Perovskite-type La0.8Sr0.2Co0.8Fe0.2O3 with uniform dispersion on N-doped reduced graphene oxide as an efficient bi-functional Li-O2 battery cathode

Junfang Cheng, Yuexing Jiang, Ming Zhang, Lu Zou, Yizhen Huang, Ziling Wang, Bo Chi*, Jian Pu, Jian Li

*この研究の対応する著者

研究成果: Article査読

23 被引用数 (Scopus)

抄録

A bi-functional Li-O2 battery cathode composed of perovskite oxide La0.8Sr0.22Co0.8Fe0.2O3 (LSCF8282) and N-doped reduced graphene oxide (N-rGO) was prepared by a sol-gel method and hydrothermal treatment. LSCF nanoparticles were dispersed homogeneously on the surface of N-rGO and the composite cathode was investigated for Li-O2 batteries. The results confirmed that Li-O2 batteries with the LSCF@N-rGO cathode exhibited better cycle stability than both LSCF-SP (Super P) and pure N-rGO cathodes. Furthermore batteries with the LSCF@N-rGO cathode showed higher capacity coulombic efficiency and lower overpotential compared with those with the pure N-rGO cathode. EIS study and morphology evolution of products revealed that LSCF can remold the shape of Li2O2 and catalyze the decomposition of i2O2 which is crucial for oxygen reduction reaction and oxygen evolution reaction processes.

本文言語English
ページ(範囲)10227-10230
ページ数4
ジャーナルPhysical Chemistry Chemical Physics
19
16
DOI
出版ステータスPublished - 2017
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)
  • 物理化学および理論化学

フィンガープリント

「Perovskite-type La<sub>0.8</sub>Sr<sub>0.2</sub>Co<sub>0.8</sub>Fe<sub>0.2</sub>O<sub>3</sub> with uniform dispersion on N-doped reduced graphene oxide as an efficient bi-functional Li-O<sub>2</sub> battery cathode」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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