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小戛劍生新蟲 (正式寫手)
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[求助]
求關(guān)于鋰硫電池的綜述 已有7人參與
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如題,水平不錯(cuò)的,中英文皆可。必有紅花相贈(zèng)。 [ 發(fā)自手機(jī)版 http://www.gaoyang168.com/3g ] |

新蟲 (正式寫手)

木蟲 (小有名氣)
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http://xxtcl.sxicc.ac.cn/CN/abstract/abstract9110.shtml 綜合評(píng)述 碳質(zhì)材料在鋰硫電池中的應(yīng)用研究進(jìn)展 張 強(qiáng), 程新兵, 黃佳琦, 彭翃杰, 魏 飛 清華大學(xué)化學(xué)工程系,綠色反應(yīng)工程與工藝北京市重點(diǎn)實(shí)驗(yàn)室,北京100084 摘要: 隨著石墨負(fù)極的成功商用,鋰離子電池在智能手機(jī)、筆記本電腦等便攜式電子設(shè)備中已得到廣泛的應(yīng)用。經(jīng)過20 多年的發(fā)展,現(xiàn)有基于嵌鋰化合物正極的鋰離子電池已接近其理論容量,但仍不能滿足高速發(fā)展的電子工業(yè)和新興的電動(dòng)汽車等行業(yè)的要求,尋找具有更高能量密度的電池系統(tǒng)迫在眉睫。鋰硫電池系統(tǒng)具有極高的理論能量密度,在多種儲(chǔ)能系統(tǒng)中是最具潛力的一種二次電池。但是鋰硫電池中也存在硫的電導(dǎo)率極低、多硫化物溶解遷移等問題,使其在走向?qū)嵱没倪^程中遇到許多困難。納米碳質(zhì)材料在新型鋰硫電池的開發(fā)過程中處于重要地位,通過納米炭的引入,可以獲得導(dǎo)電復(fù)合正極材料,控制多硫化物的穿梭,從而有望實(shí)現(xiàn)正極硫材料的高效利用。綜述了基于納米炭鄄硫復(fù)合正極材料,尤其是碳納米管、石墨烯、多孔炭以及其雜化物等材料復(fù)合的電極,分析其結(jié)構(gòu)與鋰硫電池性能的關(guān)系,并展望鋰硫電池的發(fā)展方向。 關(guān)鍵詞: 鋰硫電池 碳硫復(fù)合正極 納米炭 碳納米管 石墨烯 多孔炭 雜化物 |
木蟲 (正式寫手)
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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 |

木蟲 (正式寫手)
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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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