Exide Technologies Gmbh

Harald Niepraschk

Friedrich Kramm

Olaf Sielemann

Satoru Yaegashi

Georg Meckl

Peter Nemec-Losert

Disclosed herein is a composition for use in a negative active material in a valve regulated lead-acid battery, including a carbon material having a BET surface area from 150 m/g to 2000 m/g and having a D-value greater than 5 &#x3bc;m with the amount of carbon material ranging from 0.1 wt % to 1.5 wt % based on the total weight of the composition. Also disclosed herein is a valve regulated lead-acid battery, including a positive plate, a negative plate, a separator, and an electrolyte disposed in a container with a valve, the negative plate including a substrate of lead or a lead alloy and a negative active material of a composition including a carbon material having a BET surface area from 150 m/g to 2000 m/g and having a D-value greater than 5 &#x3bc;m, the amount of carbon material ranging from 0.1 wt % to 1.5 wt % based on the total weight of the composition.

Composition that enhances deep cycle performance of valve-regulated lead-acid batteries filled with gel electrolyte

A separator () for electrode plates () in gel storage batteries having two substantially rectangular layers (') of a flat separator material, which layers come to lie in mutually superposed relationship. In order to provide less expensive separators for the separation of plate electrodes in gel storage batteries, which have a low electrical resistance and which afford additional protection for the edges and side surfaces and at the same time permit homogenous gel filling of the storage battery, the invention proposes that the two layers of separator material are connected together at least portion-wise in the region of their edges, forming a casing or pocket for the introduction of an electrode plate and a method and battery employing the separator.

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Buedingen, Germany

Harald Niepraschk