Publication date: 10th April 2024
Composite electrodes are revolutionizing ceramic electrochemical cells, including both oxygen-ion and proton conductor types, by combining materials with complementary properties. This synergy improves the efficiency, durability, and overall performance of these electrochemical devices. A key innovation is the hybrid oxygen electrode made from a layered double perovskite and a single-layered perovskite. This combination enhances both the surface oxygen exchange and the bulk oxygen-ion diffusion, leading to better performance in both oxygen reduction and evolution reactions. Incorporating nano-micro composite structures further enhances these benefits. These structures combine nanoscale particles with microscale frameworks, improving ionic conductivity and mechanical stability. The synergy between nano and micro components facilitates efficient ion transport and robust structural integrity, even under high operational stress. The benefits of composite electrodes are clear. The composite electrode enhances both power generation and hydrogen production efficiencies while reducing the operating temperatures. The manufacturing process for these electrodes is straightforward and cost-effective, involving wet-chemistry synthesis and controlled calcination. Moreover, composite electrodes demonstrate exceptional stability under high current densities and extended use, proving their potential for long-term, efficient energy solutions. This advancement represents a major step forward in developing scalable, efficient, and sustainable energy technologies.
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