Li Yi, Gao Yan, Qi Hui, Yu Kaifeng, Liang Ce
Key Laboratory of Automobile Materials, Ministry of Education, College of Materials Science and Engineering, Jilin University Changchun 130025 PR China
The Second Hospital of Jilin University Changchun 130041 PR China.
RSC Adv. 2018 Sep 25;8(58):33019-33024. doi: 10.1039/c8ra06169f. eCollection 2018 Sep 24.
ZnO is considered as a substitute for the next generation of lithium ion battery anode materials because of its high volumetric energy density and abundant resources. In this work, we fabricate a new material that has nanorod-like ZnO distributed in a disorderly fashion on the surface of a rice husk-derived carbon skeleton. Rice husk as a carbon source is suitable for easing the pressure on the environment and improving the utilization of agricultural residues. Its unique interconnected hollow nanosphere structured skeleton provides better support for ZnO loading and electron transport. The ZnO/rice husk-based carbonaceous nanosphere composite samples were characterised by XRD, Raman, SEM and TEM. When used as an anode for lithium-ion batteries, the material exhibited promising Li storage properties and a high specific charge capacity of 920 mA h g at 0.2C after 100 cycles.
由于具有高体积能量密度和丰富的资源，氧化锌被认为是下一代锂离子电池负极材料的替代品。在这项工作中，我们制备了一种新材料，其具有以无序方式分布在稻壳衍生碳骨架表面的纳米棒状氧化锌。稻壳作为碳源适合于缓解环境压力并提高农业残留物的利用率。其独特的相互连接的中空纳米球结构骨架为氧化锌负载和电子传输提供了更好的支撑。通过X射线衍射、拉曼光谱、扫描电子显微镜和透射电子显微镜对基于氧化锌/稻壳的碳质纳米球复合样品进行了表征。当用作锂离子电池的负极时，该材料表现出有前景的锂存储性能，在0.2C下100次循环后具有920 mA h g的高比充电容量。
