Direct Thermal Pyrolysis Enabling the Use of Cobalt Oxides Nanoparticles from Commercial Acetates as High-Capacity Anodes for Lithium-Ion Batteries,Industrial & Engineering Chemistry Research

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Direct Thermal Pyrolysis Enabling the Use of Cobalt Oxides Nanoparticles from Commercial Acetates as High-Capacity Anodes for Lithium-Ion Batteries
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-07-07 , DOI: 10.1021/acs.iecr.0c01895
Feng Gong ₁ , Dawei Xia _{1,

2,

3} , Mingqian Li ₂ , Qiang Zhou ₃ , Dongdong Wang ₂ , Pu Zhang ₄ , Yi Zhang ₅

Affiliation

An unprecedentedly facile, cheap, green, and scalable approach to fabricate cobalt oxide nanoparticles has been developed in this work. By directly annealing cobalt acetate tetrahydrate, Co₃O₄ with a trace amount of CoO was formed at 300 °C in air. A rapid morphological change (<30 min) from chunk to nanoparticles is elucidated. When applied as the anode material for lithium-ion batteries (LIBs), they demonstrated an excellent lithium storage capability of 1150 mAh/g at a current density of 0.2 A/g over 100 cycles and a superb rate capability as high as 820 mAh/g at 4 A/g. This approach with low labor and energy cost shed light on a new route for the industrial production of cobalt oxides, opening more opportunities for their applications in electrochemical devices.

中文翻译：

直接热解使从商业用途醋酸盐中得到的氧化钴纳米粒子能够用作锂离子电池的高容量阳极

在这项工作中，开发了一种前所未有的简便，便宜，绿色和可扩展的方法来制造氧化钴纳米颗粒。通过直接退火四水合醋酸钴，在300°C的空气中形成具有痕量CoO的Co ₃ O ₄。阐明了从块状到纳米颗粒的快速形态变化（<30分钟）。当用作锂离子电池（LIBs）的负极材料时，它们在100次循环中以0.2 A / g的电流密度显示了1150 mAh / g的出色锂存储能力，以及高达820 mAh / g的超高倍率能力。 g在4 A / g。这种低劳动力和能源成本的方法为工业生产钴氧化物开辟了一条新路线，为它们在电化学装置中的应用提供了更多机会。

更新日期：2020-07-29

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