青岛科技大学  English 
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副教授 硕士生导师  

教师拼音名称:yujianhua

学历:博士研究生

学位:工学博士

职称:副教授

毕业院校:中科院上海硅酸盐研究所

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2020-06-08 青岛科技大学毕业生最喜爱的老师

2019-12-31 青岛科技大学先进工作者

2016-12-31 青岛科技大学先进工作者

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High-performance flexible zinc-air batteries with layered Zn/C3N4-carbon nanotube/polyvinyl alcohol-epoxy resin composite: In-situ crosslinking and electrode-electrolyte integration

关键字:EFFICIENT; NITROGEN

摘要:In this study, we have successfully developed a layered, porous anode-electrolyte integrated flexible solid-state zinc-air battery (ZAB) using a Zn/C3N4-CNT/PVA-ER composite. The solid electrolyte is synthesized by incorporating epoxy resin (ER) into PVA, and its morphology, microstructure, mechanical properties, and water absorption/retention capabilities are thoroughly characterized. The resulting PVA-ER solid electrolyte exhibits a porous, oriented structure with excellent mechanical properties, including a tensile strain of 170 % and a stress of 0.37 MPa. It also shows remarkable resilience, withstanding various deformations such as compression, bending, and twisting, along with a high-water absorption capacity of 223.5 g g(-1) and a high OH- conductivity of 58.5 mS cm(-1). The C3N4-carbon nanotube (CNT) composite membrane is successfully prepared and applied as the anode, forming efficient ion diffusion channels through cross-linking with PVA-ER chains. The flexible ZABs based on Zn/C3N4-CNT/PVA-ER demonstrated outstanding performance, including a long operational life of over 74 h, a high-power density of 112.6 mW cm(-2), and a specific capacity of 770.8 mAh g(-1). This work introduces innovative in-situ crosslinking and electrode-electrolyte integration strategies, advancing the development of high-performance flexible ZABs and paving the way for their application in wearable electronics and biologically inspired systems.

卷号:625

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