ELECTRODE ASSEMBLY

The invention provides an electrode assembly comprising a first electrode (1), a second electrode (2) and a main connecting element (3). A first portion of the main connecting element is introduced in the first hole (14) of the first electrode (1) and a second portion of the main connecting element is introduced in the first hole (24) of the second electrode (2), providing a reaction force in the electrode direction (d) so as to keep the first electrode (1) joined to the second electrode (2). The main connecting element (3) is made of a material with a tensile strength of at least 6 times the tensile strength of the first and second electrode, and has a cross section surface which is at least 5 times lower the cross section surface of the first and second electrodes. In particular, a carbon fibre composite material with graphitized carbon resin is used in this main connecting element (3), this element being only in charge of the mechanical joint between electrodes, without any electric role in this joint.