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Lu X, Pan X, Fang Z, Zhang D, Xu S, Wang L, Liu Q, Shao G, Fu D, Teng J, Yang W. High-Performance Potassium-Ion Batteries with Robust Stability Based on N/S-Codoped Hollow Carbon Nanocubes. ACS Appl Mater Interfaces 2021; 13:41619-41627. [PMID: 34431652 DOI: 10.1021/acsami.1c10655] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Currently, a big challenge for the practical use of potassium-ion batteries (PIBs) is their intrinsically poor cycling stability, due to the relatively large radius of K+ and sluggish kinetics for intercalation/deintercalation. Here we report the scalable fabrication of N/S-codoped hollow carbon nanocubes (NSHCCs), which have the potential as an electrode for advanced PIBs with robust stability. Their discharge and charge specific capacities are ∼560 mA h g-1 and 310 mA h g-1 at a current density of 50 mA g-1, respectively. Meanwhile, they exhibit 100% specific capacity retention after 620 cycles over 9 months at a low current density of 50 mA g-1, which is state-of-the-art among carbon materials. Moreover, they demonstrate nearly no sacrifice in specific capacities with 99.9% retention after 3000 cycles over 4 months under a high current density of 1000 mA g-1, superior to most carbon analogues for potassium storage previously reported. The improved electrochemical performance of NSHCC can be mainly attributed to the unique hollow carbon nanocubes with incorporated N and S dopants, which can expand the carbon layer spacing, facilitate K+ adsorption, and relieve the volume change during the intercalation/deintercalation of K+ ions.
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Affiliation(s)
- Xianlu Lu
- College of Materials Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Institute of Materials, Ningbo University of Technology, Ningbo City, 315211, P. R. China
| | - Xuenan Pan
- Institute of Materials, Ningbo University of Technology, Ningbo City, 315211, P. R. China
| | - Zhi Fang
- Institute of Materials, Ningbo University of Technology, Ningbo City, 315211, P. R. China
| | - Dongdong Zhang
- College of Materials Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Institute of Materials, Ningbo University of Technology, Ningbo City, 315211, P. R. China
| | - Shang Xu
- College of Materials Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Institute of Materials, Ningbo University of Technology, Ningbo City, 315211, P. R. China
| | - Lin Wang
- Institute of Materials, Ningbo University of Technology, Ningbo City, 315211, P. R. China
| | - Qiao Liu
- Institute of Materials, Ningbo University of Technology, Ningbo City, 315211, P. R. China
| | - Gang Shao
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Dingfa Fu
- College of Materials Science and Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Jie Teng
- College of Materials Science and Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Weiyou Yang
- Institute of Materials, Ningbo University of Technology, Ningbo City, 315211, P. R. China
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Zhu J, Li W, Li S, Zhang J, Zhou H, Zhang C, Zhang J, Mu S. Defective N/S-Codoped 3D Cheese-Like Porous Carbon Nanomaterial toward Efficient Oxygen Reduction and Zn-Air Batteries. Small 2018; 14:e1800563. [PMID: 29667348 DOI: 10.1002/smll.201800563] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 03/08/2018] [Indexed: 06/08/2023]
Abstract
Developing a facile and cost-efficient method to synthesize carbon-based nanomaterials possessing excellent structural and functional properties has become one of the most attractive topics in energy conversion and storage fields. In this study, density functional theory calculation results reveal the origin of high oxygen reduction reaction (ORR) activity predominantly derived from the synergistic effect of intrinsic defects and heteroatom dopants (e.g., N, S) that modulate the bandgap and charge density distribution of carbon matrix. Under the guidance of the first-principle prediction, by using ultralight biomass waste as precursor of C, N, and S elements, a defect-rich and N/S dual-doped cheese-like porous carbon nanomaterial is successfully designed and constructed. Herein, the intrinsic defects are artfully generated in terms of alkaline and ammonia activation. The electrochemical measurements display that such a material owns a comparable ORR activity (E1/2 = 0.835 V) to the commercial Pt/C catalyst, along with splendid durability and methanol tolerance in alkali media. Furthermore, as cathode catalyst, it displays a high Zn-air battery performance. The excellent ORR activity of the catalyst can be attributed to its unique 3D porous architecture, abundant intrinsic defects, and high-content active heteroatom dopants in the carbon matrix.
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Affiliation(s)
- Jiawei Zhu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Wenqiang Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Shuaihu Li
- School of Science, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Jian Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
- State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Huang Zhou
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Chengtian Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Jianan Zhang
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Shichun Mu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
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