新しい塩化物貯蔵電極としてのビスマウトは,実用的な高容量脱塩電池の構築を可能にします
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
まとめ
塩化物 (Cl) 貯蔵のためのビスムート (Bi) 電極と,ナトリウム (Na) 貯蔵のためのナトリウムチタナート (NaTi2(PO4) 3電極を用いた新しい充電式脱塩セルが開発されました. このシステムは海水の効率的な 淡水化の可能性を示しています
科学分野:
- 電気化学
- 材料科学
- 環境工学
背景:
- 再充電式脱塩セルには,選択的なイオン貯蔵と放出を可能にする材料が必要です.
- ビスムート (Bi) 泡の電極は,ビスムート酸化塩化物 (BiOCl) に変換することにより,塩化物 (Cl) イオン貯蔵の可能性を備えています.
研究 の 目的:
- 再充電式脱塩における高容量Cl貯蔵のためのナノ結晶Bi泡電極の有効性を調査する.
- BiとNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi3とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNaTi3とNaTi2とNaTi2とNaTi3とNaTi2とNaTi3とNaTi2とNaTi2とNaTi2とNaTi2とNaTi2とNa2POとNa2POとNa2
主な方法:
- ナノクリスタルのBi泡の電極の製造.
- Bi/NaTi2 ((PO4) 3) の充電式脱塩セルを組み立てました.
- さまざまな塩分と塩分除去条件下での試験
- 酸性溶液と分裂した細胞構成を用いた最適化.
主要な成果:
- Bi/NaTi2(PO4)3電池は充電式脱塩能力を示した.
- 制限として,遅いCl放出運動とイオン貯蔵の不均衡を特定した.
- 0.20Vの低純電位入力で±1 mA cm-2で脱塩/塩化サイクルを達成した.
- 酸性溶液では Cl- 放出運動が著しく改善された.
結論:
- Bi/BiOCl電極は,効率的で実用的な充電式海水淡水化に期待されています.
- 運動およびステキオメトリックの制限を克服するためにさらなる最適化が必要である.
- 酸性環境と細胞分裂は 性能を高めます
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