...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced Materials >High-Performance Flexible Freestanding Anode with Hierarchical 3D Carbon-Networks/Fe_7S_8/Graphene for Applicable Sodium-Ion Batteries
【24h】

High-Performance Flexible Freestanding Anode with Hierarchical 3D Carbon-Networks/Fe_7S_8/Graphene for Applicable Sodium-Ion Batteries

机译：具有适用于钠离子电池的分层3D碳网络/ Fe_7S_8 /石墨烯的高性能柔性独立式阳极

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Sodium-ion batteries (SIBs) have gained tremendous interest for grid scale energy storage system and power energy batteries. However, the current researches of anode for SIBs still face the critical issues of low areal capacity, limited cycle life, and low initial coulombic efficiency for practical application perspective. To solve this issue, a kind of hierarchical 3D carbon-networks/Fe7S8/graphene (CFG) is designed and synthesized as freestanding anode, which is constructed with Fe7S8 microparticles well-welded on 3D-crosslinked carbon-networks and embedded in highly conductive graphene film, via a facile and scalable synthetic method. The as-prepared freestanding electrode CFG represents high areal capacity (2.12 mAh cm(-2) at 0.25 mA cm(-2)) and excellent cycle stability of 5000 cycles (0.0095% capacity decay per cycle). The assembled all-flexible sodium-ion battery delivers remarkable performance (high areal capacity of 1.42 mAh cm(-2) at 0.3 mA cm(-2) and superior energy density of 144 Wh kg(-1)), which are very close to the requirement of practical application. This work not only enlightens the material design and electrode engineering, but also provides a new kind of freestanding high energy density anode with great potential application prospective for SIBs.
机译：钠离子电池（SIB）对电网规模的储能系统和电能电池引起了极大的兴趣。然而，从实际应用的角度来看，当前用于SIB的阳极的研究仍面临着低面积容量，有限的循环寿命和低的初始库伦效率的关键问题。为了解决这个问题，设计并合成了一种分层的3D碳网络/ Fe7S8 /石墨烯（CFG）作为独立式阳极，该阳极由很好地焊接在3D交联的碳网络上并嵌入高导电性石墨烯的Fe7S8微粒构成胶片，通过一种方便且可扩展的合成方法。所准备的独立式电极CFG代表高面积容量（在0.25 mA cm（-2）时为2.12 mAh cm（-2））和5000个循环的出色循环稳定性（每个循环0.0095％的容量衰减）。组装好的全柔性钠离子电池可提供出色的性能（在0.3 mA cm（-2）时具有1.42 mAh cm（-2）的高面积容量和144 Wh kg（-1）的出色能量密度），非常接近根据实际应用的要求。这项工作不仅启发了材料设计和电极工程，而且提供了一种新型的独立式高能量密度阳极，对SIB具有巨大的潜在应用前景。

著录项

  • 来源
    《Advanced Materials》 |2019年第8期|1806664.1-1806664.9|共9页
  • 作者

    Chen Weihua; Zhang Xixue; Mi Liwei; Liu Chuntai; Zhang Jianmin; Cui Shizhong; Feng Xiangming; Cao Yuliang; Shen Changyu;

  • 作者单位

    Zhengzhou Univ, Coll Chem & Mol Engn, Zhengzhou 450001, Henan, Peoples R China|Zhengzhou Univ, Natl Engn & Res Ctr Adv Polymer Proc Technol, Zhengzhou 450001, Henan, Peoples R China;

    Zhengzhou Univ, Coll Chem & Mol Engn, Zhengzhou 450001, Henan, Peoples R China;

    Zhongyuan Univ Technol, Ctr Adv Mat Res, Zhengzhou 450007, Henan, Peoples R China;

    Zhengzhou Univ, Natl Engn & Res Ctr Adv Polymer Proc Technol, Zhengzhou 450001, Henan, Peoples R China;

    Zhengzhou Univ, Coll Chem & Mol Engn, Zhengzhou 450001, Henan, Peoples R China;

    Zhongyuan Univ Technol, Ctr Adv Mat Res, Zhengzhou 450007, Henan, Peoples R China;

    Zhengzhou Univ, Coll Chem & Mol Engn, Zhengzhou 450001, Henan, Peoples R China;

    Wuhan Univ, Coll Chem & Mol Sci, Hubei Key Lab Electrochem Power Sources, Wuhan 430072, Hubei, Peoples R China;

    Zhengzhou Univ, Natl Engn & Res Ctr Adv Polymer Proc Technol, Zhengzhou 450001, Henan, Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    anodes; areal capacity; Fe7S8; flexible freestanding anodes; sodium-ion batteries;

    机译：阳极;面积容量;Fe7S8;柔性独立式阳极;钠离子电池;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号