The Resurgence of Hydrogen Depolarized Anodes: A Catalyst for Change in Industrial Electrochemistry

Abstract

This presentation delves into the remarkable history of Hydrogen Depolarized Anodes (HDAs) and their relevance to modern industrial electrochemistry. HDAs were originally developed in the early 1970s, but their use has been confined to fuel cell technology and power generation. In the wake of a growing green hydrogen economy and the escalating price of precious metal catalysts, this technology is now emerging as a useful tool to boost the energy efficiency and lower both capital and operational costs of electrified chemical manufacturing processes. Our discussion recounts the evolution of HDA technology, from its conceptual beginnings to its current role as an innovative solution in electrochemical processes.The recent renaissance of HDAs is driven largely by economic and environmental factors. As chemical industries strive to electrify their processes, they also grapple with the rising cost of conventional anode materials. The increasing affordability and availability of hydrogen presents HDAs as a viable and efficient alternative. This shift is not just about cost-saving; it's about embracing a technology that aligns with the principles of sustainability and circular economy.We will explore various applications where HDAs are making a significant impact, such as in the manufacturing of acids and bases, the production of metals such as iron, copper, and zinc, and more experimental processes such as cement production. These examples not only demonstrate the versatility of HDAs, but also underscore their potential in achieving higher energy efficiency than conventional technologies and reducing environmental footprint of a range of industrial operations.Furthermore, our talk will illuminate how HDAs are a stepping stone towards a broader adoption of hydrogen as a cornerstone of industrial electrochemistry. The implementation of HDA technology is more than an innovation; it's a transformative step forward, signaling a new era in chemical manufacturing where sustainability and efficiency go hand in hand.