• Materials for fuel cell membranes

      Baroutaji, Ahmad; Arjunan, Arun; Alaswad, Abed; Praveen, Ayyappan S; Wilberforce, Tabbi; Abdelkareem, Mohammad A; Olabi, Abdul-Ghani (Elsevier, 2020-10-22)
      Proton-exchange membrane fuel cells (PEMFC) continue to receive a great deal of interest as an energy source for many practical applications and in particular to those related to the automotive industry. Among the different research directions, developing inexpensive and high-performing membrane materials for PEMFC has been identified as a key approach for reducing the cost of the technology, increasing its applications, and satisfying the other technical and economic demands of the consumers. The membranes’ material should possess a combination of complex features including high proton conductivity; good mechanical, thermal, and chemical stability, low gas permeability, and moderate prices. Despite being commercialized and widely used, Nafion-based membranes feature many drawbacks and researchers are still working actively to find alternative membrane materials that can provide an adequate balance between the performance and cost. In this article, an overview of the different PEMFC membrane materials is given. The properties, performance, and challenges of the membrane materials were compared and the future research directions were outlined.
    • Nanocrystalline Mg2Ni for hydrogen storage

      Baroutaji, Ahmad; Arjunan, Arun; Ramadan, Mohamad; Alaswad, Abed; Achour, Hussam; Abdelkareem, Mohammad A; Olabi, Abdul-Ghani (Elsevier, 2020-12-14)
      Hydrogen continues to receive increased attention as the most promising energy carrier enabling sustainable and eco-friendly energy systems. Despite the various advantages of hydrogen fuel, storing hydrogen in a light-weight and compact form is the barrier towards the commercialization of the hydrogen technologies. Thus, the availability of a reliable, inexpensive, safe and efficient hydrogen storage technology is crucial to support and foster the transition to a hydrogen-powered world. Among the possible hydrogen storage solutions, storing hydrogen in the solid-state, such as metal hydrides, is the safest and most attractive method for on-board hydrogen storage. The metal hydrides can release highly pure hydrogen, via a low-pressure endothermic process, suitable to be used directly in the hydrogen fuel cell devices. This article presents an overview of using Mg and Mg2Ni-based alloys for solid-state hydrogen storage. A review of the hydrogen storage technologies is presented first and then the most recent developments on Mg and Mg2Ni-based hydrogen storage materials are highlighted.