Nitrogen-Doped Graphene Uniformly Loaded with Large Interlayer Spacing MoS<sub>2</sub> Nanoflowers for Enhanced Lithium–Sulfur Battery Performance
Zhen Wu,
Wenfeng He,
Renjie Xie,
Xuan Xiong,
Zihan Wang,
Lei Zhou,
Fen Qiao,
Junfeng Wang,
Yan Zhou,
Xinlei Wang,
Jiajia Yuan,
Tian Tang,
Chenyao Hu,
Wei Tong,
Lubin Ni,
Xin Wang,
Yongsheng Fu
Affiliations
Zhen Wu
School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
Wenfeng He
Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, China
Renjie Xie
School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
Xuan Xiong
School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
Zihan Wang
School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
Lei Zhou
School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
Fen Qiao
School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
Junfeng Wang
School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
Yan Zhou
School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
Xinlei Wang
School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
Jiajia Yuan
Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, China
Tian Tang
Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, China
Chenyao Hu
College of Science & Institute of Materials Physics and Chemistry, Nanjing Forestry University, Nanjing 210037, China
Wei Tong
School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
Lubin Ni
School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
Xin Wang
Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, China
Yongsheng Fu
Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, China
Lithium–sulfur (Li-S) batteries offer a high theoretical energy density but suffer from poor cycling stability and polysulfide shuttling, which limits their practical application. To address these challenges, we developed a PANI-modified MoS2-NG composite, where MoS2 nanoflowers were uniformly grown on graphene oxide (GO) through PANI modification, resulting in an increased interlayer spacing of MoS2. This expanded spacing exposed more active sites, enhancing polysulfide adsorption and catalytic conversion. The composite was used to prepare MoS2-NG/PP separators for Li-S batteries, which achieved a high specific capacity of 714 mAh g−1 at a 3 C rate and maintained a low capacity decay rate of 0.085% per cycle after 500 cycles at 0.5 C. The larger MoS2 interlayer spacing was key to improving redox reaction kinetics and suppressing the shuttle effect, making the MoS2-NG composite a promising material for enhancing the performance and stability of Li-S batteries.
