Tuning Bifunctional Oxygen Electrocatalysts by Changing the A-Site Rare-Earth Element in Perovskite Nickelates
文献类型：期刊论文
| 作者 | Li, YY; Wang, L; Stoerzinger, KA; Chang, L; Zhao, JL ; Tang, CS; Yin, XM; Bowden, ME; Yang, ZZ; Guo, HZ
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| 刊名 | ADVANCED FUNCTIONAL MATERIALS
 |
| 出版日期 | 2018 |
| 卷号 | 28期号:39页码:1803712 |
| ISSN号 | 1616-301X |
| 关键词 | nickelates oxygen evolution reaction oxygen reduction reaction oxygen vacancy perovskite |
| DOI | 10.1002/adfm.201803712 |
| 文献子类 | Article |
| 英文摘要 | Perovskite-structured (ABO(3)) transition metal oxides are promising bifunctional electrocatalysts for efficient oxygen evolution reaction (OER) and oxygen reduction reaction (ORR). In this paper, a set of epitaxial rare-earth nickelates (RNiO3) thin films is investigated with controlled A-site isovalent substitution to correlate their structure and physical properties with ORR/OER activities, examined by using a three-electrode system in O-2-saturated 0.1 m KOH electrolyte. The ORR activity decreases monotonically with decreasing the A-site element ionic radius which lowers the conductivity of RNiO3 (R = La, La0.5Nd0.5, La0.2Nd0.8, Nd, Nd0.5Sm0.5, Sm, and Gd) films, with LaNiO3 being the most conductive and active. On the other hand, the OER activity initially increases upon substituting La with Nd and is maximal at La0.2Nd0.8NiO3. Moreover, the OER activity remains comparable within error through Sm-doped NdNiO3. Beyond that, the activity cannot be measured due to the potential voltage drop across the film. The improved OER activity is ascribed to the partial reduction of Ni3+ to Ni2+ as a result of oxygen vacancies, which increases the average occupancy of the e(g) antibonding orbital to more than one. The work highlights the importance of tuning A-site elements as an effective strategy for balancing ORR and OER activities of bifunctional electrocatalysts. |
| 电子版国际标准刊号 | 1616-3028 |
| WOS关键词 | METAL-INSULATOR-TRANSITION ; REDUCTION REACTION ; EVOLUTION REACTION ; CHARGE-TRANSFER ; AIR BATTERIES ; FUEL-CELLS ; B-SITE ; ENERGY ; OXIDES ; PRINCIPLES |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000445327300023 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286361]  |
| 专题 | 高能物理研究所_粒子天体物理中心 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Li, YY,Wang, L,Stoerzinger, KA,et al. Tuning Bifunctional Oxygen Electrocatalysts by Changing the A-Site Rare-Earth Element in Perovskite Nickelates[J]. ADVANCED FUNCTIONAL MATERIALS,2018,28(39):1803712. |
| APA | Li, YY.,Wang, L.,Stoerzinger, KA.,Chang, L.,Zhao, JL.,...&奎热西.(2018).Tuning Bifunctional Oxygen Electrocatalysts by Changing the A-Site Rare-Earth Element in Perovskite Nickelates.ADVANCED FUNCTIONAL MATERIALS,28(39),1803712. |
| MLA | Li, YY,et al."Tuning Bifunctional Oxygen Electrocatalysts by Changing the A-Site Rare-Earth Element in Perovskite Nickelates".ADVANCED FUNCTIONAL MATERIALS 28.39(2018):1803712. |
入库方式： OAI收割
来源：高能物理研究所
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