Reversible ketone hydrogenation and dehydrogenation for aqueous organic redox flow batteries

doi:10.1126/science.abd9795

GSTDTAP > 气候变化

DOI	10.1126/science.abd9795
	Reversible ketone hydrogenation and dehydrogenation for aqueous organic redox flow batteries
	Ruozhu Feng; Xin Zhang; Vijayakumar Murugesan; Aaron Hollas; Ying Chen; Yuyan Shao; Eric Walter; Nadeesha P. N. Wellala; Litao Yan; Kevin M. Rosso; Wei Wang
	2021-05-21
发表期刊	Science
出版年	2021
英文摘要	In a flow battery, catholyte and anolyte are stored in separate tanks, and pumps are used to circulate the fluids into a stack with electrodes separated by a thin membrane. Such batteries are ideal for large-scale grid storage applications; however, suitable redox molecules are currently limited. Feng et al. used “molecular engineering” to modify an inexpensive precursor (9-fluorenone) as the basis for an organic-based redox flow battery (see the Perspective by Hu and Liu). The authors tested a series of variant molecules in a redox flow battery in which the reactions involve reversible ketone hydrogenation and dehydrogenation in an aqueous electrolyte. These reactions have advantageous features, including two-electron redox and operation in air and at elevated temperatures (50°C), that are more suitable for real-world applications. Science , abd9795, this issue p. [836][1]; see also abi5911, p. [788][2] Aqueous redox flow batteries with organic active materials offer an environmentally benign, tunable, and safe route to large-scale energy storage. Development has been limited to a small palette of organics that are aqueous soluble and tend to display the necessary redox reversibility within the water stability window. We show how molecular engineering of fluorenone enables the alcohol electro-oxidation needed for reversible ketone hydrogenation and dehydrogenation at room temperature without the use of a catalyst. Flow batteries based on these fluorenone derivative anolytes operate efficiently and exhibit stable long-term cycling at ambient and mildly increased temperatures in a nondemanding environment. These results expand the palette to include reversible ketone to alcohol conversion but also suggest the potential for identifying other atypical organic redox couple candidates. [1]: /lookup/doi/10.1126/science.abd9795 [2]: /lookup/doi/10.1126/science.abi5911
领域	气候变化 ; 资源环境
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引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/328826
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Ruozhu Feng,Xin Zhang,Vijayakumar Murugesan,et al. Reversible ketone hydrogenation and dehydrogenation for aqueous organic redox flow batteries[J]. Science,2021.
APA	Ruozhu Feng.,Xin Zhang.,Vijayakumar Murugesan.,Aaron Hollas.,Ying Chen.,...&Wei Wang.(2021).Reversible ketone hydrogenation and dehydrogenation for aqueous organic redox flow batteries.Science.
MLA	Ruozhu Feng,et al."Reversible ketone hydrogenation and dehydrogenation for aqueous organic redox flow batteries".Science (2021).