Electrodes comprising metal support structures and methods for making the same are generally described. In certain embodiments, the electrodes described herein comprise a metal porous support structure, and an electrode active material at least partially contained within the pores of the porous support structure. In some embodiments, the electrical conductivity of the porous support structure material can ensure that electrons are efficiently transferred through and/or out of the electrode (e.g., to a current collector and/or to an external circuit). The pores within the porous support structure can ensure, in certain embodiments, that the electrode active material is accessible to the electrolyte, thereby enhancing performance of the electrochemical cell in which the electrode is used.