英语翻译硅是最有可能替代石墨的锂离子电池负极材料之一,因为硅具有容量大(生成Li4.4Si合金时为4200mAh/g)、

英语翻译
硅是最有可能替代石墨的锂离子电池负极材料之一,因为硅具有容量大(生成Li4.4Si合金时为4200mAh/g)、嵌锂电位低(0.5V以下)和与电解液反应活性低等优点.但是硅颗粒在嵌/脱锂的过程产生剧烈的体积变化,使得硅颗粒粉化失效,电极容量快速衰减.通过热解沥青或聚氯乙稀(PVC)制备硅/碳复合材料可以显著改善材料的循环性能,这说明碳对体积变化能够进行有效地缓冲,进而抑制容量衰减,这和碳所具有的体积膨胀小、导电性好、质轻等优点密切相关.
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山崖一角 幼苗

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Silicon is the most likely alternative graphite anode materials of lithium ion batteries,because silicon has a large capacity (Li4.4Si alloy was 4200mAh / g ),lithium intercalation potential is low ( below 0.5V) and an electrolyte and has the advantages of low reaction activity.But the silicon particles in the insertion / extraction process generates intense volume change,making silicon particle powder electrode failure,rapid attenuation.Through the pyrolysis tar or polyvinyl chloride ( PVC ) preparing a silicon / carbon composite can significantly improve the cycle performance of material,the carbon to volume changes can effectively buffer,thereby inhibiting capacity attenuation,and the carbon has small volume expansion,good conductivity,light weight and so on are closely related.

1年前

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zishu2007 幼苗

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Silicon is the most likely to replace the graphite anode material for lithium-ion battery is one of the (generated Li4.4Si alloys because silicon has a large capacity of 4200mAh / g), embedded lithium...

1年前

2

笔锋1981 幼苗

共回答了7个问题 举报

Silicon is most likely to replace the graphite lithium ion battery cathode materials because one of the large capacity of silicon has (generation Li4.4 Si alloy for 4200 mAh/g when), intercalated-li p...

1年前

2

青城梅子 幼苗

共回答了1个问题 举报

Silicon is the most likely to replace the graphite anode material for lithium-ion battery is one of the (generated Li4.4Si alloys because silicon has a large capacity of 4200mAh / g), embedded lithium...

1年前

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