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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >Large-Scale Fabrication of Egg-Carton-Inspired Bi/C Composite toward High Volumetric Capacity and Long-Life Lithium Ion Batteries
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Large-Scale Fabrication of Egg-Carton-Inspired Bi/C Composite toward High Volumetric Capacity and Long-Life Lithium Ion Batteries

机译：大规模制造鸡蛋纸盒启发的BI / C复合材料，高容量容量和长寿命锂离子电池

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摘要

Nanostructuring strategies have immensely improved energy storage performance for Li ion batteries. However, the consequent low tap density and the severe side reaction caused by excessive specific surface area make it difficult for nanomaterials to exhibit satisfactory performance in their practical applications. Herein, inspired by the structural characteristics of egg cartons, a rational nanomicro structure was designed to address these problems. Specifically, compact micron-size 2D dimpled carbon frameworks (cartons) with densely distributed bismuth nanoparticles (eggs) were prepared via large-scale pyrolysis methods. The composite electrode exhibits a high volumetric capacity of 1461 mA h cm(-3) at 100 mA g(-1), which can outperform all reported Bi-based anodes so far and even be comparable to prevailing Si-based anodes. Furthermore, a high capacity retention of 89% can be maintained after 1000 cycles at 1 A g(-1). The excellent electrochemical lithium-storage performances are attributed to the unique egg-carton-like hierarchical nanomicro structure with robust mechanical integrity and compact sheet morphology.
机译：纳米结构策略对锂离子电池的储能性能进行了巨大的良好。然而，随后的低振击密度和由过量的比表面积引起的严重反应使得纳米材料难以在其实际应用中表现出令人满意的性能。这里，通过蛋纸盒的结构特征的启发，设计了一个合理的纳米结构来解决这些问题。具体地，通过大规模热解方法制备具有密集分布的铋纳米颗粒（鸡蛋）的紧凑型微米尺寸2D副碳框架（纸箱）。复合电极在100mA g（-1）的高容量容量为1461mA H cm（-3），其可以优于到目前为止的所有报道的BI基阳极且甚至与普遍的Si基阳极相当。此外，在1A（-1）的1000次循环后，可以保持89％的高容量保持率。优异的电化学锂储存性能归因于具有稳健的机械完整性和紧凑型片状形态的独特蛋壳状分级纳米结构。

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  • 作者

    Yuan Haocheng; Jin Yuqiang; Chen Xiaona; Lan Jinle; Yu Yunhua; Yang Xiaoping;

  • 作者单位

    Beijing Univ Chem Technol Coll Mat Sci &

    Engn State Key Lab Organ Inorgan Composites North Third Ring Rd 15 Beijing Peoples R China;

    Beijing Univ Chem Technol Coll Mat Sci &

    Engn State Key Lab Organ Inorgan Composites North Third Ring Rd 15 Beijing Peoples R China;

    Beijing Univ Chem Technol Coll Mat Sci &

    Engn State Key Lab Organ Inorgan Composites North Third Ring Rd 15 Beijing Peoples R China;

    Beijing Univ Chem Technol Coll Mat Sci &

    Engn State Key Lab Organ Inorgan Composites North Third Ring Rd 15 Beijing Peoples R China;

    Beijing Univ Chem Technol Coll Mat Sci &

    Engn State Key Lab Organ Inorgan Composites North Third Ring Rd 15 Beijing Peoples R China;

    Beijing Univ Chem Technol Coll Mat Sci &

    Engn State Key Lab Organ Inorgan Composites North Third Ring Rd 15 Beijing Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学工业;
  • 关键词

    Bi/C anode; Nanomicro-structure; Volumetric capacity; Long-life cycling; Li ion battery;

    机译：BI / C阳极;纳米系结构;体积容量;长寿命循环;LI离子电池;

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