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小戛剑生

新虫 (正式写手)

[求助] 求关于锂硫电池的综述 已有7人参与

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455146091

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Liquid electrolyte lithium/sulfur battery: Fundamental chemistry,problems, and solutions
Sheng S. Zhang
ABSTRACT:Lithium/sulfur (Li/S) battery has a 3e5 fold higher theoretical energy density than state-of-art lithiumion batteries, and research has been ongoing for more than three decades. However, the commercialization of Li/S battery still cannot be realized due to many problematic issues, including short cycle life,low cycling efficiency, poor safety and a high self-discharge rate. All these issues are related to the dissolution of lithium polysulfide (PS), the series of sulfur reduction intermediates, in liquid electrolyte and to resulting parasitic reactions with the lithium anode and electrolyte components. On the other hand, the dissolution of PS is essential for the performance of a Li/S cell. Without dissolution of PS, the Li/S cell cannot operate progressively due to the non-conductive nature of elemental sulfur and its reduction products. In this review article, we start with the fundamental chemistry of elemental sulfur in order to discuss the problems and solutions of liquid electrolyte Li/S battery.

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Qiao
4楼2014-09-27 08:19:56
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zqflotu

木虫 (小有名气)

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http://xxtcl.sxicc.ac.cn/CN/abstract/abstract9110.shtml
综合评述



碳质材料在锂硫电池中的应用研究进展



张 强, 程新兵, 黄佳琦, 彭翃杰, 魏 飞



清华大学化学工程系,绿色反应工程与工艺北京市重点实验室,北京100084


摘要:
随着石墨负极的成功商用,锂离子电池在智能手机、笔记本电脑等便携式电子设备中已得到广泛的应用。经过20 多年的发展,现有基于嵌锂化合物正极的锂离子电池已接近其理论容量,但仍不能满足高速发展的电子工业和新兴的电动汽车等行业的要求,寻找具有更高能量密度的电池系统迫在眉睫。锂硫电池系统具有极高的理论能量密度,在多种储能系统中是最具潜力的一种二次电池。但是锂硫电池中也存在硫的电导率极低、多硫化物溶解迁移等问题,使其在走向实用化的过程中遇到许多困难。纳米碳质材料在新型锂硫电池的开发过程中处于重要地位,通过纳米炭的引入,可以获得导电复合正极材料,控制多硫化物的穿梭,从而有望实现正极硫材料的高效利用。综述了基于纳米炭鄄硫复合正极材料,尤其是碳纳米管、石墨烯、多孔炭以及其杂化物等材料复合的电极,分析其结构与锂硫电池性能的关系,并展望锂硫电池的发展方向。

关键词:  锂硫电池   碳硫复合正极   纳米炭   碳纳米管   石墨烯   多孔炭   杂化物

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2楼2014-09-27 00:15:32
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455146091

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感谢参与,应助指数 +1
Recent advances in lithiumesulfur batteries
Lin Chen, Leon L. Shaw
ABSTRACT :Lithium-sulfur (Li-S) batteries have attracted much attention lately because they have very high theoretical specific energy (2500 Wh kg-1), five times higher than that of the commercial LiCoO2/graphite batteries. As a result, they are strong contenders for next-generation energy storage in the areas of portable electronics, electric vehicles, and storage systems for renewable energy such as wind power and solar energy. However, poor cycling life and low capacity retention are main factors limiting their commercialization. To date, a large number of electrode and electrolyte materials to address these challenges have been investigated. In this review, we present the latest fundamental studies and technological development of various nanostructured cathode materials for LieS batteries, including their preparation approaches, structure, morphology and battery performance. Furthermore, the development of other significant components of Li-S batteries including anodes, electrolytes, additives, binders and separators are also highlighted. Not only does the intention of our review article comprise the summary of recent advances in LieS cells, but also we cover some of our proposals for engineering of LieS cell configurations. These systematic discussion and proposed directions can enlighten ideas and offer avenues in the rational design of durable and high performance LieS batteries in the near future

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Qiao
3楼2014-09-27 08:16:40
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小戛剑生

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引用回帖:
2楼: Originally posted by zqflotu at 2014-09-27 00:15:32
http://xxtcl.sxicc.ac.cn/CN/abstract/abstract9110.shtml
综合评述



碳质材料在锂硫电池中的应用研究进展



张 强, 程新兵, 黄佳琦, 彭翃杰, 魏 飞



清华大学化学工程系,绿色反应工程 ...

谢谢
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5楼2014-09-27 09:06:03
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