Energy efficiency of a concentration gradient flow battery at elevated temperatures

详细信息    查看全文

• 作者：W.J. van Egmond^a ; ^b ; ^{janwillem.vanegmond@wetsus.nl} ; U.K. Starke^b ; M. Saakes^b ; C.J.N. Buisman^a ; ^b ; H.V.M. Hamelers^b
• 关键词：Concentration gradient flow battery ; Large scale electricity energy storage ; Stationary batteries ; Reverse electrodialysis ; Charge/discharge efficiency ; Aqueous electrolyte
• 刊名：Journal of Power Sources
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：340
• 期：Complete
• 页码：71-79
• 全文大小：1689 K
• 卷排序：340

文摘

A Concentration Gradient Flow Battery (CGFB) is operated at elevated temperatures. Instantaneous mass transport and (dis)charge efficiency of a CGFB is analysed. An efficient operating range with maximum depth of discharge for a GCFB is identified. Water transport causes hysteresis and a decrease in energy capacity and efficiency. At increasing temperatures osmosis increases but electro-osmosis is unaffected.