Exploring the Effect of Electrolyte Composition on the Charge Capacity of Nickel Hexacyanoferrate Thin Films
Dr. Jennifer Hampton
A problem that plagues many existing methods of clean energy production is energy storage; the batteries used are very expensive and require rare elements such as lithium and platinum. It is therefore essential to develop cheaper, more earth-abundant replacements for the materials currently used. Due to the intermediate position they occupy between traditional batteries and capacitors, electrochemical capacitors may play a role in solving this problem. This project studies Nickel Hexacyanoferrate (NiHCF) thin films, a material that could be used as part of an electrochemical capacitor. The NiHCF thin films were electrochemically synthesized and cycled with cyclic voltammetry in various electrolyte solutions. The material’s charge capacity and diffusion coefficient in each respective electrolyte solution were calculated from the data collected. An enhanced understanding of the interaction between NiHCF thin films and various electrolytes allows the performance of the NiHCF thin films to be optimized. Once optimized, it becomes possible to understand the role NiHCF thin films will play in future methods of energy storage.
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