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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
2019-11-30
Source PublicationNANO ENERGY
ISSN2211-2855
Volume65
SubtypeArticle
AbstractDue 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.
KeywordBifunctional catalyst High power density Rechargeable zinc-air battery Flexible all-solid-state zinc-air battery Wearable electronics
DOI10.1016/j.nanoen.2019.104021
WOS KeywordBI-FUNCTIONAL ELECTROCATALYSTS ; BIFUNCTIONAL OXYGEN CATALYST ; CATHODE CATALYSTS ; REDUCTION ; EFFICIENT ; EVOLUTION ; GRAPHENE ; POLYMER ; WATER ; SUPERCAPACITORS
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
PublisherELSEVIER
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27511
Collection中国科学院上海硅酸盐研究所
Recommended Citation
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).
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