Title :
Polarization characteristics of electrochemical battery hybrid system
Author :
Jarvis, Louis P. ; Atwater, Terrill B. ; Cygan, Peter J. ; Roberts, Marc P.
Author_Institution :
Res., Dev., & Eng. Center, US Army Commun. Electron. Command, Fort Monmouth, NJ, USA
Abstract :
The polarization characteristics of potential electrochemical components of an unregulated battery hybrid system were studied. The components under study included two lead-acid cells (2 Ah prismatic cell and a 1 Ah cylindrical cell), and a 1.7 Ah cylindrical nickel metal hydride cell as the high power density but low energy density component, and a 30 Ah zinc-air cell as the high energy density but moderate power density component. The prismatic lead-acid cell was found to have more favorable characteristics than the cylindrical design for an electrochemical battery hybrid system. In comparison to the lead-acid system, the nickel-metal hydride cell, because of its greater charge potential and current required, is not a good candidate for an unregulated hybrid system. The zinc-air system has desirable polarization characteristics for the high-energy hybrid component. Overall, under identical load and cut-off voltage, a hybrid system utilizing the zinc-air and lead-acid batteries provided 40% greater energy than a zinc-air/nickel-metal hybrid system, translating to longer operational time
Keywords :
air; electrochemistry; lead acid batteries; nickel; polarisation; secondary cells; zinc; Ni-MH secondary batteries; Pb; Zn; Zn-air secondary cells; cut-off voltage; electrochemical battery hybrid system; energy density; load; operational time; polarization characteristics; power density; prismatic Pb-acid batteries; Batteries; Costs; Logistics; Nickel; Polarization; Power generation; Power supplies; Production; Pulsed power supplies; Voltage;
Conference_Titel :
Applications and Advances, 2001. The Sixteenth Annual Battery Conference on
Conference_Location :
Long Beach, CA
Print_ISBN :
0-7803-6545-3
DOI :
10.1109/BCAA.2001.905152
