Integrating PtNi nanoparticles on NiFe layered double hydroxide nanosheets as a bifunctional catalyst for hybrid sodium-air batteries

doi:10.1039/d0ta04602g

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	Integrating PtNi nanoparticles on NiFe layered double hydroxide nanosheets as a bifunctional catalyst for hybrid sodium-air batteries
	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
	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
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20561]
专题	2020专题
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.