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DOI	10.1039/c8ee02892c
	A flexible rechargeable aqueous zinc manganese-dioxide battery working at-20 °c
	Mo F.; Liang G.; Meng Q.; Liu Z.; Li H.; Fan J.; Zhi C.
发表日期	2019
ISSN	17545692
起始页码	706
结束页码	715
卷号	12 期号:2
英文摘要	It remains a challenge to render aqueous batteries operating at subzero temperatures properly, not even to mention the maintenance of their flexibility and mechanical robustness. This fundamentally arises from the freezing of hydrogel electrolytes under such low temperature, resulting in performance deterioration and elasticity loss. Here we propose an intrinsically freeze-resistant flexible zinc manganese-dioxide battery (Zn-MnO 2 -B) comprising a designed anti-freezing hydrogel electrolyte which can preclude the ice crystallization of the hydrogel component and maintain a high ion conductivity even at-20 °C. Benefiting from exceptional freeze resistance, the fabricated anti-freezing Zn-MnO 2 -B (AF-battery) exhibits excellent electrochemical stability and mechanical durability at subzero temperatures. Even at-20 °C, the specific capacity of the AF-battery can retain over 80% with Coulombic efficiencies approaching ∼100%, compared to the thorough performance failure of the Zn-MnO 2 -B with traditional polyacrylamide (PAM) hydrogel electrolyte. More impressively, the flexibility of batteries can also be well maintained even under severe mechanical stresses at subzero temperatures, such as being bent, compressed, hammered or washed in an ice bath. Furthermore, the AF-battery sealed in an ice cube can be integrated in series to power a wristband of an electronic watch, LED lights and a 72 cm 2 electroluminescent panel. It is believed that this work opens new perspectives to develop anti-freezing batteries and would play the role of a model system for developing new hydrogel aqueous electrolytes for flexible batteries in extremely cold environments. © 2019 The Royal Society of Chemistry.
英文关键词	Deterioration; Electroluminescence; Electrolytes; Freezing; Hydrogels; Ice; Manganese oxide; Secondary batteries; Temperature; Coulombic efficiency; Electrochemical stabilities; Electroluminescent panels; Hydrogel electrolytes; Mechanical durability; Mechanical robustness; Performance deterioration; Sub-zero temperatures; Zinc compounds; aqueous solution; crystallization; design method; electrolyte; fuel cell; low temperature; manganese oxide; operations technology; performance assessment; zinc
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/189980
作者单位	Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, 999077, Hong Kong; Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng Jiangsu, 224051, China; Shenzhen Research Institute, City University of Hong Kong Nanshan District, Shenzhen, 518057, China
推荐引用方式 GB/T 7714	Mo F.,Liang G.,Meng Q.,et al. A flexible rechargeable aqueous zinc manganese-dioxide battery working at-20 °c[J],2019,12(2).
APA	Mo F..,Liang G..,Meng Q..,Liu Z..,Li H..,...&Zhi C..(2019).A flexible rechargeable aqueous zinc manganese-dioxide battery working at-20 °c.Energy & Environmental Science,12(2).
MLA	Mo F.,et al."A flexible rechargeable aqueous zinc manganese-dioxide battery working at-20 °c".Energy & Environmental Science 12.2(2019).