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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.2
- 수록면
- 41 - 52 (12page)
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NiO and Co₃O₄-doped porous La(CoNi)O₃ perovskite oxides were prepared from excess Ni addition by a hydrothermal method using porous silica template, and characterized as bifunctional catalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) for Zn-air rechargeable batteries in alkaline solution. Excess Ni induced to form NiO and Co₃O₄ in La(CoNi)O₃ particles. The NiO and Co₃O₄-doped porous La(CoNi)O₃ showed high specific surface area, up to nine times of conventionally synthesized perovskite oxide, and abundant pore volume with similar structure. Extra added Ni was partially substituted for Co as B site of ABO₃ perovskite structure and formed to NiO and Co₃O₄ which was highly dispersed in particles. Excess Ni in La(CoNi)O₃ catalysts increased OER performance (259 mA/㎠ at 2.4 V) in alkaline solution, although the activities (211 mA/㎠ at 0.5 V) for ORR were not changed with the content of excess Ni. La(CoNi)O₃ with excess Ni showed very stable cyclability and low capacity fading rate (0.38 & 0.07 μV/hour for ORR & OER) until 300 hours (~70 cycles) but more excess content of Ni in La(CoNi)O₃ gave negative effect to cyclability.
목차
Abstract
1. Introduction
2. Experimental
3. Results and discussion
4. Conclusions
References
참고문헌 (34)
참고문헌 신청
Y. Li / 2014 / Recent advances in zinc–air batteries / Chem. Soc. Rev 43(15):5257~5275
J. Jiang / 2012 / Recent advances in metal oxide-based electrode architecture design for electrochemical energy storage / Adv. Mater 24(38):5166~5180
S. Guo / 2013 / Tuning nanoparticle catalysis for the oxygen reduction reaction / Angew. Chem. Int. Ed 52(33):8526~8544
J. H. Yang / 2018 / Synthesis of highly porous LaCoO3 catalyst by nanocasting and its performance for oxygen reduction and evolution reactions in alkaline solution / J. Electroceram 41:80~87
V. Elayappan / 2020 / Three-dimensional bimetal TMO supported carbon based electrocatalyst developed via dry synthesis for hydrogen and oxygen evolution / Appl. Surf. Sci 505:144642
J. Jiang / 2012 / Recent advances in metal oxide-based electrode architecture design for electrochemical energy storage / Adv. Mater 24(38):5166~5180
S. Guo / 2013 / Tuning nanoparticle catalysis for the oxygen reduction reaction / Angew. Chem. Int. Ed 52(33):8526~8544
J. H. Yang / 2018 / Synthesis of highly porous LaCoO3 catalyst by nanocasting and its performance for oxygen reduction and evolution reactions in alkaline solution / J. Electroceram 41:80~87
V. Elayappan / 2020 / Three-dimensional bimetal TMO supported carbon based electrocatalyst developed via dry synthesis for hydrogen and oxygen evolution / Appl. Surf. Sci 505:144642
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