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Moscoso R, Abarca S, Yáñez C, Squella J. MWCNT buckypaper disc films as alternative to the drop casting method to modify electrode surfaces. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.141984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Multilayered nickel oxide/carbon nanotube composite paper electrodes for asymmetric supercapacitors. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136744] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Han M, Huang J, Liang S, Shan L, Xie X, Yi Z, Wang Y, Guo S, Zhou J. Oxygen Defects in β-MnO 2 Enabling High-Performance Rechargeable Aqueous Zinc/Manganese Dioxide Battery. iScience 2020; 23:100797. [PMID: 31927485 PMCID: PMC6957857 DOI: 10.1016/j.isci.2019.100797] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 09/29/2019] [Accepted: 12/18/2019] [Indexed: 11/23/2022] Open
Abstract
Rechargeable aqueous Zn/manganese dioxide (Zn/MnO2) batteries are attractive energy storage technology owing to their merits of low cost, high safety, and environmental friendliness. However, the β-MnO2 cathode is still plagued by the sluggish ion insertion kinetics due to the relatively narrow tunneled pathway. Furthermore, the energy storage mechanism is under debate as well. Here, β-MnO2 cathode with enhanced ion insertion kinetics is introduced by the efficient oxygen defect engineering strategy. Density functional theory computations show that the β-MnO2 host structure is more likely for H+ insertion rather than Zn2+, and the introduction of oxygen defects will facilitate the insertion of H+ into β-MnO2. This theoretical conjecture is confirmed by the capacity of 302 mA h g-1 and capacity retention of 94% after 300 cycles in the assembled aqueous Zn/β-MnO2 cell. These results highlight the potentials of defect engineering as a strategy of improving the electrochemical performance of β-MnO2 in aqueous rechargeable batteries.
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Affiliation(s)
- Mingming Han
- School of Materials Science and Engineering, Central South University, Changsha 410083, China
| | - Jiwu Huang
- School of Materials Science and Engineering, Central South University, Changsha 410083, China
| | - Shuquan Liang
- School of Materials Science and Engineering, Central South University, Changsha 410083, China; Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province, Central South University, Changsha 410083, China.
| | - Lutong Shan
- School of Materials Science and Engineering, Central South University, Changsha 410083, China
| | - Xuesong Xie
- School of Materials Science and Engineering, Central South University, Changsha 410083, China
| | - Zhenyu Yi
- School of Materials Science and Engineering, Central South University, Changsha 410083, China
| | - Yiren Wang
- School of Materials Science and Engineering, Central South University, Changsha 410083, China.
| | - Shan Guo
- School of Materials Science and Engineering, Central South University, Changsha 410083, China
| | - Jiang Zhou
- School of Materials Science and Engineering, Central South University, Changsha 410083, China; Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province, Central South University, Changsha 410083, China.
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Electrodeposited cobalt hydroxide in expanded carbon graphite electrode obtained from exhausted batteries applied as energy storage device. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2018.11.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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