Integrating PtNi nanoparticles on NiFe layered double hydroxide nanosheets as a bifunctional catalyst for hybrid sodium-air batteries
文献类型：期刊论文
| 作者 | Yu, Xueqing; Kang, Yao; Wang, Shuo; Hui, Kwan San; Hui, Kwun Nam; Zhao, Huajun; Li, Jianding; Li, Bo; Xu, Jincheng; Chen, Liang |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2020 |
| 卷号 | 8期号:32页码:16355-16365 |
| 关键词 | OXYGEN REDUCTION SEAWATER BATTERIES EVOLUTION ELECTROCATALYST |
| DOI | 10.1039/d0ta04602g |
| 英文摘要 | Hybrid sodium-air batteries (HSABs) are emerging systems for next-generation energy storage owing to their high theoretical energy density, high specific capacity, low cost, and environmental friendliness. However, the ungratified energy efficiency, large overpotential, and poor cycling stability associated with the sluggish oxygen reduction reaction/oxygen evolution reaction (ORR/OER) at air electrodes hamper their further development. Herein, we report a facile electrodeposition method to construct three-dimensional nickel defect-rich nickel-iron layered double hydroxide nanosheets decorated with platinum-nickel alloyed nanoparticles grown on macroporous nickel foam substrates (PtNi/NixFe LDHs) as a binder-free electrocatalyst. The optimal catalyst (Pt3Ni1/NixFe LDHs) demonstrates a low overpotential (265 mV at the current density of 10 mA cm(-2)), a small Tafel slope (22.2 mV dec(-1)) towards the OER and a high half-wave potential (0.852 V) for ORR, as well as superior long-term stability in comparison to commercial catalysts. Theoretical calculations revealed that the Ni-top site of Pt3Ni1/NixFe LDHs works as an active site for enhanced OER/ORR activities. The fabricated HSAB with Pt3Ni1/NixFe LDHs as the air cathode displayed not only an initial low overpotential gap (0.50 V) but also superior rechargeability and structure stability with high round-trip efficiency (similar to 79.9%) of over 300 cycles. These results provide a novel design of bifunctional and binder-free catalyst as the cathode for metal-air batteries. |
| 学科主题 | Chemistry ; Energy & Fuels ; Materials Science |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/20561]  |
| 专题 | 2020专题 2020专题_期刊论文 |
| 作者单位 | 1.Chen, L (corresponding author), Univ Chinese Acad Sci, Beijing 100049, Peoples R China. 2.Hui, KN 3.Shao, HY (corresponding author), Univ Macau, Joint Key Lab, Minist Educ, Inst Appl Phys & Mat Engn, Ave Univ, Taipa, Macao, Peoples R China. 4.Chen, L (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Yu, Xueqing,Kang, Yao,Wang, Shuo,et al. Integrating PtNi nanoparticles on NiFe layered double hydroxide nanosheets as a bifunctional catalyst for hybrid sodium-air batteries[J]. JOURNAL OF MATERIALS CHEMISTRY A,2020,8(32):16355-16365. |
| APA | Yu, Xueqing.,Kang, Yao.,Wang, Shuo.,Hui, Kwan San.,Hui, Kwun Nam.,...&Shao, Huaiyu.(2020).Integrating PtNi nanoparticles on NiFe layered double hydroxide nanosheets as a bifunctional catalyst for hybrid sodium-air batteries.JOURNAL OF MATERIALS CHEMISTRY A,8(32),16355-16365. |
| MLA | Yu, Xueqing,et al."Integrating PtNi nanoparticles on NiFe layered double hydroxide nanosheets as a bifunctional catalyst for hybrid sodium-air batteries".JOURNAL OF MATERIALS CHEMISTRY A 8.32(2020):16355-16365. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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