作为一种新的储电极,石可用于建造实用的高容量海水淡化电池
Do-Hwan Nam1, Kyoung-Shin Choi1
1Department of Chemistry, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States.
Journal of the American Chemical Society
|August 5, 2017
概括
开发了一种新的可充电海水淡化电池,用于化物 (Cl) 存储的 (Bi) 电极和用于 (Na) 存储的酸 (NaTi2(PO4) 3电极. 这种系统显示了海水淡化效率的潜力.
科学领域:
- 电化学
- 材料科学
- 环境工程
背景情况:
- 可充电淡化电池需要能够选择性储存和释放离子的材料.
- 双 (Bi) 泡电极通过转化为双氧化 (BiOCl) 提供 (Cl) 离子储存的潜力.
研究的目的:
- 研究纳米晶体Bi泡电极在可充电海水淡化中的高容量Cl储存的有效性.
- 使用Bi和NaTi2 ((PO4) 3电极构建和评估一种可充电的新型淡化电池.
主要方法:
- 制造一个纳米晶体Bi泡电极.
- 一个可充电的Bi/NaTi2(PO4) 3海水淡化电池组装.
- 在各种盐和淡化条件下进行测试.
- 使用酸性溶液和分裂细胞配置进行优化.
主要成果:
- 这种Bi/NaTi2(PO4)3电池具有可充电的海水淡化能力.
- 鉴定了缓慢的Cl释放动力学和离子储存失衡的局限性.
- 在0.20V的低净输入电位下,达到±1mA cm-2的海水淡化/盐化循环.
- 在酸性溶液中显著改善Cl释放动力学.
结论:
- Bi/BiOCl电极显示出可充电的海水淡化效率和实用性的前景.
- 需要进一步优化以克服动力和静态度的限制.
- 酸性条件和分裂细胞的设计提高了性能.
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