Lead-acid battery and manufacture method
AssigneeArcactive Limited
InventorsStuart MCKENZIE, Shane CHRISTIE
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Abstract
Lead-acid batteries or cells, electrodes and bipolar plates for the same, and methods of manufacturing the same are provided. The lead acid batteries comprise a positive and/or negative electrode having a specific pore size diameter distribution. The pore size diameter distribution may comprise: a ratio of a volume of pores having a pore size diameter greater than 20 μm to a total pore volume of at least 15%; or a volume of pores having a pore size diameter greater than 20 μm of at least 0.020 ml/g.
Claims27
A lead-acid battery or cell, wherein the battery or cell is a non-gel lead-acid battery or cell or absorptive glass mat (AGM) lead-acid battery or cell, comprising:
- a positive electrode comprising a positive active material (PAM);
- a negative electrode comprising a negative active material (NAM);
- and
- a separator capable of immobilising an electrolyte disposed between the positive and negative electrodes,
- the positive electrode and negative electrode each having a pore size diameter distribution measured by mercury porosimetry,
- wherein the pore size diameter distribution of the positive and/or negative electrode comprises a ratio of a volume of pores having a pore size diameter greater than 20 μm to a total pore volume of at least 15%.
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An electrode for a lead-acid battery or cell comprising an active material and having a pore size diameter distribution measured by mercury porosimetry, wherein the pore size diameter distribution comprises a ratio of a volume of pores having a pore size diameter greater than 20 μm to a total pore volume of at least 15%.
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Dependencies are inferred from the claim text.