Accession Number:

ADD020213

Title:

A Hybrid Electrochemical Energy Source

Descriptive Note:

Patent Application, Filed 5 May 2005

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Report Date:

2005-05-05

Pagination or Media Count:

13.0

Abstract:

It is a general purpose and objective of the present invention to establish an electrochemical energy source for use in an underwater environment that utilizes the hydrogen byproduct of a lithium anode battery, such as the lithium water battery, and by doing so increases the coulombic efficiency of the lithium anode battery and eliminates the noise associated with venting the hydrogen, resulting in a quiet operation energy source with high energy density. This objective is accomplished by combining a lithium water battery with a proton exchange membrane fuel cell. The reaction between the lithium and water in the battery will generate electrical energy and hydrogen H2 gas. The hydrogen gas will then be collected and used as the fuel component for the proton exchange membrane fuel cell. The resulting hybrid electrochemical energy source has a low current density, long endurance, and a higher energy density for the entire system over the sum of its individual components.

Subject Categories:

  • Electrochemical Energy Storage

Distribution Statement:

APPROVED FOR PUBLIC RELEASE