副教授
硕士生导师
教师拼音名称:zhangzhonghua
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所在单位:新能源材料与器件教研室
学历:博士研究生
办公地点:材料学院楼215A
性别:男
联系方式:15092410550
学位:工学博士
职称:副教授
毕业院校:中国科学院大学
学科:材料科学与工程其他专业
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2023-09-15 2023 年度山东省优秀研究生导师
2022-12-30 2022年山东省优秀硕士学位论文指导教师
2022-03-01 2021年度校级先进工作者
2020-06-01 2019年度校级先进工作者
最后更新时间:..
关键字:Lithium-ion batteries;Aluminum nitride - Anodes - Carbon - Costs - Doping (additives) - Ions - Iron oxides - Magnetite - Magnetite nanoparticles - Nitrogen - Synthesis (chemical) - Temperature
摘要:By virtue of the natural abundance, environmental benignity, and high theoretical capacity, there is an increasing research attention on magnetite micro-/nano-structures serving as alternative anode materials for lithium-ion batteries (LIBs). The facile and efficient synthetic methods are still of urgency and challenging for their mass production. Herein, a low-temperature oxidation accompanied by a dicyandiamide-vapor nitridation strategy is proposed to synthesize ultrathin nitrogen-doped carbon layer wrapping porous magnetite nanoparticle (Fe<inf>3</inf>O<inf>4</inf>@NC) networks. As the synthesis approach only contains two-step annealing process and only commercial FeC<inf>2</inf>O<inf>4</inf>⋅2H<inf>2</inf>O and dicyandiamide are utilized, the as-developed approach is facile, low cost, and could effectively reduce the pollution and enhance the atom economy. When served as anode materials for LIBs, the porous Fe<inf>3</inf>O<inf>4</inf>@NC electrodes exhibit superior charge/discharge performances at high current density (847.5 mAh g<sup>−1</sup> at 10.0 A g<sup>−1</sup>) and remarkable long-term cycling stability (a high specific capacity of 1125.7 mAh g<sup>−1</sup> remains even after 600 cycles at 1.0 A g<sup>−1</sup>), outperforming most of Fe<inf>3</inf>O<inf>4</inf>/carbon-based structures. The as-proposed mass production synthetic method can be expected to pave a new avenue to design high-performance anode materials for various battery applications.<br/> © 2019 Elsevier B.V.
卷号:505
期号:无
是否译文:否