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首页> 外文期刊>RSC Advances >Surface phosphation of 3D mesoporous NiCo2O4 nanowire arrays as bifunctional anodes for lithium and sodium ion batteries
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Surface phosphation of 3D mesoporous NiCo2O4 nanowire arrays as bifunctional anodes for lithium and sodium ion batteries

机译：3D中孔NiCO2O4纳米线阵列的表面磷化作为锂和钠离子电池的双功能阳极

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摘要

A novel surface phosphate strategy was adopted to dramatically improve the charge transport, ion diffusion, electroactive sites, and cycle stability of mesoporous NiCo2O4 nanowire arrays (NWAs), drastically boosting their electrochemical properties. Consequently, the as-prepared phosphated NiCo2O4 NWA (P-NiCo2O4 NWA) electrode achieved excellent energy storage performance as a bifunctional anode material for both lithium ion batteries (LIBs) and sodium ion batteries (SIBs). When evaluated as an anode for LIBs, this P-NiCo2O4 NWA electrode showed a high reversible capacity up to 1156 mA h g(-1) for 1500 cycles at 200 mA g(-1) without appreciable capacity attenuation, while in SIBs, the electrode could also deliver an admirable initial capacity as high as 687 mA h g(-1) and maintained 83.5% of this after 500 cycles at the same current density. Most important, when the current density increased from 100 to 1000 mA g(-1), the capacity retention was about 63% in LIBs and 54% in SIBs. This work may shed light on the engineering of efficient electrodes for multifunctional flexible energy storage device applications.
机译：采用一种新型表面磷酸盐策略来显着改善中孔NiCO2O4纳米线阵列（NWA）的电荷输送，离子扩散，电活性位点和循环稳定性，促进其电化学性质。因此，用作锂离子电池（Libs）和钠离子电池（SIBS）的双功能阳极材料实现了AS制备的磷化的NicO 2 O 4 NWA（P-NicO 2 O 4 NWA）电极。当作为LIB的阳极评估时，该P-NicO2O4 NWA电极显示出高达1156 mA Hg（-1）的高可逆容量，在200mA g（-1）时为1500次循环，而无明显容量衰减，而在SIB中，电极还可以提供高达687 mA Hg（-1）的令人钦佩的初始能力，并在相同电流密度下500次循环后保持83.5％。最重要的是，当电流密度从100增加到1000 mA g（-1）时，LIBS的容量潴留约为63％，SIBs中为54％。这项工作可以在高效电极的工程中阐明多功能柔性储能装置应用。

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  • 来源
    《RSC Advances》 |2018年第47期|共9页
  • 作者

    Qiu Wenda; Xiao Hongbing; He Wenting; Li Juanhua; Luo An; Li Yu; Tong Yexiang;

  • 作者单位

    Guangdong Ind Polytech Sch Ecoenvironm Technol 152 Xingang West Rd Guangzhou 510300 Guangdong Peoples R China;

    Guangdong Ind Polytech Sch Ecoenvironm Technol 152 Xingang West Rd Guangzhou 510300 Guangdong Peoples R China;

    Guangdong Ind Polytech Sch Ecoenvironm Technol 152 Xingang West Rd Guangzhou 510300 Guangdong Peoples R China;

    Guangdong Ind Polytech Sch Ecoenvironm Technol 152 Xingang West Rd Guangzhou 510300 Guangdong Peoples R China;

    Guangdong Ind Polytech Sch Ecoenvironm Technol 152 Xingang West Rd Guangzhou 510300 Guangdong Peoples R China;

    Guangdong Ind Polytech Sch Ecoenvironm Technol 152 Xingang West Rd Guangzhou 510300 Guangdong Peoples R China;

    Sun Yat Sen Univ Sch Chem MOE Key Lab Bioinorgan &

    Synthet Chem KLGHEI Environm &

    Energy Chem 135 Xingang West Rd Guangzhou 510275 Guangdong Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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