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Title: Nickel-metal hydride battery development. Final technical report

Abstract

Rechargeable batteries are used as the power source for a broad range of portable equipment. Key battery selection criteria typically are weight, volume, first cost, life cycle cost, and environmental impact. Rechargeable batteries are favored from a life cycle cost and environmental impact standpoint over primary batteries. The nickel-metal hydride (Ni-MH) battery system has emerged as the battery of choice for many applications based on its superior characteristics when judged on the above criteria against other battery types. In most cases commercial Ni-MH batteries are constructed with coiled electrodes in cylindrical metal containers. Electro Energy, Inc. (EEI) has been developing a novel flat bipolar configuration of the Ni-MH system that offers weight, volume, and cost advantages when compared to cylindrical cells. The unique bipolar approach consists of fabricating individual flat wafer cells in conductive, carbon-filled, plastic face plates. The individual cells contain a nonconductive plastic border which is heat sealed around the perimeter to make a totally sealed unit cell. Multi-cell batteries are fabricated by stacking the individual wafer cells in such a way that the positive face of one cell contacts the negative face of the adjacent cell. The stack is then contained in an outer housing with endmore » contacts. The purpose of this program was to develop, evaluate, and demonstrate the capabilities of the EEI Ni-MH battery system for consumer applications. The work was directed at the development and evaluation of the compact bipolar construction for its potential advantages of high power and energy density. Experimental investigations were performed on various nickel electrode types, hydride electrode formulations, and alternate separator materials. Studies were also directed at evaluating various oxygen recombination techniques for low pressure operation during charge and overcharge.« less

Publication Date:
Research Org.:
Electro Energy, Inc., Danbury, CT (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
90195
Report Number(s):
DOE/ER/14379-T1
ON: DE95015502; TRN: AHC29522%%32
DOE Contract Number:  
FG02-93ER14379
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Jun 1995
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; METAL-METAL BATTERIES; DESIGN; PROGRESS REPORT; HYDRIDES; NICKEL; DEMONSTRATION PROGRAMS

Citation Formats

NONE. Nickel-metal hydride battery development. Final technical report. United States: N. p., 1995. Web. doi:10.2172/90195.
NONE. Nickel-metal hydride battery development. Final technical report. United States. doi:10.2172/90195.
NONE. Thu . "Nickel-metal hydride battery development. Final technical report". United States. doi:10.2172/90195. https://www.osti.gov/servlets/purl/90195.
@article{osti_90195,
title = {Nickel-metal hydride battery development. Final technical report},
author = {NONE},
abstractNote = {Rechargeable batteries are used as the power source for a broad range of portable equipment. Key battery selection criteria typically are weight, volume, first cost, life cycle cost, and environmental impact. Rechargeable batteries are favored from a life cycle cost and environmental impact standpoint over primary batteries. The nickel-metal hydride (Ni-MH) battery system has emerged as the battery of choice for many applications based on its superior characteristics when judged on the above criteria against other battery types. In most cases commercial Ni-MH batteries are constructed with coiled electrodes in cylindrical metal containers. Electro Energy, Inc. (EEI) has been developing a novel flat bipolar configuration of the Ni-MH system that offers weight, volume, and cost advantages when compared to cylindrical cells. The unique bipolar approach consists of fabricating individual flat wafer cells in conductive, carbon-filled, plastic face plates. The individual cells contain a nonconductive plastic border which is heat sealed around the perimeter to make a totally sealed unit cell. Multi-cell batteries are fabricated by stacking the individual wafer cells in such a way that the positive face of one cell contacts the negative face of the adjacent cell. The stack is then contained in an outer housing with end contacts. The purpose of this program was to develop, evaluate, and demonstrate the capabilities of the EEI Ni-MH battery system for consumer applications. The work was directed at the development and evaluation of the compact bipolar construction for its potential advantages of high power and energy density. Experimental investigations were performed on various nickel electrode types, hydride electrode formulations, and alternate separator materials. Studies were also directed at evaluating various oxygen recombination techniques for low pressure operation during charge and overcharge.},
doi = {10.2172/90195},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {6}
}