Abstract
In recent years, the development of lithium-ion batteries (LIBs) with high energy density has become one of the important research directions to fulfill the needs of electric vehicles and smart grid technologies. Nowadays, traditional LIBs have reached their limits in terms of capacity, cycle life, and stability, necessitating their further improvement and development of alternative materials with remarkably enhanced properties. A nitrogen-containing carbon nanotube (N-CNT) host for bimetallic sulfide (NiCo2S4) is proposed in this study as an anode with attractive electrochemical performance for LIBs. The prepared NiCo2S4/N-CNT nanocomposite exhibited improved cycling stability, rate performance, and an excellent reversible capacity of 623.0 mAh g-1 after 100 cycles at 0.1 A g-1 and maintained a high capacity and cycling stability at 0.5 A g-1. The excellent electrochemical performance of the composite can be attributed to the unique porous structure, which can effectively enhance the diffusivity of Li ions while mitigating the volume expansion during the charge-discharge processes.
| Original language | English |
|---|---|
| Article number | 105 |
| Pages (from-to) | 105 |
| Journal | Nanoscale Research Letters |
| Volume | 16 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jun 12 2021 |
Funding
This research was funded by Natural Science Foundation of Hebei Province of China (B2020202052); the Program for the Outstanding Young Talents of Hebei Province, China; Chunhui Project of Ministry of Education of the People’s Republic of China (Grant No. Z2017010); the Faculty Development Competitive Research Grant Program Grant 110119FD4504 and Collaborative Research Program Grant 091019CRP2114 from Nazarbayev University.
Keywords
- Anode
- Binary metal sulfides
- Lithium-ion batteries
- NiCoS
- Nitrogen-doped carbon nanotube
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
