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FeOOH Nanocubes Anchored on Carbon Ribbons for Use in Li/O2 Batteries
Chemistry - A European Journal ( IF 3.9 ) Pub Date : 2019-02-04 , DOI: 10.1002/chem.201805551 Zhipeng Lin 1 , Hao Zhang 2 , Guofeng Liang 1 , Yanqi Jin 1 , Hongbin Zeng 1 , Jiawang Li 1 , Jian Chen 3 , Weihong Zhang 3 , Fangyan Xie 3 , Yanshuo Jin 1 , Hui Meng 1
Chemistry - A European Journal ( IF 3.9 ) Pub Date : 2019-02-04 , DOI: 10.1002/chem.201805551 Zhipeng Lin 1 , Hao Zhang 2 , Guofeng Liang 1 , Yanqi Jin 1 , Hongbin Zeng 1 , Jiawang Li 1 , Jian Chen 3 , Weihong Zhang 3 , Fangyan Xie 3 , Yanshuo Jin 1 , Hui Meng 1
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A composite of FeOOH nanocubes anchored on carbon ribbons has been synthesized and used as a cathode material for Li/O2 batteries. Fe2+ ion‐exchanged resin serves as a precursor for both FeOOH nanocubes and carbon ribbons, which are formed simultaneously. The as‐prepared FeOOH cubes are proposed to have a core–shell structure, with FeOOH as the shell and Prussian blue as the core, based on information from XPS, TEM, and EDS mapping. As a cathode material for Li/O2 batteries, FeOOH delivers a specific capacity of 14816 mA h g−1cathode with a cycling stability of 67 cycles over 400 h. The high performance is related to the low overpotential of the oxygen reduction/evolution reaction on FeOOH. The cube structure, the supporting carbon ribbons, and the ‐OOH moieties all contribute to the low overpotential. The discharge product Li2O2 can be efficiently decomposed in the FeOOH cathode after a charging process, leading to higher cycling stability. Its high activity and stability make FeOOH a good candidate for use in non‐aqueous Li/O2 batteries.
中文翻译：
固定在碳带上的FeOOH纳米立方体，用于Li / O2电池
已经合成了锚固在碳带上的FeOOH纳米立方体的复合材料，并将其用作Li / O 2电池的正极材料。Fe 2+离子交换树脂是同时形成的FeOOH纳米立方体和碳带的前体。根据XPS，TEM和EDS映射的信息，建议准备好的FeOOH立方体具有核-壳结构，以FeOOH为壳，普鲁士蓝为核。作为Li / O 2电池的正极材料，FeOOH的比容量为14816 mA h g -1正极在400小时内具有67个循环的循环稳定性。高性能与FeOOH上的氧还原/放出反应的低过电位有关。立方结构，支撑碳带和OOH部分均导致了低电势过低。在充电过程之后，放电产物Li 2 O 2可以在FeOOH阴极中有效地分解，从而导致更高的循环稳定性。FeOOH的高活性和稳定性使其成为非水Li / O 2电池的理想选择。
更新日期：2019-02-04
中文翻译：
固定在碳带上的FeOOH纳米立方体，用于Li / O2电池
已经合成了锚固在碳带上的FeOOH纳米立方体的复合材料，并将其用作Li / O 2电池的正极材料。Fe 2+离子交换树脂是同时形成的FeOOH纳米立方体和碳带的前体。根据XPS，TEM和EDS映射的信息，建议准备好的FeOOH立方体具有核-壳结构，以FeOOH为壳，普鲁士蓝为核。作为Li / O 2电池的正极材料，FeOOH的比容量为14816 mA h g -1正极在400小时内具有67个循环的循环稳定性。高性能与FeOOH上的氧还原/放出反应的低过电位有关。立方结构，支撑碳带和OOH部分均导致了低电势过低。在充电过程之后，放电产物Li 2 O 2可以在FeOOH阴极中有效地分解，从而导致更高的循环稳定性。FeOOH的高活性和稳定性使其成为非水Li / O 2电池的理想选择。
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