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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Long cycle life, low self-discharge carbon anode for Li-ion batteries with pores and dual-doping
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Long cycle life, low self-discharge carbon anode for Li-ion batteries with pores and dual-doping

机译：长循环寿命，锂离子电池的低自放电碳阳极，毛孔和双掺杂

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Doping multielectronic elements into carbon materials is an effective method to improve their electrochemical performance, as it can not only improve the electrical conductivity of the material, but also capture more lithium ions when they are involved in Li-ion battery. Here, using flour as biomass carbon source, the chlorine/phosphorus dual-elements doped porous carbon materials are obtained by pyrolysis at 800 degrees C and hydrochloric acid treatment. The introduction of chlorine can significantly increase the capacity of carbon materials. Importantly, the hydrogen in mixed gas during heat treatment process can increase the degree of ordered carbon, which led to the improvement of material conductivity and the ability of lithium ions intercalation, further improving the cycling performance and rate performance. Under the current density of 0.2 A g(-1), it can remain 535.2 mAh g(-1) after 200 cycles. And after two months resting, the capacity only decline by 5.9%, and can still keep the stable cycling performance to 500 cycles. The simple and low cost design of carbon is a creative and promising candidate for anode materials of high performance Li-ion batteries. (C) 2019 Elsevier B.V. All rights reserved.
机译：掺杂多电子元件成碳材料是提高其电化学性能的有效方法，因为它不仅可以提高材料的电导率，而且在涉及锂离子电池时也捕获更多锂离子。这里，使用面粉作为生物质碳源，氯/磷双元素掺杂多孔碳材料通过热解以800℃和盐酸处理获得。引入氯可以显着提高碳材料的能力。重要的是，热处理过程中混合气体中的氢气可以提高有序碳的程度，这导致了材料导电性的提高和锂离子插层的能力，进一步提高了循环性能和速率性能。在0.2Ag（-1）的电流密度下，在200次循环后，它可以保持535.2mahg（-1）。经过两个月的休息后，产能只下降5.9％，仍然可以将稳定的循环性能保持在500周期。碳的简单和低成本设计是高性能锂离子电池的阳极材料的创造性和有希望的候选者。 （c）2019 Elsevier B.v.保留所有权利。

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