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Wang S, Kuang Y, Wang H, Guo X, Cao B, Li L. A ternary oxygen-vacancy abundant ZnMn 2O 4/MnCO 3/nitrogen-doped reduced graphene oxide hybrid towards superior-performance lithium storage. Dalton Trans 2023; 52:14371-14379. [PMID: 37772626 DOI: 10.1039/d3dt02335d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/30/2023]
Abstract
Transition metal oxides (TMOs) and metal carbonates exhibit high specific capacity, abundant reserves on Earth, and environmental friendliness as anode materials for lithium-ion batteries (LIBs). However, their poor electrical conductivity and serious volume expansion lead to rapid capacity decay. Herein, a stable and highly conductive composite of an oxygen-vacancy abundant nitrogen-doped reduced graphene oxide (NG) encapsulated ZnMn2O4/MnCO3 (ZnMn2O4/MnCO3/NG) hybrid is successfully fabricated, which can provide more spaces for rapid ion diffusion and corroborate fast electron transport. The ZnMn2O4/MnCO3/NG hybrid exhibits an incredible reversible capacity (916 mA h g-1 at 0.1 A g-1), preeminent cycling stability (800 mA h g-1 at 1 A g-1 after 300 cycles) and outstanding rate capability (459 mA h g-1 at 2 A g-1). The excellent lithium storage performance of ZnMn2O4/MnCO3/NG is attributed to the synergistic effect between ZnMn2O4 and MnCO3, the addition of nitrogen and oxygen defects, and the stable structures of NG, which relieve the volume expansion of the electrode material, improve the electronic conductivity and enhance structural stability and surface capacitive response. This work provides a new idea for constructing oxygen-vacancy abundant NG encapsulated bimetal oxides for energy storage of LIBs.
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Affiliation(s)
- Shuo Wang
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, Shandong, China.
| | - Yuzhen Kuang
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, Shandong, China.
| | - Hanlu Wang
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, Shandong, China.
| | - Xi Guo
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, Shandong, China.
| | - Bingqiang Cao
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, Shandong, China.
| | - Li Li
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, Shandong, China.
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Li J, Long J, Han T, Lin X, Sun B, Zhu S, Li J, Liu J. A Hierarchical SnO 2@Ni 6MnO 8 Composite for High-Capacity Lithium-Ion Batteries. MATERIALS (BASEL, SWITZERLAND) 2022; 15:8847. [PMID: 36556653 PMCID: PMC9784713 DOI: 10.3390/ma15248847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/17/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
Semiconductor-based composites are potential anodes for Li-ion batteries, owing to their high theoretical capacity and low cost. However, low stability induced by large volumetric change in cycling restricts the applications of such composites. Here, a hierarchical SnO2@Ni6MnO8 composite comprising Ni6MnO8 nanoflakes growing on the surface of a three-dimensional (3D) SnO2 is developed by a hydrothermal synthesis method, achieving good electrochemical performance as a Li-ion battery anode. The composite provides spaces to buffer volume expansion, its hierarchical profile benefits the fast transport of Li+ ions and electrons, and the Ni6MnO8 coating on SnO2 improves conductivity. Compared to SnO2, the Ni6MnO8 coating significantly enhances the discharge capacity and stability. The SnO2@Ni6MnO8 anode displays 1030 mAh g-1 at 0.1 A g-1 and exhibits 800 mAh g-1 under 0.5 A g-1, along with high Coulombic efficiency of 95%. Furthermore, stable rate performance can be achieved, indicating promising applications.
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Affiliation(s)
- Jiying Li
- Key Laboratory of Functional Molecular Solids of the Ministry of Education, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Jiawei Long
- Key Laboratory of Functional Molecular Solids of the Ministry of Education, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Tianli Han
- Key Laboratory of Functional Molecular Solids of the Ministry of Education, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Xirong Lin
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Department of Micro/Nano-Electronics, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Bai Sun
- College of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China
| | - Shuguang Zhu
- College of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China
| | - Jinjin Li
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Department of Micro/Nano-Electronics, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jinyun Liu
- Key Laboratory of Functional Molecular Solids of the Ministry of Education, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
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