Simple and efficient fabrication of pomegranate-like Fe2O3@C on carbon cloth as an anode for lithium-ion batteries
Simple and efficient fabrication of pomegranate-like Fe2O3@C on carbon cloth as an anode for lithium-ion batteries
复制标题
简单高效地在碳布上制备石榴状 Fe2O3@C 作为锂离子电池负极
DOI：
10.1016/j.jallcom.2018.06.316
复制
发表时间：
2018-10
影响因子：
6.2
通讯作者：
Zhang Haiyan
中科院分区：
文献类型：
--
作者：
Li Zhaopeng;Li Liuqing;Zhong Weihao;Cheng Ao;Fu Wenhao;Li Zhenghui;Zhang Haiyan
通过浸涂和水热合成相结合的方法合成了碳布（CC）上的石榴状Fe2O3@C纳米颗粒，作为锂离子电池的阳极。海藻酸钠（SA）与Fe 3+之间的自发交联反应首先产生螯合物，然后在简单的水热处理后将SA-Fe 3+螯合物转化为Fe2O3@C纳米颗粒。Fe2O3@C纳米粒子具有类似于P2 O3的形貌，平均直径为118 nm，由较小的Fe2O3@C次级纳米粒子（13.7 nm）组成。这种分级纳米结构可以增加Fe2O3@C/CC电极的可及表面积，从而提高Li+插入/脱嵌反应的电化学效率。此外，通过仔细控制浸涂时间，Fe2O3@C纳米颗粒单独且均匀地分布在CC表面上，这为Li+插入提供了膨胀空间，并保护电极免受结构裂纹的影响。由于这些结构特征，Fe2O3@C/CC负极材料显示出用于锂离子电池的上级电化学性能。在0.2 A g-1的电流密度下，首次放电容量高达1006 mAh g-1，并且在100次充放电循环后，其保持高达1091 mAh g-1，这意味着稳定的循环能力。
Pomegranate-like Fe2O3@C nanoparticles on carbon cloth (CC) as an anode for lithium-ion batteries are synthesized via a combination of dip-coating and hydrothermal synthesis. The spontaneous crosslinking reaction between sodium alginate (SA) and Fe3+first creates a chelate compound, and then the SA-Fe3+chelate is converted to Fe2O3@C nanoparticles after a simple hydrothermal treatment. The Fe2O3@C nanoparticles exhibit pomegranate-like morphology with an average diameter of 118 nm and are composed of smaller Fe2O3@C secondary nanoparticles of 13.7 nm. Such a hierarchical nanostructure can increase the accessible surface area of the Fe2O3@C/CC electrode, leading to enhanced electrochemical efficiency for the Li+insertion/deinsertion reaction. Furthermore, by carefully controlling dip-coating time, the Fe2O3@C nanoparticles are individually and uniformly distributed on the CC surface, which supplies expansion space for Li+insertion and protects the electrode from structural cracks. Owing to these structural characteristics, the Fe2O3@C/CC anode material shows superior electrochemical properties for lithium-ion batteries. The first discharge capacity is as high as 1006 mAh g−1at the current density of 0.2 A g−1, and it remains up to 1091 mAh g−1after 100 charge/discharge cycles, implying a stable cycling ability.
登录
查看更多内容
低 Fe3O4 含量的珠状结构 CNTs-Fe3O4@C 作为负极材料，在锂离子电池中具有额外增强的性能
影响因子：
3.9
作者：
Kierzek, Krzysztof;Liu, Wenbin;Tang, Tao;Mijowska, Ewa
通讯作者：
Mijowska, Ewa
影响因子：
6.7
作者：
Yanhui Sun;Shan Liu;Feng-Chen Zhou;J. Nan
通讯作者：
Yanhui Sun;Shan Liu;Feng-Chen Zhou;J. Nan
影响因子：
27.8
作者：
Ning Zhang;Xiaopeng Han;Yong-chang Liu;Xiaofei Hu;Qing Zhao;Jun Chen
通讯作者：
Ning Zhang;Xiaopeng Han;Yong-chang Liu;Xiaofei Hu;Qing Zhao;Jun Chen
影响因子：
32.5
作者：
Jixin Zhu;Z. Yin;Dan Yang;T. Sun;Hong Yu;H. Hoster;H. Hng;Hua Zhang;Q. Yan
通讯作者：
Jixin Zhu;Z. Yin;Dan Yang;T. Sun;Hong Yu;H. Hoster;H. Hng;Hua Zhang;Q. Yan
影响因子：
9.5
作者：
Xiao, Li;Wu, Dongqing;Feng, Xinliang
通讯作者：
Feng, Xinliang