In-situ visualization of N₂ evolution in operating direct hydrazine hydrate fuel cell by soft X-ray radiography

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• 作者：Tomokazu Sakamoto ; Phengxay Deevanhxay ; Koichiro Asazawa ; Shohji Tsushima ; Shuichiro Hirai ; Hirohisa Tanaka
• 关键词：In-situ visualization ; Soft X-ray radiography ; Direct hydrazine hydrate fuel cell ; N2 evolution
• 刊名：Journal of Power Sources
• 出版年：15 April, 2014
• 年：2014
• 卷：252
• 期：Complete
• 页码：35-42
• 全文大小：7843 K

文摘

Soft X-ray radiography technique was firstly applied to operating direct hydrazine hydrate fuel cell (DHFCs) in order to visualize N₂ gas behaviors with high spatial and temporal resolution. Two different cells for in-situ visualization of N₂ gas in the DHFCs in in-plane and through-plane direction were designed and fabricated. The utilization of soft X-ray made the visualization of generated N₂ behavior in the DHFC possible with the spatial resolution of 1.5聽渭m and the temporal resolution of 2.0聽s聽frame^鈭?. In the in-plane visualization, the inhomogeneous N₂ gas distribution, suggesting non-uniform reaction distribution in the anode of DHFC, was observed. In the through-plane visualization, N₂ gas accumulation under the rib of anode and discharge to the channel was clearly observed, which are related with cell performance instability.