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Shao C, Luo Y, Fan H, Wang Y, Li T, Li Q, Liu W. An oriented tube array porous carbon anode prepared using a self-blowing mold of salt templates for high-rate potassium storage. NANOSCALE 2024; 16:4768-4777. [PMID: 38303672 DOI: 10.1039/d3nr06081k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Porous carbon materials with oriented porosity are very useful in ion batteries, but their high cost and complex fabrication hinder their wide application. In this paper, we used cheap and water-soluble NaHCO3 grains to prepare unique porous carbon with an orderly arranged tube array via one-step carbonization. During the preparation process, a novel self-blowing mold of salt templates was discovered for the first time, and the resulting numerous high-speed gas jets can act as gas state templates to induce the formation of the oriented porous carbon into a mesoscale tube array with rich micropores. Besides, the amount of CO functional groups has been enhanced greatly by the chemical activation of H2O and CO2 derived from the decomposition of NaHCO3, which can improve the reversible specific capacity of the electrode by forming a C-O-K compound with potassium. Thanks to the coupling effect of the hierarchical porous structure with an orderly tube array and rich CO functional groups, the obtained porous carbon materials exhibited excellent kinetics and impressive rate capability as the anode of potassium-ion batteries (PIBs) with high capacities of 209 mA h g-1 at 10 A g-1 and 156 mA h g-1 at 30 A g-1. This work not only provides a facile, green, sustainable approach to fabricating novel carbon materials, but also demonstrates the promising prospect of oriented porous carbon in exploring advanced electrode materials for PIBs.
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Affiliation(s)
- Chenchen Shao
- School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, People's Republic of China.
| | - Yusheng Luo
- School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, People's Republic of China.
| | - Hongguang Fan
- School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, People's Republic of China.
| | - Yanpeng Wang
- School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, People's Republic of China.
| | - Tao Li
- School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, People's Republic of China.
| | - Qingping Li
- School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, People's Republic of China.
| | - Wei Liu
- School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, People's Republic of China.
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Jiang Q, Zhao W, Xu X, Ke D, Ren R, Zhao F, Zhang S, Zhou T, Hu J. Architecting carbon-coated Mo 2CT x/MoSe 2 heterostructures enables robust potassium storage. Chem Commun (Camb) 2023; 59:13329-13332. [PMID: 37867331 DOI: 10.1039/d3cc03479h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2023]
Abstract
Herein, carbon-coated MoSe2 decorated Mo2CTx MXene heterostructures (MoSe2/Mo2CTx@C) have been fabricated. Mo2CTx works as a dual-function electron/ion conductor, which not only provides high conductivity and mechanical strength, but also prevents the severe self-aggregation of few layered MoSe2 nanosheets. The high reversible capacities of 405 mA h g-1 at 100 mA g-1 after 150 cycles and 258 mA h g-1 at 2000 mA g-1 after 400 cycles could be achieved for a potassium-ion battery.
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Affiliation(s)
- Qingqing Jiang
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education, Hubei Engineering Technology Research Centre of Energy Polymer Materials, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Weifang Zhao
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education, Hubei Engineering Technology Research Centre of Energy Polymer Materials, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Xinyue Xu
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education, Hubei Engineering Technology Research Centre of Energy Polymer Materials, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Da Ke
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
| | - Ran Ren
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education, Hubei Engineering Technology Research Centre of Energy Polymer Materials, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Fuzhen Zhao
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education, Hubei Engineering Technology Research Centre of Energy Polymer Materials, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Shilin Zhang
- School of Chemical Engineering & Advanced Materials, University of Adelaide, Adelaide, SA 5005, Australia
| | - Tengfei Zhou
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
| | - Juncheng Hu
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education, Hubei Engineering Technology Research Centre of Energy Polymer Materials, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, China
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