• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Electrochemical Science >Porous Carbon Derived from Petals of Yulan Magnolia Doped with Ni and NiO as Anodes for Lithium Ion Battery
【24h】

Porous Carbon Derived from Petals of Yulan Magnolia Doped with Ni and NiO as Anodes for Lithium Ion Battery

机译：锂离子电池阳极掺杂镍和镍氧的玉兰木兰花瓣衍生的多孔碳

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Doping transition metal in biomass-derived carbon is a very common method to preparing anodes forlithium-ion batteries (LIBs). In this study, porous carbon derived from the petals of Yulan magnolia wasdoped with metallic nickel firstly. Thus, the metallic nickel core in the above prepared precursor wascovered by a graphite thin shell, which enabled the core to endure hydrochloric acid etching to somedegree. To improve its electrochemical ability as anodes for LIBs, the precursor was oxidized in air atdifferent temperatures from 380 °C to 480 °C. The effects of oxidation temperature to the morphologies,phase, BET surface areas were characterized via TEM, XRD, nitrogen adsorption isotherm, etc. Andthen the materials were compared as anodes for LIBs. It was found that the material oxidized at 430 °Cdelivered a discharge capacity of 386.9 mAh g-1 after 100 cycles at 100 mA g-1, which was superior tothe electrochemical performance of other composites. The reasons were further elaborated by voltageprofile, CV, and XPS.
机译：在生物质衍生的碳中掺杂过渡金属是制备锂离子电池（LIB）阳极的一种非常常用的方法。本研究首先从玉兰玉兰花瓣衍生的多孔碳中掺杂了金属镍。因此，上述制备的前体中的金属镍核被石墨薄壳覆盖，这使得核能够在一定程度上经受盐酸蚀刻。为了提高其作为LIB阳极的电化学能力，将前体在380°C至480°C的不同温度下于空气中氧化。通过TEM，XRD，氮吸附等温线等手段表征了氧化温度对形貌，相，BET表面积的影响。然后比较了该材料作为锂离子电池的阳极。发现在430°C氧化的材料在100 mA g-1下循环100次后的放电容量为386.9 mAh g-1，这优于其他复合材料的电化学性能。电压曲线，CV和XPS进一步阐明了原因。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号