Yu Kaifeng, Wang Jingjing, Song Kexian, Wang Xiaofeng, Liang Ce, Dou Yanli
Key Laboratory of automobile Materials, Ministry of Education, and College of Materials Science and Engineering, Jilin University, Changchun 130025, China.
State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130025, China.
Nanomaterials (Basel). 2019 Jan 12;9(1):93. doi: 10.3390/nano9010093.
As a most attractive renewable resource, biomass has the advantages of low pollution, wide distribution and abundant resources, promoting its applications in lithium ion batteries (LIBs). Herein, cellulose-derived carbon nanospheres (CCS) were successfully synthesized by hydrothermal carbonization (HTC) from corn straw for use as an anode in LIBs. The uniform distribution and cross-linked structure of carbon nanospheres were obtained by carefully controlling reaction time, which could not only decrease the transport pathway of lithium ions, but also reduce the structural damage caused by the intercalation of lithium ions. Especially, obtained after hydrothermal carbonization for 36 h, those typical characteristics make it deliver excellent cycling stability as well as the notable specific capacity of 577 mA h g after 100 cycles at 0.2C. Hence, this efficient and environment-friendly method for the fabrication of CCS from corn straw could realize the secondary utilization of biomass waste, as well as serve as a new choice for LIBs anode materials.
作为一种极具吸引力的可再生资源，生物质具有污染低、分布广、资源丰富等优点，这推动了其在锂离子电池（LIBs）中的应用。在此，通过水热碳化（HTC）法成功地从玉米秸秆中合成了纤维素衍生的碳纳米球（CCS），用作LIBs的阳极。通过仔细控制反应时间，获得了碳纳米球的均匀分布和交联结构，这不仅可以减少锂离子的传输路径，还可以减少锂离子嵌入所造成的结构损伤。特别是，经过36小时水热碳化后得到的产物，这些典型特性使其在0.2C下循环100次后具有出色的循环稳定性以及577 mA h g的显著比容量。因此，这种由玉米秸秆制备CCS的高效且环保的方法，既可以实现生物质废弃物的二次利用，也可以作为LIBs阳极材料的新选择。
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