乔达里·R·科里佩拉
Owner MOTOROLA MOBILITY LLC