MnO 2  Heterostructure on Carbon Nanotubes as Cathode Material for Aqueous Zinc-Ion Batteries

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Abstract

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 (MnO ₂) 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 δ-MnO ₂ and γ-MnO ₂. 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.

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Reversible aqueous zinc/manganese oxide energy storage from conversion reactions

Huilin Pan, Yuyan Shao, Pengfei Yan … (2016)

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Zn/MnO2 Battery Chemistry With H+ and Zn2+ Coinsertion.

Wei Sun, Fei Wang, Singyuk Hou … (2017)

Rechargeable aqueous Zn/MnO2 battery chemistry in a neutral or mildly acidic electrolyte has attracted extensive attention recently because all the components (anode, cathode, and electrolyte) in a Zn/MnO2 battery are safe, abundant, and sustainable. However, the reaction mechanism of the MnO2 cathode remains a topic of discussion. Herein, we design a highly reversible aqueous Zn/MnO2 battery where the binder-free MnO2 cathode was fabricated by in situ electrodeposition of MnO2 on carbon fiber paper in mild acidic ZnSO4+MnSO4 electrolyte. Electrochemical and structural analysis identify that the MnO2 cathode experience a consequent H+ and Zn2+ insertion/extraction process with high reversibility and cycling stability. To our best knowledge, it is the first report on rechargeable aqueous batteries with a consequent ion-insertion reaction mechanism.

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Issues and opportunities facing aqueous zinc-ion batteries

Boya Tang, Lutong Shan, Shuquan Liang … (2019)

We retrospect recent advances in rechargeable aqueous zinc-ion batteries system and the facing challenges of aqueous zinc-ion batteries. Importantly, some concerns and feasible solutions for achieving practical aqueous zinc-ion batteries are discussed in detail. Zinc-ion batteries built on water-based electrolytes featuring compelling price-points, competitive performance, and enhanced safety represent advanced energy storage chemistry as a promising alternative to current lithium-ion battery systems. Attempts to develop rechargeable aqueous zinc-ion batteries (ZIBs) can be traced to as early as the 1980s; however, since 2015, the research activity in this field has surged throughout the world. Despite the achievements made in exploring electrode materials so far, significant challenges remain at the material level and even on the whole aqueous ZIBs system, leading to the failure of ZIBs to meet commercial requirements. This review aims to discuss how to pave the way for developing aqueous ZIBs. The current research efforts related to aqueous ZIBs electrode materials and electrolytes are summarized, including an analysis of the problems encountered in both cathode/anode materials and electrolyte optimization. Some concerns and feasible solutions for achieving practical aqueous ZIBs are discussed in detail. We would like to point out that merely improving the electrode materials is not enough; synergistic optimization strategies toward the whole battery system are also deeply needed. Finally, some perspectives are provided on the subsequent optimization design for further research efforts in the aqueous ZIB field.

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Author and article information

Journal

Journal ID (nlm-ta): Int J Mol Sci

Journal ID (iso-abbrev): Int J Mol Sci

Journal ID (publisher-id): ijms

Title: International Journal of Molecular Sciences

Publisher: MDPI

ISSN (Electronic): 1422-0067

Publication date (Electronic): 30 June 2020

Publication date Collection: July 2020

Volume: 21

Issue: 13

Electronic Location Identifier: 4689

Affiliations

[1 ]Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; 6071443721@ 123456student.chula.ac.th

[2 ]Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Hokkaido 060-8628, Japan; mai_nt@ 123456eng.hokudai.ac.jp (M.T.N.); tetsu@ 123456eng.hokudai.ac.jp (T.Y.)

[3 ]Institute of Business-Regional Collaborations, Hokkaido University, Hokkaido 001-0021, Japan

[4 ]Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand; patchanita.v@ 123456chula.ac.th

[5 ]Department of Materials Science, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand; rojana.p@ 123456chula.ac.th (R.P.); prasit.pat@ 123456chula.ac.th (P.P.)

[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; adisorn.tua@ 123456nstda.or.th (A.T.); siwaruk.siw@ 123456nstda.or.th (S.S.)

Author notes

[* ]Correspondence: soorathep.k@ 123456chula.ac.th ; Tel.: +66-81-490-5280

Author information

Mai Thanh Nguyen https://orcid.org/0000-0001-5436-123X

Tetsu Yonezawa https://orcid.org/0000-0001-7371-204X

Patchanita Thamyongkit https://orcid.org/0000-0003-0261-3014

Soorathep Kheawhom https://orcid.org/0000-0002-3129-2750

Article

Publisher ID: ijms-21-04689

DOI: 10.3390/ijms21134689

PMC ID: 7369720

PubMed ID: 32630149

SO-VID: 54e8b893-b8e4-4d2b-9869-45422187ab3c

License:

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).

MnO ₂ Heterostructure on Carbon Nanotubes as Cathode Material for Aqueous Zinc-Ion Batteries

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Most cited references 58

Reversible aqueous zinc/manganese oxide energy storage from conversion reactions

Zn/MnO2 Battery Chemistry With H+ and Zn2+ Coinsertion.

Issues and opportunities facing aqueous zinc-ion batteries

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