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ERIC Number: EJ1178669
Record Type: Journal
Publication Date: 2018-May
Pages: 6
Abstractor: As Provided
ISSN: ISSN-0021-9584
Heat Evolution and Electrical Work of Batteries as a Function of Discharge Rate: Spontaneous and Reversible Processes and Maximum Work
Noll, Robert J.; Hughes, Jason M.
Journal of Chemical Education, v95 n5 p852-857 May 2018
Many types of batteries power an ever-growing number of devices. Electrochemical devices like batteries and fuel cells can, in principle, exceed Carnot efficiency for energy conversion. In this novel laboratory experiment, students explore the partitioning of the enthalpy change of a battery's electrochemical reaction between useful electrical work and waste heat, ?H = w[subscript elec] + q. Work is measured by monitoring cell potential and current during battery discharge; waste heat evolved at the battery is simultaneously measured in a calorimeter. Results from discharging AA-size "alkaline" batteries are presented. Data for nickel-cadmium, nickel-metal hydride; a D-size, single cell, lead-acid storage battery; and Zn/Ag[subscript 2]O watch batteries are also presented in the Supporting Information.
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A