Journal
CHEMICAL ENGINEERING JOURNAL
Volume 426, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2021.130068
Keywords
Electrospinning; Lightweight; NiCo2S4; Cathode; Aqueous batteries
Categories
Funding
- External Cooperative Projects of Fujian Province [2018I0001]
- Central Government Guiding Local Science and Technology Development Project [2018L3001]
- Fujian Provincial University Leadership Funding Plan [2018-12]
- Guiding Project of the Science and Technology Department of Fujian Province [2018H0004]
Ask authors/readers for more resources
The study developed one-dimensional electrospun carbon nanofibers functionalized with ternary NiCo2S4 nanoparticles for aqueous nickel-zinc batteries, showing high capacity, good rate performance, and long-term cycling stability. Additionally, a quasi-solid-state battery was fabricated with impressive energy density, demonstrating potential for practical applications.
Aqueous nickel-zinc (Ni-Zn) batteries hold great promise for large-scale energy storage systems. However, traditional Ni-based cathode electrodes are generally consist of none capacity contribution additives and heavy current collectors, resulting in a low percentage of the active materials. In this regard, developing lightweight, flexible and binder-free cathode electrodes for aqueous Ni-Zn batteries is highly desirable. Herein, for the first time, we develop a simple electrospinning technique to synthesize the one-dimensional (1D) electrospun carbon nanofibers functionalized with ternary NiCo2S4 nanoparticles (denoted as CNF@NiCo2S4) as a lightweight, flexible and binder-free electrode for aqueous Ni-Zn batteries. Based on the self-standing CNF@NiCo2S4 film as cathode, the as-fabricated aqueous CNF@NiCo2S4//Zn battery exhibits a high capacity of 0.32 mAh cm(-2) and 35.9 mAh cm(-3) at a current density of 2 mA cm(-2), and good rate performance (0.21 mAh cm(-2) at 20 mA cm(-2)) and long-term cycling stability (83% capacity retention at 10 mA cm(-2) after 2000 cycles). More importantly, a quasi-solid-state CNF@NiCo2S4//Zn battery is also fabricated, which also displays an impressive energy density of 362.3 Wh kg(-1), indicating the potential towards practical applications. Impressively, the volumetric energy density of CNF@NiCo2S4//Zn battery are 58.2 mWh cm(-3) (liquid) and 45.4 mWh cm(-3) (quasi-solid-state), which are much larger than the values of other reported Ni-Zn batteries. Theses results indicate the self-standing CNF@NiCo2S4 film is promising for for next generation electronic applications.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available