Volume 46, Issue 3 pp. 3260-3271
RESEARCH ARTICLE

Simple fabrication of Ni nanodots decorated Ni/Ketjen black composite for sulfur host in lithium-sulfur battery

Bing Wang

Bing Wang

Institute for Advanced Materials, College of Materials Science and Engineering, Jiangsu University, Zhenjiang, China

Search for more papers by this author
Xinye Qian

Corresponding Author

Xinye Qian

Institute for Advanced Materials, College of Materials Science and Engineering, Jiangsu University, Zhenjiang, China

Correspondence

Xinye Qian, Institute for Advanced Materials, College of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China.

Email: [email protected]

Search for more papers by this author
Lina Jin

Lina Jin

Institute for Advanced Materials, College of Materials Science and Engineering, Jiangsu University, Zhenjiang, China

Search for more papers by this author
Shanshan Yao

Shanshan Yao

Institute for Advanced Materials, College of Materials Science and Engineering, Jiangsu University, Zhenjiang, China

Search for more papers by this author
Xiangqian Shen

Xiangqian Shen

Institute for Advanced Materials, College of Materials Science and Engineering, Jiangsu University, Zhenjiang, China

Search for more papers by this author
First published: 14 October 2021
Citations: 3

Funding information: Jiangsu Province, Grant/Award Number: BK20190857

Summary

Ni nanomaterials exhibit excellent adsorption and catalytic ability in the redox reaction of Li-S batteries. Hence, Ni nanodots are embedded in the micropores and mesopores of commercial Ketjen black (KB) to obtain Ni/KB composite nanomaterials by an in situ preparation method with low cost and high yield. The prepared Ni nanodots with 5 to 30 nm diameter act as the active sites in KB matrix and enhance the intrinsic activity; they can not only adsorb lithium polysulfides (LiPSs) by the Ni-S bond but also promote the conversion rate of LiPSs. Consequently, with 3.1 mg cm−2 S loading on positive electrode, the initial discharge capacity of Ni/KB/S electrode at 0.05 C reaches 1253 mAh g−1 and the initial discharge capacity at 0.5 C reaches 818.4 mAh g−1, with the stable cycle exceeding over 500 cycles.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.