Exploration of vanadium benzenedicarboxylate as a cathode for rechargeable lithium batteries

Watchareeya Kaveevivitchai, Allan J. Jacobson

研究成果: Article同行評審

43 引文 斯高帕斯(Scopus)

摘要

The electrochemical reaction with lithium of a vanadium-based metal-organic framework VIV(O)(bdc) [MIL-47], which is isostructural to the iron compound MIL-53(Fe), was investigated. The large open channels which can accommodate small guest species, such as Li+ ions, together with the redox properties of the tetravalent vanadium ions make this material of potential interest as a rechargeable intercalation electrode for lithium batteries. The electrochemical properties were investigated in Li|1 M LiPF6 in ethylene carbonate (EC) and dimethyl carbonate (DMC)|V(O)(bdc) cells between 4.0 and 1.5 V vs. Li/Li+. V(O)(bdc) cathodes can be reversibly cycled in Li cells with good rate capability and specific capacity. At a current density of C/12, Li/V(O)(bdc) cells can be cycled between 0 < x > 0.7 in LixV(O)(bdc) with ∼100% coulombic efficiency corresponding to 82 mAh g-1 which is a higher capacity than that found for MIL-53(Fe). The cell performance and electrochemical profiles at various current conditions are discussed. Structural evolution taking place during lithium intercalation was monitored by powder X-ray diffraction on phases of LixV(O)(bdc) (0 < x < 2) chemically prepared by using n-BuLi. Previous studies of the reaction of lithium with metal-organic frameworks are briefly reviewed for comparison with the data presented for LixV(O)(bdc).

原文English
頁(從 - 到)265-273
頁數9
期刊Journal of Power Sources
278
DOIs
出版狀態Published - 2015 三月 15

All Science Journal Classification (ASJC) codes

  • 可再生能源、永續發展與環境
  • 能源工程與電力技術
  • 物理與理論化學
  • 電氣與電子工程

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