气候变化领域集成服务门户(CCPortal): Tailoring the linking patterns of polypyrene cathodes for high-performance aqueous Zn dual-ion batteries

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DOI	10.1039/d0ee03356a
	Tailoring the linking patterns of polypyrene cathodes for high-performance aqueous Zn dual-ion batteries
	Zhang C.; Ma W.; Han C.; Luo L.-W.; Daniyar A.; Xiang S.; Wu X.; Ji X.; Jiang J.-X.
发表日期	2021
ISSN	17545692
起始页码	462
结束页码	472
卷号	14 期号:1
英文摘要	Although the utilization of mildly acidic electrolyte can enhance the stability and reversibility of Zn anode, it is still challenging to achieve long cycling life for aqueous Zn batteries at low currents, due to the structural instability of cathode materials during the charge/discharge processes. Herein, we report a series of polypyrenes with different linking patterns and electronic structures as Cl-hosting organic cathodes for aqueous Zn dual-ion batteries (AZDIBs). The comparative study demonstrates that the electronic structures are pivotal to the redox activity of the polypyrenes, which can be tuned by altering the linking patterns on the pyrene unit. Owing to the high surface area, the highly delocalized HOMO distribution, the high HOMO level and the narrow band gap, the polymer CLPy with 1,3,6,8-linking pattern delivers a much higher capacity of 180 mA h g-1 than the two linear counterparts (24 mA h g-1 for LPy-1 and 44 mA h g-1 for LPy-2). Impressively, CLPy exhibits ultra-stable cyclabilities with the capacity retentions of 97.4% after 800 cycles at 50 mA g-1 and 96.4% after 38?000 cycles at 3 A g-1. CLPy also shows a low self-discharge rate with around 90% capacity retention after resting for 28 days. The excellent electrochemical performance demonstrates that CLPy can be a promising cathode material for high-performance AZDIBs. © The Royal Society of Chemistry.
英文关键词	Cathode materials; Electrolytes; Electronic structure; Energy gap; Redox reactions; Secondary batteries; Acidic electrolytes; Capacity retention; Charge/discharge; Comparative studies; Electrochemical performance; High surface area; Organic cathodes; Structural instability; Cathodes; aqueous solution; comparative study; electrode; electrolyte; fuel cell; performance assessment; polymer; redox conditions
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190813
作者单位	Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University), Ministry of Education, Key Laboratory for Macromolecular Science of Shaanxi Province, Shaanxi Key Laboratory for Advanced Energy Devices, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710062, China; Department of Chemistry, Oregon State University, Corvallis, OR 97331-4003, United States
推荐引用方式 GB/T 7714	Zhang C.,Ma W.,Han C.,et al. Tailoring the linking patterns of polypyrene cathodes for high-performance aqueous Zn dual-ion batteries[J],2021,14(1).
APA	Zhang C..,Ma W..,Han C..,Luo L.-W..,Daniyar A..,...&Jiang J.-X..(2021).Tailoring the linking patterns of polypyrene cathodes for high-performance aqueous Zn dual-ion batteries.Energy & Environmental Science,14(1).
MLA	Zhang C.,et al."Tailoring the linking patterns of polypyrene cathodes for high-performance aqueous Zn dual-ion batteries".Energy & Environmental Science 14.1(2021).