A Dual-Function Na2SO4 Template Directed Formation of Cathode Materials with a High Content of Sulfur Nanodots for Lithium–Sulfur Batteries

Chong Luo, Wei Lv, Yaqian Deng, Guangmin Zhou, Zheng Ze Pan, Shuzhang Niu, Baohua Li, Feiyu Kang, Quan Hong Yang

研究成果: Article査読

19 被引用数 (Scopus)

抄録

The sulfur content in carbon–sulfur hybrid using the melt-diffusion method is normally lower than 70 wt%, which greatly decreases the energy density of the cathode in lithium–sulfur (Li-S) batteries. Here, a scalable method inspired by the commercialized production of Na2S is used to prepare a hierarchical porous carbon–sulfur hybrid (denoted HPC-S) with high sulfur content (≈85 wt%). The HPC-S is characterized by the structure of sulfur nanodots naturally embedded in a 3D carbon network. The strategy uses Na2SO4 as the starting material, which serves not only as the sulfur precursor but also as a salt template for the formation of the 3D carbon network. The HPC-S cathode with such a high sulfur content shows excellent rate performance and cycling stability in Li–S batteries because of the sulfur nanoparticles, the unique carbon framework, and the strong interaction between them. The production method can also be readily scaled up and used in practical Li–S battery applications.

本文言語English
論文番号1700358
ジャーナルSmall
13
27
DOI
出版ステータスPublished - 2017 7 19
外部発表はい

ASJC Scopus subject areas

  • バイオテクノロジー
  • 生体材料
  • 化学 (全般)
  • 材料科学(全般)

フィンガープリント

「A Dual-Function Na<sub>2</sub>SO<sub>4</sub> Template Directed Formation of Cathode Materials with a High Content of Sulfur Nanodots for Lithium–Sulfur Batteries」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル