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author:

Huang, Tao (Huang, Tao.) [1] | Ou, Wenjun (Ou, Wenjun.) [2] | Feng, Bo (Feng, Bo.) [3] | Huang, Binbin (Huang, Binbin.) [4] | Liu, Minyi (Liu, Minyi.) [5] | Zhao, Wenchao (Zhao, Wenchao.) [6] | Guo, Yonglang (Guo, Yonglang.) [7] (Scholars:郭永榔)

Indexed by:

EI Scopus SCIE

Abstract:

A cell with tall plates was simulated by two cells and the controlled voltage with time was successfully used to measure the response current-time curves. It indicates that the current in the upper part of the plate is much higher than that in the lower part in early stage of the discharge, but in late stage, it is reversed, especially at high discharge rates. The upper part of the plate has higher capacity and deeper depth of discharge (DOD) so that the active mass degrades and sheds more quickly in cyclic applications. In the initial discharge, the lead sulfate formed at positive plates produces the internal stress and enhances the electric connection among the active mass particles. But the positive active mass only contributes a little to the conductivity of plates. The negative active mass with a bit shrinking but no passivation has better conductivity than the expanded active mass. The higher ohmic polarization of the active mass appears at higher discharge rates, in the upper part of the plates, in the late stage of the discharge, in aged battery, especially for negative plates. (C) 2012 Elsevier B.V. All rights reserved.

Keyword:

Active mass degradation Conductivity Current distribution Ohmic polarization Valve-regulated lead-acid batteries

Community:

  • [ 1 ] [Huang, Tao]Fuzhou Univ, Coll Chem & Chem Engn, Fuzhou 350108, Peoples R China
  • [ 2 ] [Ou, Wenjun]Fuzhou Univ, Coll Chem & Chem Engn, Fuzhou 350108, Peoples R China
  • [ 3 ] [Feng, Bo]Fuzhou Univ, Coll Chem & Chem Engn, Fuzhou 350108, Peoples R China
  • [ 4 ] [Huang, Binbin]Fuzhou Univ, Coll Chem & Chem Engn, Fuzhou 350108, Peoples R China
  • [ 5 ] [Liu, Minyi]Fuzhou Univ, Coll Chem & Chem Engn, Fuzhou 350108, Peoples R China
  • [ 6 ] [Guo, Yonglang]Fuzhou Univ, Coll Chem & Chem Engn, Fuzhou 350108, Peoples R China
  • [ 7 ] [Zhao, Wenchao]Chaowei Power Co Ltd, Changxing 313100, Zhejiang, Peoples R China

Reprint 's Address:

  • 郭永榔

    [Guo, Yonglang]Fuzhou Univ, Coll Chem & Chem Engn, Fuzhou 350108, Peoples R China

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Source :

JOURNAL OF POWER SOURCES

ISSN: 0378-7753

Year: 2012

Volume: 210

Page: 7-14

4 . 6 7 5

JCR@2012

8 . 1 0 0

JCR@2023

ESI Discipline: MATERIALS SCIENCE;

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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