Key Lab for Green Chemical Process of Ministry of Education, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, People's Republic of China. Department of Physics & Astronomy, University of Wyoming, Laramie, WY 82071, USA.
Nanotechnology. 2016 Oct 14;27(41):415401. doi: 10.1088/0957-4484/27/41/415401. Epub 2016 Sep 2.
SnO2 is an attractive anode material for lithium-ion batteries (LIBs) due to its high theoretical specific capacity (1491 mAh g(-1)), low cost, and environmental benignity. The main challenges for SnO2 anodes are their low intrinsic conductivity and poor cycling stability associated with their large volume changes during the charge and discharge process. Here, we present a simple chemical vapor deposition method to fabricate three-dimensional SnO2/carbon on Cu foam electrodes for LIBs. Such a three-dimensional electrode combines multiple advantages, including a continuous electrically conductive network, short pathways for electron transport and ion diffusion, and porous space to allow for the volume expansion of SnO2 nanoparticles. With this anode, superior electrochemical performance is achieved with a high reversible specific capacity of 1171 mAh g(-1) at a current density of 100 mA g(-1). A stable cycling performance as well as an excellent rate capability is also achieved. These outstanding lithium-storage properties suggest the strategy is a reliable approach for fabricating high-performance LIB electrodes.
SnO2 因其高理论比容量（1491 mAh g(-1)）、低成本和环境友好性而成为锂离子电池（LIBs）有吸引力的阳极材料。SnO2 阳极的主要挑战是其固有电导率低，循环稳定性差，这与其在充放电过程中的大体积变化有关。在这里，我们提出了一种简单的化学气相沉积方法，在 Cu 泡沫电极上制备用于 LIBs 的三维 SnO2/碳。这种三维电极结合了多个优点，包括连续的导电网络、电子传输和离子扩散的短路径以及允许 SnO2 纳米颗粒体积膨胀的多孔空间。使用这种阳极，在 100 mA g(-1)的电流密度下，可实现高达 1171 mAh g(-1)的高可逆比容量的优异电化学性能。还实现了稳定的循环性能和优异的倍率性能。这些出色的储锂性能表明该策略是制造高性能 LIB 电极的可靠方法。
