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首页> 外文期刊>Electrochimica Acta >Electrochemical hydrogen storage behaviors of ultrafine Co-P particles prepared by direct ball-milling method
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Electrochemical hydrogen storage behaviors of ultrafine Co-P particles prepared by direct ball-milling method

机译：直接球磨法制备超细Co-P颗粒的电化学储氢行为

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摘要

Ultrafine particles of Co-P were synthesized by direct ball milling of Co and P powders and also investigated as a reversible hydrogen storage electrode material. The electrochemical results demonstrated that the reversible charge-discharge capacity of the Co-P electrode can reach more than 300 mA h/g. In addition, the cycling ability and high rate capability of the Co-P electrode are excellent with only 5% capacity decay after 100 cycles at a high rate of 300 mA/g. The temperature-programmed desorption measurements (TPD) of the Co-P electrode revealed that the charge and discharge reactions of the Co-P electrode proceeds predominantly through electrochemical hydrogen storage mechanism and the electrooxidation of cobalt contributes only a negligible part to the reversible electrochemical capacity.
机译：通过Co和P粉末的直接球磨合成Co-P的超细颗粒，并将其作为可逆储氢电极材料进行研究。电化学结果表明，Co-P电极的可逆充放电容量可达到300 mA h / g以上。另外，Co-P电极的循环能力和高倍率能力优异，在以300mA / g的高倍率进行100次循环后仅具有5％的容量衰减。 Co-P电极的程序升温脱附测量（TPD）显示，Co-P电极的充电和放电反应主要通过电化学储氢机理进行，而钴的电氧化仅对可逆电化学容量做出了微不足道的作用。

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