Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 21, Issue 13, Pages -Publisher
MDPI
DOI: 10.3390/ijms21134689
Keywords
zinc-ion battery; cathode; manganese oxide; carbon nanotubes; heterostructure
Funding
- 90th Anniversary Chulalongkorn University, Ratchadapisek Sompote Fund
- Energy Storage Cluster of Chulalongkorn University
- National Science and Technology Development
- aXis (Accelerating Social Implementation for SDGs Achievement) of Japan Science and Technology Agency (JST)
- 100th Anniversary Chulalongkorn University Fund for Doctoral Scholarship
- Overseas Research Experience Scholarship for Graduate Students, Chulalongkorn University
- Scholarship for Exchange Students, Hokkaido University
Ask authors/readers for more resources
Due to their cost effectiveness, high safety, and eco-friendliness, zinc-ion batteries (ZIBs) are receiving much attention nowadays. In the production of rechargeable ZIBs, the cathode plays an important role. Manganese oxide (MnO2) is considered the most promising and widely investigated intercalation cathode material. Nonetheless, MnO(2)cathodes are subjected to challenging issues viz. limited capacity, low rate capability and poor cycling stability. It is seen that the MnO(2)heterostructure can enable long-term cycling stability in different types of energy devices. Herein, a versatile chemical method for the preparation of MnO(2)heterostructure on multi-walled carbon nanotubes (MNH-CNT) is reported. Besides, the synthesized MNH-CNT is composed of delta-MnO(2)and gamma-MnO2. A ZIB using the MNH-CNT cathode delivers a high initial discharge capacity of 236 mAh g(-1)at 400 mA g(-1), 108 mAh g(-1)at 1600 mA g(-1)and excellent cycling stability. A pseudocapacitive behavior investigation demonstrates fast zinc ion diffusion via a diffusion-controlled process with low capacitive contribution. Overall, the MNH-CNT cathode is seen to exhibit superior electrochemical performance. This work presents new opportunities for improving the discharge capacity and cycling stability of aqueous ZIBs.
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