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A new binder-free and conductive-additive-free TiO2/WO3-W integrative anode material produced by laser ablation
Journal of Power Sources ( IF 9.2 ) Pub Date : 2018-01-04 , DOI: 10.1016/j.jpowsour.2017.12.063
Yibo Su , Hongjun Zhang , Peng Liang , Kai Liu , Mingyong Cai , Zeya Huang , Chang-An Wang , Minlin Zhong

Although transition metal oxides anodes have attracted lots of attention, there are still many problems to be resolved. Complicated fabrication process, high cost and poor electrochemical performances are the most important ones, together hindering transition metal oxides anodes for practical use. Herein, we provide a new approach to fabricate a binder-free and conductive-additive-free TiO2/WO3-W integrative anode material through the nanosecond laser ablation and dip-coating technology, which simplifies the entire anode preparation process with no need for a conventional tape-casting procedure. Using this method, great time cost, machine cost and labor cost related to mixing and tape-casting process can be saved on the basis of good electrochemical performances. The prepared TiO2/WO3-W integrative anode realizes a first Coulombic efficiency of 75.6% and attains to a stable capacity within the first five cycles. It can still maintain a capacity of 600 mAh g−1 in the range of 0.01–3 V vs. Li+/Li at a current rate of 0.2 C after 500 cycles. This work offers a new way to achieve a fast fabrication of the integrative anode for lithium ion battery, which is universal for other transition metals (such as Fe, Cu, Ni, Co, Mo, W etc.).



中文翻译:

激光烧蚀制备的新型无粘结剂,无导电添加剂的TiO 2 / WO 3 -W集成阳极材料

尽管过渡金属氧化物阳极引起了很多关注,但仍有许多问题需要解决。最重要的是复杂的制造过程,高成本和较差的电化学性能,这些因素共同阻碍了过渡金属氧化物阳极的实用化。在此,我们提供了一种通过纳秒激光烧蚀和浸涂技术来制造无粘合剂和无导电添加剂的TiO 2 / WO 3 -W集成阳极材料的新方法,从而简化了整个阳极制备过程,而无需用于常规的磁带播放过程。使用这种方法,基于良好的电化学性能,可以节省与混合和流延过程相关的大量时间成本,机器成本和人工成本。制备的TiO2 / WO 3 -W集成阳极实现了最初的库仑效率为75.6%,并在前五个循环内达到了稳定的容量。在500次循环后,在0.2 C的电流速率下,它仍可以在0.01-3 V vs. Li + / Li的范围内保持600 mAh g -1的容量。这项工作为实现锂离子电池集成阳极的快速制造提供了一种新方法,这种阳极对于其他过渡金属(例如Fe,Cu,Ni,Co,Mo,W等)是通用的。

更新日期:2018-01-04
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