High-performing rechargeable/flexible zinc-air batteries by coordinated hierarchical Bi-metallic electrocatalyst and heterostructure anion exchange membrane

doi:10.1016/j.nanoen.2019.104021

	High-performing rechargeable/flexible zinc-air batteries by coordinated hierarchical Bi-metallic electrocatalyst and heterostructure anion exchange membrane
	Xu, Nengneng; Zhang, Yanxing; Wang, Min; Fan, Xiujun; Zhang, Tao; Peng, Luwei; Zhou, Xiao-Dong; Qiao, Jinli
刊名	NANO ENERGY
	2019-11-30
卷号	65
关键词	Bifunctional catalyst High power density Rechargeable zinc-air battery Flexible all-solid-state zinc-air battery Wearable electronics
ISSN号	2211-2855
DOI	10.1016/j.nanoen.2019.104021
文献子类	Article
英文摘要	Due to the lack of highly efficient and low-cost oxygen reduction reaction/oxygen evolution reaction (ORR/ OER) catalyst and alkaline anion exchange membrane (AEM), advanced rechargeable zinc-air batteries are largely hindered in many applications from wearable electronics to electric vehicles. Herein, a hybrid of porous Co3O4 anchoring on MnO2, then interpenetrating with CNTs (Co3O4/MnO2-CNTs) is synthesized via facile hydrothermal process, and an AEM (CS/EMImC-Co-EP/GO) employing semi-interpenetrating network structure is fabricated with a simple solution-casting method. The porous nanoparticles and chrysalis-like hybrid as well as strong bi-metallic coupling effect build highways and buffer zones for reactant and electrons transfer for ORR/ OER. In addition, due to the competition of bottom Co atoms, the density functional theory (DFT) proves that the neighbor Mn sites (Mn1 and Mn2) of the MnO2(110) surface are evidently activated, which prompts the catalytic activity of hybrids by making the Mn1, Mn2 3d density of states move forward lower energy entirely. As a result, Co3O4/MnO2-CNTs exhibit superior ORR/OER activities with the low potential difference (Delta E) of 0.85 V and impressive performances in rechargeable aqueous zinc-air batteries (power density: 534 mW cm(-2)). Moreover, combining AEM integrated into rechargeable flexible all-solid-state zinc-air batteries and stack, the enhancement natures of wearable devices are achieved even under different bending angles benefiting from high hydroxyl anion conductivity and remarkable flexibility of AEM semi-interpenetrating network, which accelerates ion transport by the synergy of hopping and vehicle mechanisms. Furthermore, the flexible all-solid-state zinc-air batteries show excellent tolerance toxicity of CO2.
WOS关键词	BI-FUNCTIONAL ELECTROCATALYSTS ; BIFUNCTIONAL OXYGEN CATALYST ; CATHODE CATALYSTS ; REDUCTION ; EFFICIENT ; EVOLUTION ; GRAPHENE ; POLYMER ; WATER ; SUPERCAPACITORS
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	ELSEVIER
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/27511]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 GB/T 7714	Xu, Nengneng,Zhang, Yanxing,Wang, Min,et al. High-performing rechargeable/flexible zinc-air batteries by coordinated hierarchical Bi-metallic electrocatalyst and heterostructure anion exchange membrane[J]. NANO ENERGY,2019,65.
APA	Xu, Nengneng.,Zhang, Yanxing.,Wang, Min.,Fan, Xiujun.,Zhang, Tao.,...&Qiao, Jinli.(2019).High-performing rechargeable/flexible zinc-air batteries by coordinated hierarchical Bi-metallic electrocatalyst and heterostructure anion exchange membrane.NANO ENERGY,65.
MLA	Xu, Nengneng,et al."High-performing rechargeable/flexible zinc-air batteries by coordinated hierarchical Bi-metallic electrocatalyst and heterostructure anion exchange membrane".NANO ENERGY 65(2019).