Cao Shaomei, Feng Xin, Song Yuanyuan, Liu Hongjiang, Miao Miao, Fang Jianhui, Shi Liyi
Research Center of Nano Science and Technology, ‡Department of Chemistry, College of Science, and ∥School of Materials Sciences and Engineering, Shanghai University , Shanghai 200444, P. R. China.
ACS Appl Mater Interfaces. 2016 Jan 20;8(2):1073-9. doi: 10.1021/acsami.5b10648. Epub 2016 Jan 7.
Flexible free-standing carbonized cellulose-based hybrid film is integrately designed and served both as paper anode and as lightweight current collector for lithium-ion batteries. The well-supported heterogeneous nanoarchitecture is constructed from Li4Ti5O12 (LTO), carbonized cellulose nanofiber (C-CNF) and carbon nanotubes (CNTs) using by a pressured extrusion papermaking method followed by in situ carbonization under argon atmospheres. The in situ carbonization of CNF/CNT hybrid film immobilized with uniform-dispersed LTO results in a dramatic improvement in the electrical conductivity and specific surface area, so that the carbonized paper anode exhibits extraordinary rate and cycling performance compared to the paper anode without carbonization. The flexible, lightweight, single-layer cellulose-based hybrid films after carbonization can be utilized as promising electrode materials for high-performance, low-cost, and environmentally friendly lithium-ion batteries.
柔性自支撑碳化纤维素基混合薄膜经过一体化设计，可同时用作锂离子电池的纸质阳极和轻质集流体。通过压力挤出造纸法，随后在氩气气氛下进行原位碳化，由Li4Ti5O12（LTO）、碳化纤维素纳米纤维（C-CNF）和碳纳米管（CNT）构建出结构良好的异质纳米结构。固定有均匀分散的LTO的CNF/CNT混合薄膜的原位碳化显著提高了电导率和比表面积，因此与未碳化的纸质阳极相比，碳化后的纸质阳极表现出非凡的倍率性能和循环性能。碳化后的柔性、轻质单层纤维素基混合薄膜可作为高性能、低成本和环境友好型锂离子电池的有前景的电极材料。
