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Cyclohexanehexone with Ultrahigh Capacity as Cathode Materials for Lithium‐Ion Batteries
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2019-04-17 , DOI: 10.1002/anie.201902185 Yong Lu 1 , Xuesen Hou 1 , Licheng Miao 1 , Lin Li 1 , Ruijuan Shi 1 , Luojia Liu 1 , Jun Chen 1
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2019-04-17 , DOI: 10.1002/anie.201902185 Yong Lu 1 , Xuesen Hou 1 , Licheng Miao 1 , Lin Li 1 , Ruijuan Shi 1 , Luojia Liu 1 , Jun Chen 1
Affiliation
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Organic carbonyl compounds show potential as cathode materials for lithium‐ion batteries (LIBs) but the limited capacities (<600 mA h g−1) and high solubility in electrolyte restrict their further applications. Herein we report the synthesis and application of cyclohexanehexone (C6O6), which exhibits an ultrahigh capacity of 902 mA h g−1 with an average voltage of 1.7 V at 20 mA g−1 in LIBs (corresponding to a high energy density of 1533 Wh kg−1
). A preliminary cycling test shows that C6O6 displays a capacity retention of 82 % after 100 cycles at 50 mA g−1 because of the limited solubility in high‐polarity ionic liquid electrolyte. Furthermore, the combination of DFT calculations and experimental techniques, such as Raman and IR spectroscopy, demonstrates the electrochemical active C=O groups during discharge and charge processes.
中文翻译：
超高容量环己烷己酮作为锂离子电池的正极材料
有机羰基化合物有潜力作为锂离子电池（LIB）的正极材料，但容量有限（<600 mA h g -1）和在电解质中的高溶解度限制了它们的进一步应用。本文中我们报道了环己烷己酮（C 6 O 6）的合成和应用，该环己烷己酮在LIB中显示出902 mA h g -1的超高容量，在20 mA g -1下的平均电压为1.7V。 1533 Wh kg -1
）。初步的循环测试表明，在50 mA g -1下进行100次循环后，C 6 O 6的容量保持率为82％由于在高极性离子液体电解质中的溶解度有限。此外，DFT计算和实验技术（如拉曼光谱和红外光谱）的结合证明了在放电和充电过程中的电化学活性C = O基团。
更新日期：2019-04-17
). A preliminary cycling test shows that C6O6 displays a capacity retention of 82 % after 100 cycles at 50 mA g−1 because of the limited solubility in high‐polarity ionic liquid electrolyte. Furthermore, the combination of DFT calculations and experimental techniques, such as Raman and IR spectroscopy, demonstrates the electrochemical active C=O groups during discharge and charge processes.
中文翻译：
超高容量环己烷己酮作为锂离子电池的正极材料
有机羰基化合物有潜力作为锂离子电池（LIB）的正极材料，但容量有限（<600 mA h g -1）和在电解质中的高溶解度限制了它们的进一步应用。本文中我们报道了环己烷己酮（C 6 O 6）的合成和应用，该环己烷己酮在LIB中显示出902 mA h g -1的超高容量，在20 mA g -1下的平均电压为1.7V。 1533 Wh kg -1
）。初步的循环测试表明，在50 mA g -1下进行100次循环后，C 6 O 6的容量保持率为82％由于在高极性离子液体电解质中的溶解度有限。此外，DFT计算和实验技术（如拉曼光谱和红外光谱）的结合证明了在放电和充电过程中的电化学活性C = O基团。
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