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The data given in this article are related to the research article entitled "High electrocatalytic activity of Rh-WO 3 electrocatalyst for hydrogen evolution reaction under the acidic, alkaline, and alkaline seawater electrolytes (N.-A. Nguyen et al., 2023) [1]. In this work, metal-WO 3 nanocomposites were synthesized and used as electrocatalysts for hydrogen evolution reaction (HER) performance. The morphology and chemical properties of the prepared metal-WO 3 nanocomposites were investigated by using scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS) techniques., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2023 The Authors. Published by Elsevier Inc.)

The data presented in this article are related to the research article entitled "NiRh Nanosponges with Highly Efficient Electrocatalytic Performance for Hydrogen Evolution Reaction (N.-A. Nguyen et al., 2019) [1]. This article reports a facile method to prepare various Ni x Rh y nanosponges while using NaBH 4 as a reducing agent without using any surfactant. The structural and chemical properties of the obtained Ni x Rh y nanosponges are investigated.