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题名: Controlling Electrochemical Lithiation/Delithiation Reaction Paths for Long-cycle Life Nanochain-structured FeS2 Electrodes
作者: Yang, J; Liu, MN; Wei, ZH; Pan, ZH; Qiu, YC; Ye, FM(叶方敏); Yang, YL; Zhao, XL; Sheng, LM; Zhang, YG(张跃钢)
通讯作者: Sheng, LM ; Zhang, YG(张跃钢)
刊名: ELECTROCHIMICA ACTA
发表日期: 2016
DOI: 10.1016/j.electacta.2016.06.067
卷: 211
收录类别: SCI ; EI
文章类型: 期刊论文
部门归属: 纳米研究国际实验室
英文摘要: Pyrite (FeS2) stands out from other metal sulfides due to its abundance, low toxicity and high specific energy density. However, the low utilization and short cycle life of FeS2 caused by irreversible side reactions and dramatic structural changes during charge/discharge process seriously hinders its practical application. In this work, we designed FeS2 nanochains to address these issues because this unique structure not only shortens the ion/electron diffusion distance, increases the electrode/electrolyte contact area, but also accommodates the strain associated with Li ion intercalation and deintercalation reactions. Compared with nanoparticles, the FeS2 nanochains synthesized by magnetic-field-assisted aerosol pyrolysis could cycle up to 800 cycles at 0.5C, remained a discharge capacity of 342.4 mA h g(-1) in the voltage range of 1.0-2.6 V and achieved a remarkable capacity fading rate of 0.02% per cycle, which is among the best values demonstrated so far for Li/FeS2 cells. In-situ Raman experiments revealed that the irreversible side reactions could be suppressed through controlling the voltage window, which can be benefit for further improving the performance of Li/FeS2 cells. (C) 2016 Elsevier Ltd. All rights reserved.
关键词[WOS]: LITHIUM-ION BATTERIES ; SENSITIZED SOLAR-CELLS ; HYDROTHERMAL SYNTHESIS ; AMBIENT-TEMPERATURE ; PYRITE ELECTRODE ; CATHODE MATERIAL ; ANODE MATERIALS ; THIN-FILMS ; SULFURIZATION ; PERFORMANCE
语种: 英语
JCR小类分区: 一区
WOS记录号: WOS:000380904100076
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinano.ac.cn/handle/332007/4602
Appears in Collections:纳米研究国际实验室_张跃钢团队_期刊论文

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Recommended Citation:
Yang, J,Liu, MN,Wei, ZH,et al. Controlling Electrochemical Lithiation/Delithiation Reaction Paths for Long-cycle Life Nanochain-structured FeS2 Electrodes[J]. ELECTROCHIMICA ACTA,2016,211.
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