Next Article in Journal
New Biomarkers in Acute Tubulointerstitial Nephritis: A Novel Approach to a Classic Condition
Next Article in Special Issue
Electrical and Magnetodielectric Properties of Magneto-Active Fabrics for Electromagnetic Shielding and Health Monitoring
Previous Article in Journal
Vascular Homeostasis and Inflammation in Health and Disease—Lessons from Single Cell Technologies
Previous Article in Special Issue
Employing Nanostructured Scaffolds to Investigate the Mechanical Properties of Adult Mammalian Retinae Under Tension
Open AccessArticle

MnO2 Heterostructure on Carbon Nanotubes as Cathode Material for Aqueous Zinc-Ion Batteries

1
Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
2
Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Hokkaido 060-8628, Japan
3
Institute of Business-Regional Collaborations, Hokkaido University, Hokkaido 001-0021, Japan
4
Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
5
Department of Materials Science, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
6
Center of Excellence in Petrochemical and Materials Technology, Chulalongkorn University, Bangkok 10330, Thailand
7
Research Unit of Advanced Materials for Energy Storage, Chulalongkorn University, Bangkok 10330, Thailand
8
National Science and Technology Development Agency, Pathumthani 12120, Thailand
*
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2020, 21(13), 4689; https://doi.org/10.3390/ijms21134689
Received: 5 June 2020 / Revised: 27 June 2020 / Accepted: 29 June 2020 / Published: 30 June 2020
(This article belongs to the Special Issue Nano-Materials and Methods 2.0)
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, MnO2 cathodes are subjected to challenging issues viz. limited capacity, low rate capability and poor cycling stability. It is seen that the MnO2 heterostructure can enable long-term cycling stability in different types of energy devices. Herein, a versatile chemical method for the preparation of MnO2 heterostructure on multi-walled carbon nanotubes (MNH-CNT) is reported. Besides, the synthesized MNH-CNT is composed of δ-MnO2 and γ-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. View Full-Text
Keywords: zinc-ion battery; cathode; manganese oxide; carbon nanotubes; heterostructure zinc-ion battery; cathode; manganese oxide; carbon nanotubes; heterostructure
Show Figures

Graphical abstract

MDPI and ACS Style

Khamsanga, S.; Nguyen, M.T.; Yonezawa, T.; Thamyongkit, P.; Pornprasertsuk, R.; Pattananuwat, P.; Tuantranont, A.; Siwamogsatham, S.; Kheawhom, S. MnO2 Heterostructure on Carbon Nanotubes as Cathode Material for Aqueous Zinc-Ion Batteries. Int. J. Mol. Sci. 2020, 21, 4689.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop