POSITIVE TUBULAR ELECTRODES FOR LEAD ACID BATTERIES WITH 180 Ah Kg-1, SPECIFIC CAPACITY

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POSITIVE TUBULAR ELECTRODES FOR LEAD ACID
BATTERIES WITH 180 Ah Kg-1, SPECIFIC CAPACITY

• J. de Andrade, P. R. Impinnisi, J. T. Tortteli
• Institute of Technology for Development LACTEC
  PR, Brazil

e-mail address juliano2_at_lactec.org.br
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1. Objective

• Feasibility of using nanostructured chemically
  formed PbO2 on tubular electrodes.

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Presentation Structure

• 2. Introduction

• 3. Results and Discussions

• 3.1 Coefficient of PAM Utilization for Different
  Previous Treatment

• 3.2 Deep Discharge/Pulsed Charge Cycles

• 3.3 Potential vs SOC Curves During Pulsed Charge

• 4. Conclusions

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2. Introduction
Lead acid 30 - 40 Wh Kg-1 Ni-MH 40 80 Wh
Kg-1 Li-Ion 150 200 Wh Kg-1
Foam Grids
M.S. Tabaatabaai, et. al., Journal of Power
Sources, 158 (2006) 879-884.
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2. Introduction (continuation)
Chemically formed material pasted on conductive
polyethylene bipolar plates.
H. Karami, et. al., Journal of Power Sources, 164
(2007) 896-904.
Mini tubular electrodes with previously
chemically formed active material. 100 Ah Kg-1
and more than 150 cycles.
M. Bervas, et. al., Journal of Power Sources, 173
(2007) 570-577.
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2. Introduction (continuation)
Nanometric PbO2 chemically synthesized as active
material for tubular electrodes.
A. Caballero, et. al., Journal of Power Sources,
113 (2003) 376.
A. Winsel, et. al., Journal of Power Sources, 30
(1990) 209-226.
?
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3. Results and Discussions
3.1 Coefficient of PAM Utilization for Different
Previous Treatment
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3.1 TEM images of the active material
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3.3 Deep Discharge/Pulsed Charge Cycles
180 Ah g-1 130 cycles
ton toff 500 ms I 1C30 A (2 h for
theoretically complete charge)
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3.4 Potential vs SOC Curves During Pulsed Charge
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PAM Electrical Resistance
D. Pavlov, Journal of Power Sources, 53 (1995)
9-21.
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4. Conclusions

• Positive tubular electrodes can be assembled
  with nanometric PbO2 if suitable methods are used
  to aggregate the particles.

• High utilization coefficient trough cycles.

• Stable capacity, until the number of cycles
  verified.

• Highly resistive electrodes.

• Necessity to evaluate the active mass
  collecting layer in electrodes with previously
  chemically formed nanometric active material.

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Acknowledgements
Financial support - Paranaense Energy Company
COPEL Laboratory structure - Technology
Institute for Development LACTEC