An integrated energy storage component comprising: a substrate ; a contoured layer supported by the substrate and comprising a region having a contoured surface, the contoured surface of said region being constituted by: elongated pores extending towards the substrate from the surface of the contoured layer remote from the substrate, or elongated columns extending away from the substrate towards the surface of the contoured layer remote from the substrate; a first M layer extending conformally over the contoured surface of said region, the first M layer being conductive of electrons; a first oxide layer extending conformally over the contoured surface of said region, on the first M layer, said oxide layer having therein ions which are mobile upon application of a potential difference across the first oxide layer; an I layer extending conformally over the contoured surface of said region, on the first oxide layer, said I layer being an electronic-insulator layer made of an ionic conductor; and a second M layer formed on the I layer , the second M layer being conductive of electrons and extending conformally over the contoured surface of said region; wherein the first M layer , first oxide layer , I layer and second M layer constitute an MOIM structure; and the first oxide layer is made of one or more materials selected in the group consisting of TiO 2 , TiO x , TiO x N y , RuO 2 , RuO x NbO x , VO x , WO x , CoO x , or M x Li y P z O t N u , where M is a metal or semiconductor element, Li is lithium, P is phosphorus, O is oxygen, N is nitrogen, 0 < x ≤ 3, 0 < y ≤ 4, 0 ≤ z ≤ 1, 0 < t ≤ 5, and 0 ≤ u ≤ 1. a substrate ; a contoured layer supported by the substrate and comprising a region having a contoured surface, the contoured surface of said region being constituted by: elongated pores extending towards the substrate from the surface of the contoured layer remote from the substrate, or elongated columns extending away from the substrate towards the surface of the contoured layer remote from the substrate; a first M layer extending conformally over the contoured surface of said region, the first M layer being conductive of electrons; a first oxide layer extending conformally over the contoured surface of said region, on the first M layer, said oxide layer having therein ions which are mobile upon application of a potential difference across the first oxide layer; an I layer extending conformally over the contoured surface of said region, on the first oxide layer, said I layer being an electronic-insulator layer made of an ionic conductor; and a second M layer formed on the I layer , the second M layer being conductive of electrons and extending conformally over the contoured surface of said region; wherein the first M layer , first oxide layer , I layer and second M layer constitute an MOIM structure; and the first oxide layer is made of one or more materials selected in the group consisting of TiO 2 , TiO x , TiO x N y , RuO 2 , RuO x NbO x , VO x , WO x , CoO x , or M x Li y P z O t N u , where M is a metal or semiconductor element, Li is lithium, P is phosphorus, O is oxygen, N is nitrogen, 0 < x ≤ 3, 0 < y ≤ 4, 0 ≤ z ≤ 1, 0 < t ≤ 5, and 0 ≤ u ≤ 1. <EOS>