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Li‐ion battery performance in a convection cell configuration
Author(s) -
Gordon Michael,
Suppes Galen
Publication year - 2013
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.13950
Subject(s) - separator (oil production) , electrolyte , overpotential , anode , cathode , convection , battery (electricity) , chemistry , lithium iron phosphate , nuclear engineering , electrode , lithium ion battery , electrical engineering , materials science , mechanics , engineering , thermodynamics , physics , electrochemistry , power (physics)
The convection battery forces flow of electrolyte through the cathode, anode, and the separator between them, unlike a flow battery where electrolyte cannot cross the separator. The goal is to increase ion fluxes (A/cm 2 ) to realize the benefit of thicker electrodes, lower cost batteries, and reduced charge times. A pump that circulates electrolyte was turned off to create a diffusion control to which the performance of the convection battery was compared. Based on performance at <1.1 V overpotential (based on a 3.1 V open circuit) and similar capacity utilization, the convection battery provided a 5.6‐fold increase in ion flux for these initial studies, increasing flux from 1.6 to 8–10 A/cm 2 . Little capacity fade was observed on the measured discharge cycles (10 cycles). These studies provided an important milestone in the research, development, and validation of a new battery design including cycling studies with lithium iron phosphate chemistry. © 2012 American Institute of Chemical Engineers AIChE J, 59: 1774–1779, 2013