Efficiency of lithium pacemaker batteries as a function of discharge rate and iodine:P2VP cathode composition

Journal Article · Tue Jan 01 00:00:00 EST 1980 · Proc. - Electrochem. Soc.; (United States)

OSTI ID:5292150

Helgeson, W D; Fester, K E

Electrochemical discharge data for Li/I/sub 2/-P2VP pacemaker batteries at various discharge currents show the efficiency of the battery to be a function of discharge current. Depending on the iodine:P2VP cathode composition, the optimum current drain occurs between discharge currents of 100 to 200 /mu/a. As current drain is reduced to pacemaker application drains, 15-25 /mu/a, the efficiency of the Li/I/sub 2/-P2VP battery decreases. The loss in efficiency at pacemaker rates is attributed primarily to self-discharge. The efficiency of Li/I/sub 2/-P2VP batteries is improved by increasing the percent of iodine in the cathode. I/sub 2/:P2VP weight ratios of 10:1, 15:1 and 20:1 have been discharged at various currents and the data indicate that there is significant improvement in efficiency at pacemaker rate in going from 10:1 to 20:1 cathode weight ratio. 2 refs.

• Research Organization: Medtronic Inc, Minneapolis, Minn, USA
• OSTI ID: 5292150
• Journal Information: Proc. - Electrochem. Soc.; (United States), Vol. 80-4
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
62 RADIOLOGY AND NUCLEAR MEDICINE
CARDIAC PACEMAKERS
PRIMARY BATTERIES
EFFICIENCY
USES
IODINE
LITHIUM
POLYMERS
PYRIDINES
ALKALI METALS
AZINES
ELEMENTS
HALOGENS
HETEROCYCLIC COMPOUNDS
METALS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
250904* - Energy Storage- Batteries- Other Applications
550600 - Medicine
250902 - Energy Storage- Batteries- Performance & Testing