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Appropriately hydrophilic/hydrophobic cathode enables high-performance aqueous zinc-ion batteries
Zhang, Xiaotan; Li, Jiangxu; Ao, Huaisheng; Liu, Dongyan; Shi, Lei; Wang, Chengming; Zhu, Yongchun; Qian, Yitai
2020-09-01
Source PublicationENERGY STORAGE MATERIALS
Volume30Pages:337-345
AbstractOrganic batteries with improved electrode wettability will exhibit a better electrochemical performance. How about the relationship between electrode wettability and battery performance in aqueous batteries? Here the effect of cathode wettability in aqueous zinc-ion batteries (AZIBs) on the zinc-ion diffusion and charge transfer based on a research platform of cellulose nanowhiskers (CNWs)/graphene/MnO2 wire-in-scroll nanowires with water contact angles turning from 64.70 +/- 3.72 degrees to 115.85 +/- 3.36 degrees as cathodes for AZIBs has been investigated, where the corresponding battery performance shows a parabola trend with the peak in 103.04 +/- 2.91 degrees. The cathode achieves a high capacity of 384 mAh g(-1) at 1 C and features an ultra-long lifetime of over 5000 cycles at 20 C, representing excellent Zn storage performance. A combination of experimental measurements and density functional theory calculations suggests that increased cathode hydrophobicity forces hydrated Zn2+ desolvation at electrode-electrolyte interface, facilitating zinc-ion insertion into host materials, yet extremely hydrophobic cathode leads to sluggish electrochemical kinetics. This study opens a new idea in the design of promising candidates for developing low cost and long lifespan batteries for aqueous systems.
DOI10.1016/j.ensm.2020.05.021
WOS IDWOS:000544760400007
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/82587
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Zhang, Xiaotan,Li, Jiangxu,Ao, Huaisheng,et al. Appropriately hydrophilic/hydrophobic cathode enables high-performance aqueous zinc-ion batteries[J]. ENERGY STORAGE MATERIALS,2020,30:337-345.
APA Zhang, Xiaotan.,Li, Jiangxu.,Ao, Huaisheng.,Liu, Dongyan.,Shi, Lei.,...&Qian, Yitai.(2020).Appropriately hydrophilic/hydrophobic cathode enables high-performance aqueous zinc-ion batteries.ENERGY STORAGE MATERIALS,30,337-345.
MLA Zhang, Xiaotan,et al."Appropriately hydrophilic/hydrophobic cathode enables high-performance aqueous zinc-ion batteries".ENERGY STORAGE MATERIALS 30(2020):337-345.
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