Pei Xian-Yinan, Mo Dong-Chuan, Lyu Shu-Shen, Zhang Jian-Hui, Fu Yuan-Xiang
School of Chemical Engineering and Technology, Sun Yat-sen University Guangzhou 510275 P. R. China
Guangdong Engineering Technology Research Centre for Advanced Thermal Control Material and System Integration (TCMSI) Guangzhou 510275 P. R. China.
RSC Adv. 2018 Aug 10;8(50):28518-28524. doi: 10.1039/c8ra03051k. eCollection 2018 Aug 7.
MnO micrometer particles with a two-stage structure (composed of mass nanoparticles) were produced a one-step hydrothermal method using histidine and potassium permanganate (KMnO) as reagents, with subsequent calcination in a nitrogen (N) atmosphere. When the MnO micrometer particles were utilized in lithium-ion batteries (LIBs) as anode materials, the electrode showed a high reversible specific capacity of 747 mA h g at 100 mA g after 100 cycles, meanwhile, the electrode presented excellent rate capability at various current densities from 100 to 2000 mA g (∼203 mA h g at 2000 mA g). This study developed a new approach to prepare two-stage structure micrometer MnO particles and the sample can be a promising anode material for lithium-ion batteries.
采用一步水热法，以组氨酸和高锰酸钾（KMnO₄）为试剂制备了具有两级结构（由大量纳米颗粒组成）的MnO微米颗粒，随后在氮气（N）气氛中进行煅烧。当将MnO微米颗粒用作锂离子电池（LIBs）的负极材料时，该电极在100 mA g下循环100次后显示出747 mA h g的高可逆比容量，同时，该电极在100至2000 mA g的各种电流密度下均表现出优异的倍率性能（在2000 mA g时约为203 mA h g）。本研究开发了一种制备两级结构微米MnO颗粒的新方法，该样品有望成为锂离子电池的负极材料。
