Smartly Designed Hierarchical MnO2@Fe3O4/CNT Hybrid Films as Binder‐free Anodes for Superior Lithium Storage,Chemistry - An Asian Journal

当前位置： X-MOL 学术 › Chem. Asian J. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Smartly Designed Hierarchical MnO2@Fe3O4/CNT Hybrid Films as Binder‐free Anodes for Superior Lithium Storage
Chemistry - An Asian Journal ( IF 3.5 ) Pub Date : 2018-09-19 , DOI: 10.1002/asia.201800922
Du-Juan Yan ₁ , Xiao-Dong Zhu _{2,

3} , Xiao-Tian Gao ₁ , Liang-Liang Gu ₁ , Yu-Jie Feng ₃ , Ke-Ning Sun _{2,

3}

Affiliation

Nowadays, the development of advanced anode materials is highly desirable for the increasing demand for high‐performance lithium‐ion batteries (LIBs). Nanostructured MnO₂ has received utmost attention due to high theoretical capacity (1230 mA h g⁻¹), abundant resources, environmental benignity, and shortened electron and ion diffusion paths. Unfortunately, poor electronic conductivity and strong aggregation inclination of MnO₂ nanostructures result in disappointing electrochemical performances, which restrict their practical application as sole institute. Here, we propose smartly designed MnO₂@Fe₃O₄/CNT hybrid films, in which MnO₂ nanosheets, Fe₃O₄ nanoparticles and CNTs are hierarchically assembled in a unique stage of nanosheets–nanoparticles–nanotubes. The resulting MnO₂@Fe₃O₄/CNT hybrid films can be directly used as anodes without any polymer binders, and exhibit significant synergistic interactions among three components, achieving excellent reversible capacity and rate performance.

中文翻译：

巧妙设计的分层MnO2 @ Fe3O4 / CNT杂化薄膜作为无粘结剂阳极，可实现出色的锂存储

如今，对于高性能锂离子电池（LIB）的需求不断增长，非常需要开发先进的阳极材料。纳米结构的MnO ₂由于具有较高的理论容量（1230 mA h g ^-1），丰富的资源，环境友好性以及缩短的电子和离子扩散路径而受到了极大的关注。不幸的是，较差的电导率和MnO ₂纳米结构的强聚集倾向导致令人失望的电化学性能，这限制了它们作为唯一研究所的实际应用。在这里，我们提出了设计精巧的MnO ₂ @Fe ₃ O ₄ / CNT杂化膜，其中MnO ₂纳米片Fe₃ O ₄纳米颗粒和CNT是在纳米片-纳米颗粒-纳米管的独特阶段中进行分层组装的。所得的MnO ₂ @Fe ₃ O ₄ / CNT杂化膜可直接用作阳极，而无需任何聚合物粘合剂，并且在三种组分之间显示出显着的协同作用，从而实现了优异的可逆容量和倍率性能。

更新日期：2018-09-19

点击分享查看原文

点击收藏

阅读更多本刊最新论文