4.7 Article

Poplar branch bio-template synthesis of mesoporous hollow Co3O4 hierarchical architecture as an anode for long-life lithium ion batteries

期刊

CERAMICS INTERNATIONAL
卷 46, 期 18, 页码 29033-29040

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2020.08.074

关键词

Co3O4; Poplar branch; Hierarchical structure; Anode; Lithium ion battery

资金

  1. National Natural Science Foundation of China [21305033]
  2. Scientific and Technological Innovation Talents of Harbin [2016RAQXJ005]
  3. Young Innovation Talents of college in Heilongjiang Province [UNPYSCT2016074, UNPYSCT-2017121]
  4. Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University

向作者/读者索取更多资源

Mesoporous hollow hierarchical structures play an important role in enhancing the lithium storage performances of Co3O4 anode materials. In this work, Co3O4 with mesoporous hollow structure has been successfully fabricated by simple impregnation and subsequently air calcination using poplar branch as bio-template. The product calcined at 600 degrees C (PB-Co-600) perfectly duplicates the 3D aligned microchannels structure of poplar branch. Importantly, the wall of aligned microchannels in PB-Co-600 is constructed by a lot of irregular cross-linked Co3O4 nanoparticles and there are abundant mesopores on the surface. As an anode, it exhibits high reversible capacity and remarkable long-cycle stability. At 0.1 A g(-1), it can deliver a high specific capacity of 1153.7 mA h g(-1) after 100 cycles, and even at 1 A g(-1), the reversible specific capacity of 555.7 mA h g(-1) can be retained after cycling 1000 times. The excellent lithium storage performance of PB-Co-600 may be attributed to its unique hierarchical structure, which is not only favorable to the rapid transfer of substances and Li' ion diffusion, but also alleviates the volume change during the charge/discharge cycle. Furthermore, the existence of oxygen vacancies and pseudo-capacitance also contributes significantly to the superior lithium storage performance of the PB-Co-600 electrode. Therefore, the PB-Co-600 prepared by a large-scale and eco-friendly route can be used as a potential candidate anode for LIBs.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据