Joule heating rate need not equal I2R, where R is the Ohmic resistance: The case of voltaic cells Academic Article

abstract

• The electrolyte within a charging or discharging voltaic cell, carrying current [Formula Presented] has time-dependent carrier densities. Therefore the energy conservation argument that equates the total rate of Joule heating P to the rate of decrease of electrical energy is inappropriate because it neglects changes in chemical energy. Explicit study of two systems (the lead-acid cell and the Zn-Cu cell) shows that the Joule heating resistance [Formula Presented] differs from the Ohmic resistance [Formula Presented][Formula Presented] is the voltage drop across the electrolyte). [Formula Presented] can be greater than or less than unity. [Formula Presented] involves only the current-carrying ions, whereas [Formula Presented] involves all of the ions. 1999 The American Physical Society.

authors

• Saslow, Wayne

published proceedings

• Physical Review E

author list (cited authors)

• Saslow, W. M.

citation count

• 6

complete list of authors

• Saslow, Wayne M

publication date

• February 1999

publisher

• American Physical Society (APS)  Publisher

published in

• Physical Review E  Journal

keywords

• 7 Affordable And Clean Energy

Digital Object Identifier (DOI)

• 10.1103/physreve.59.r1343

start page

• r1343

end page

• r1346

volume

• 59

issue

• 2

user-defined tag

• 7 Affordable and Clean Energy