Intermetallic copper-antimony electrodes have been evaluated for decomposition reactions with common liquid electrolytes and as a function of temperature. These studies have reported that exothermic decomposition of lithiated antimony has a lower thermal output than equivalent graphite electrodes. Other thermal studies have briefly considered the low-temperature performance of copper antimonide and other alloy anodes. However, the mechanistic and operational characteristics of these electrodes across the typical operating window of lithium ion batteries has not been reported. As a result, it is unclear how temperature influences the performance of these materials, a necessary requirement for common battery applications. To elucidate the role of copper in stabilizing the material and influencing the alloying pathway, we will present data evaluating Cu<sub>x</sub>Sb alloy nanowire arrays with varying copper content (x = ~0.5-3) to better understand the electrochemical reactions present under varying kinetic and thermal conditions. <br/>

Using nanowire arrays as a sensitive tool for understanding copper-antimony anode materials

253rd National Meeting (2017)

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