High-Capacity and Long-Cycle Lifetime Li−CO2/O2 Battery Based on Dandelion-like NiCo2O4 Hollow Microspheres

Lu Zou, Yuexing Jiang, Junfang Cheng, Ziling Wang, Lichao Jia*, Bo Chi, Jian Pu, Li Jian

*この研究の対応する著者

研究成果: Article査読

9 被引用数 (Scopus)

抄録

As a promising energy storage technology, Li−CO2/O2 battery with ultrahigh discharge capacities have received much attention, reaching capacities three times that of Li−O2 batteries. Herein, using an excellent catalyst, NiCo2O4 designed as a 3D dandelion-like hollow nanostructure, a Li−CO2/O2 battery is systematically investigated to understand how the reaction mechanisms are affected by CO2. With CO2 stabilization, the batteries could achieve a specific discharge capacity as high as 22000 mAh/g and a long-term cycling performance of up to 140 cycles without apparent deterioration. In addition, the intrinsic mechanism of the current density influence is explored based on the Li2CO3 morphology evolution. Superoxide anion radical species (O2.−) were identified to be rapidly consumed by CO2, which dramatically enhances the stability of Li−O2 batteries. The results indicate that the NiCo2O4 nanocatalyst can efficiently inhibit Li2CO3 aggregation and realize the maximum utilization of active sites. The results confirm that the 3D dandelion-like NiCo2O4 catalyst can be a potential cathode for Li−CO2/O2 batteries.

本文言語English
ページ(範囲)3117-3124
ページ数8
ジャーナルChemCatChem
11
13
DOI
出版ステータスPublished - 2019 7 4
外部発表はい

ASJC Scopus subject areas

  • 触媒
  • 物理化学および理論化学
  • 有機化学
  • 無機化学

フィンガープリント

「High-Capacity and Long-Cycle Lifetime Li−CO<sub>2</sub>/O<sub>2</sub> Battery Based on Dandelion-like NiCo<sub>2</sub>O<sub>4</sub> Hollow Microspheres」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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