基于锂离子全电池的玉米秸秆碳-ZnO复合材料的储锂性能研究
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摘要
以玉米秸秆为原料,采用高温固相法和水热法成功制备了玉米秸秆碳-ZnO复合材料。分析表明,直径为100 nm左右的氧化锌纳米棒均匀担载在玉米秸秆碳材料的孔道中。以制备的玉米秸秆碳-ZnO复合材料为负极,商业钴酸锂为正极构建锂离子全电池,测试结果表明,玉米秸秆碳-ZnO复合材料作为锂离子电池负极材料时展现出了优异的储锂性能,0.1 C充放电循环100周后,复合材料的可逆放电容量可保持在525 m Ah/g。
Using cornstalks as raw material,a stacking structured cornstalk carbon-ZnO composite has been synthesized through carbonizing and hydrothermal method. The obtained ZnO particles have a size of ~50 nm in diameter,which are distributed uniformly in the networks of cornstalk carbon. Using cornstalk carbon-ZnO as an anode material and LiCoO_2 as a cathode,lithium ion full cells are assembled. Cornstalk carbon-ZnO composite shows good electrochemical performance. After 100 cycles at 0.1 C,the discharge capacity is still525 m Ah/g.
Using cornstalks as raw material,a stacking structured cornstalk carbon-ZnO composite has been synthesized through carbonizing and hydrothermal method. The obtained ZnO particles have a size of ~50 nm in diameter,which are distributed uniformly in the networks of cornstalk carbon. Using cornstalk carbon-ZnO as an anode material and LiCoO_2 as a cathode,lithium ion full cells are assembled. Cornstalk carbon-ZnO composite shows good electrochemical performance. After 100 cycles at 0.1 C,the discharge capacity is still525 m Ah/g.
引文
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[2]袁光辉,金华峰,张永光.ZnO/石墨烯纳米复合材料一步水热法制备及电化学性能研究[J].化工新型材料,2017(7):66-68.
[3]孙涛,杨琪,喻佳瑜,等.ZnO-C三维网络结构涂层的制备及其储锂性能研究[J].无机材料学报,2017,32(5):483-488.
[4]王艳香,陈凌燕,孙健,等.水热法制备ZnO纳米棒及其电池性能的研究[J].陶瓷学报,2017,38(5):692-699.
[5]ZHANG H,WANG Y,ZHAO W,et al.MOF-Derived ZnO Nanoparticles Covered by N-Doped Carbon Layers and Hybridized on Carbon Nanotubes for Lithium-Ion Battery Anodes[J].ACS applied materials&interfaces,2017,9(43):37813-37822.
[6]蒋志军,张慧,王乾,等.氧化锌在镍氢动力电池中的应用[J].电池,2017,47(2):97-100.
[7]ZHANG Y,LU Y,FENG S,et al.On-site evolution of ultrafine ZnO nanoparticles from hollow metal–organic frameworks for advanced lithium ion battery anodes[J].Journal of Materials Chemistry A,2017,5(43):22512-22518.
[8]邱迎新,王树林,陈蒙.氧化锌/活性炭复合材料的制备与性能表征[J].化工新型材料,2016,44(3):79-81.
[9]张利锋,张金振,宋巧兰,等.水热法制备ZnO/石墨烯复合材料及其电化学性能研究[J].人工晶体学报,2014,43(12):3235-3240.
[10]付家鹏,罗磊,陈克,等.氧化锌纳米纤维的制备、表征及电化学性能研究[J].电源技术,2015,39(4):749-752.
[11]YUAN G H,WANG G,WANG H,et al.Synthesis and electrochemical investigation of radial ZnO microparticles as anode materials for lithium-ion batteries[J].Ionics,2015,21:365-371.