Peapod‐like Li<sub>3</sub>VO<sub>4</sub>/N‐Doped Carbon Nanowires with Pseudocapacitive Properties as Advanced Materials for High‐Energy Lithium‐Ion Capacitors

DOI Web Site Web Site 被引用文献6件
  • Laifa Shen
    Max Planck Institute for Solid State Research Heisenbergstr. 1 Stuttgart 70569 Germany
  • Haifeng Lv
    Key Laboratory of Materials for Energy Conversion Chinese Academy of Sciences Department of Materials Science and Engineering University of Science and Technology of China Hefei Anhui 230026 China
  • Shuangqiang Chen
    Max Planck Institute for Solid State Research Heisenbergstr. 1 Stuttgart 70569 Germany
  • Peter Kopold
    Max Planck Institute for Solid State Research Heisenbergstr. 1 Stuttgart 70569 Germany
  • Peter A. van Aken
    Max Planck Institute for Solid State Research Heisenbergstr. 1 Stuttgart 70569 Germany
  • Xiaojun Wu
    Key Laboratory of Materials for Energy Conversion Chinese Academy of Sciences Department of Materials Science and Engineering University of Science and Technology of China Hefei Anhui 230026 China
  • Joachim Maier
    Max Planck Institute for Solid State Research Heisenbergstr. 1 Stuttgart 70569 Germany
  • Yan Yu
    Max Planck Institute for Solid State Research Heisenbergstr. 1 Stuttgart 70569 Germany

書誌事項

公開日
2017-05-03
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1002/adma.201700142
公開者
Wiley

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説明

<jats:p>Lithium ion capacitors are new energy storage devices combining the complementary features of both electric double‐layer capacitors and lithium ion batteries. A key limitation to this technology is the kinetic imbalance between the Faradaic insertion electrode and capacitive electrode. Here, we demonstrate that the Li<jats:sub>3</jats:sub>VO<jats:sub>4</jats:sub> with low Li‐ion insertion voltage and fast kinetics can be favorably used for lithium ion capacitors. N‐doped carbon‐encapsulated Li<jats:sub>3</jats:sub>VO<jats:sub>4</jats:sub> nanowires are synthesized through a morphology‐inheritance route, displaying a low insertion voltage between 0.2 and 1.0 V, a high reversible capacity of ≈400 mAh g<jats:sup>−1</jats:sup> at 0.1 A g<jats:sup>−1</jats:sup>, excellent rate capability, and long‐term cycling stability. Benefiting from the small nanoparticles, low energy diffusion barrier and highly localized charge‐transfer, the Li<jats:sub>3</jats:sub>VO<jats:sub>4</jats:sub>/N‐doped carbon nanowires exhibit a high‐rate pseudocapacitive behavior. A lithium ion capacitor device based on these Li<jats:sub>3</jats:sub>VO<jats:sub>4</jats:sub>/N‐doped carbon nanowires delivers a high energy density of 136.4 Wh kg<jats:sup>−1</jats:sup> at a power density of 532 W kg<jats:sup>−1</jats:sup>, revealing the potential for application in high‐performance and long life energy storage devices.</jats:p>

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