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Electrocatalytic Iodine Reduction Reaction Enabled by Aqueous Zinc‐Iodine Battery with Improved Power and Energy Densities
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-12-14 , DOI: 10.1002/anie.202014447 Longtao Ma 1 , Yiran Ying 2 , Shengmei Chen 1 , Zhaodong Huang 1 , Xinliang Li 1 , Haitao Huang 2 , Chunyi Zhi 1, 3
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-12-14 , DOI: 10.1002/anie.202014447 Longtao Ma 1 , Yiran Ying 2 , Shengmei Chen 1 , Zhaodong Huang 1 , Xinliang Li 1 , Haitao Huang 2 , Chunyi Zhi 1, 3
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Proposed are Prussian blue analogue hosts with ordered and continuous channels, and electrocatalytic functionality with open Co and Fe species, which facilitate maximum I2 utilization efficiency and direct I2 to I− conversion kinetics of the I2 reduction reaction, and free up 1/3 I− from I3−. Co[Co1/4Fe3/4(CN)6] exhibits a low energy barrier (0.47 kJ mol−1) and low Tafel slope (76.74 mV dec−1). Accordingly, the Co[Co1/4Fe3/4(CN)6]/I2//Zn battery delivers a capacity of 236.8 mAh g−1 at 0.1 A g−1 and a rate performance with 151.4 mAh g−1 achieved even at 20 A g−1. The battery delivers both high energy density and high‐power density of 305.5 Wh kg−1 and 109.1 kW kg−1, higher than I2//Zn batteries reported to date. Furthermore, solid‐state flexible batteries were constructed. A 100 mAh high capacity solid‐state I2//Zn battery is demonstrated with excellent cycling performance of 81.2 % capacity retained after 400 cycles.
中文翻译：
具有改善的功率和能量密度的水性锌碘电池实现的电催化碘还原反应
提议是普鲁士蓝类似物主机具有有序且连续的信道，并用开放Co和Fe物质，其促进最大的I电功能2利用效率和直接I 2至I -的I转化动力学2还原反应，并释放1 / 3我-从我3 -。Co [Co 1/4 Fe 3/4（CN）6 ]表现出低能垒（0.47 kJ mol -1）和低Tafel斜率（76.74 mV dec -1）。因此，Co [Co 1/4 Fe 3/4（CN）6 ] / I 2// Zn电池在0.1 A g -1时可提供236.8 mAh g -1的容量，甚至在20 A g -1时也可达到151.4 mAh g -1的速率性能。该电池可提供305.5 Wh kg -1和109.1 kW kg -1的高能量密度和高功率密度，高于迄今为止报道的I 2 // Zn电池。此外，构造了固态柔性电池。演示了100 mAh高容量固态I 2 // Zn电池，其出色的循环性能在400次循环后保留了81.2％的容量。
更新日期：2021-02-08
中文翻译：
具有改善的功率和能量密度的水性锌碘电池实现的电催化碘还原反应
提议是普鲁士蓝类似物主机具有有序且连续的信道，并用开放Co和Fe物质，其促进最大的I电功能2利用效率和直接I 2至I -的I转化动力学2还原反应，并释放1 / 3我-从我3 -。Co [Co 1/4 Fe 3/4（CN）6 ]表现出低能垒（0.47 kJ mol -1）和低Tafel斜率（76.74 mV dec -1）。因此，Co [Co 1/4 Fe 3/4（CN）6 ] / I 2// Zn电池在0.1 A g -1时可提供236.8 mAh g -1的容量，甚至在20 A g -1时也可达到151.4 mAh g -1的速率性能。该电池可提供305.5 Wh kg -1和109.1 kW kg -1的高能量密度和高功率密度，高于迄今为止报道的I 2 // Zn电池。此外，构造了固态柔性电池。演示了100 mAh高容量固态I 2 // Zn电池，其出色的循环性能在400次循环后保留了81.2％的容量。
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