In the second of a three-part feature, technical editor Dr Mike McDonagh digs into the technical foundations of the tubular plate, to chart its evolution and examine how the product fares amid the changing demands of the modern battery market. As explained in the first part of this series, the principle advantages of a tubular plate design are the increased surface area of the active material, the reduced conducting path for electrons from the AM to the spine current collector and the use of a tube which holds the AM in place during cycling. In part two we will concentrate on the materials and manufacturing processes that are unique to this design. I also show how the constructional materials and production methods of tubular battery are important in determiningthe performance, quality and cost effectiveness of this design.
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