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Ma Y, Li L, Zhu Y, Zhu Y, Lian R, Zhang W. Construction of N-doped carbon encapsulated CoP hollow nanofibers as multifunctional electrode materials for potassium-ion and lithium-sulfur batteries. J Colloid Interface Sci 2024; 673:504-516. [PMID: 38879992 DOI: 10.1016/j.jcis.2024.06.097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 06/06/2024] [Accepted: 06/11/2024] [Indexed: 06/18/2024]
Abstract
Herein, a composite of N-doped carbon coated phosphating cobalt hollow nanofibers (N/C@CoP-HNFs) was synthesized by electrospinning, phosphating, and carbon coating processes. When employed as multifunctional electrode materials for potassium-ion batteries (PIBs) and lithium-sulfur (Li-S) batteries, the N/C@CoP-HNFs demonstrated notable electrochemical properties. Specifically, it delivered an initial specific capacity of 420.4 mA h g-1 at a current density of 100 mA g-1, with a sustained capacity of 190.8 mA h g-1 after 200 cycles in PIBs, and a specific capacity of 1448 mA h g-1 at a current density of 0.5C in Li-S batteries, which is considered relatively high for these types of battery technology. This good performance may due to the combination of the carbon nitrogen layer and cobalt phosphide bilayer hollow tube structure, which is conducive to telescoping the diffusion length of ions and electrons and buffer volume variation, and effectively inhibits the shuttle effect. Density functional theory (DFT) calculations were also used to explore the energy storage mechanism of the material. The possible adsorption sites and corresponding adsorption energy of K+ were analyzed, and the advantages of the material were explored by calculating the diffusion barrier and state density. The theoretical simulations further validated the strong adsorption capability of CoP for polysulfides. This work is expected to provide new ideas for new energy storage materials.
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Affiliation(s)
- Yueyue Ma
- Province-Ministry Co-construction Collaborative Innovation Center of Hebei Photovoltaic Technology, College of Physics Science and Technology, Hebei University, Baoding, Hebei 071002, China
| | - Ling Li
- Province-Ministry Co-construction Collaborative Innovation Center of Hebei Photovoltaic Technology, College of Physics Science and Technology, Hebei University, Baoding, Hebei 071002, China.
| | - Yiman Zhu
- Province-Ministry Co-construction Collaborative Innovation Center of Hebei Photovoltaic Technology, College of Physics Science and Technology, Hebei University, Baoding, Hebei 071002, China
| | - Yajing Zhu
- Province-Ministry Co-construction Collaborative Innovation Center of Hebei Photovoltaic Technology, College of Physics Science and Technology, Hebei University, Baoding, Hebei 071002, China
| | - Ruqian Lian
- Province-Ministry Co-construction Collaborative Innovation Center of Hebei Photovoltaic Technology, College of Physics Science and Technology, Hebei University, Baoding, Hebei 071002, China.
| | - Wenming Zhang
- Province-Ministry Co-construction Collaborative Innovation Center of Hebei Photovoltaic Technology, College of Physics Science and Technology, Hebei University, Baoding, Hebei 071002, China.
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Tao X, Zhang Z, Li Z, Xiong S, Wang S, Gao F, Wang C, Hou L. Peapod-Like Structured B/N Co-Doped Carbon Nanotube Array Encapsulating M xP y (M = Fe, Co, and Ni) Nanoparticles for High-Rate Potassium Storage. ACS APPLIED MATERIALS & INTERFACES 2024; 16:772-783. [PMID: 38153090 DOI: 10.1021/acsami.3c15188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
Potassium-ion batteries (PIBs) have become the desirable alternatives for lithium-ion batteries (LIBs) originating from abundant reserves and appropriate redox potential, while the considerable radius size of K+ leading to poor reaction kinetics and huge volume expansion limits the practical application of PIBs. Hybridization of transition-metal phosphides and carbon substrates can effectively optimize the obstacles of poor conductivity, sluggish kinetics, and huge volume variation. Thus, the peapod-like structural MxPy@BNCNTs (M = Fe, Co, and Ni) composites as anode materials for PIBs were synthesized through a facile strategy. Notably, the unique architecture of B/N codoped carbon nanotube array as fast ion/electron transfer pathways effectively improves the electronic conductivity of composites. The MxPy nanoparticles (NPs) are encapsulated in BNCNTs with an amorphous carbon layer (5-10 nm), which discernibly alleviate the volume changes during potassiation/depotassiation. In conclusion, the composites show a commendable cycling performance, possessing reversible capacities of 111, 152, and 122 mA h g-1 after 1000 cycles at 1.0 A g-1 with a negligible capacity loss for FeP@BNCNT, CoP/Co2P@BNCNT, and Ni2P@BNCNT electrodes, respectively. Especially, after 1000 cycles at 2.0 A g-1, the CoP/Co2P@BNCNT electrode still possesses a capacity of 87.9 mA h g-1, demonstrating excellent rate performance and long-term life. This work may offer an innovative and viable route to construct a stable architecture for solving the issue of poor stability of TMP-based anodes at a high current density.
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Affiliation(s)
- Xiwen Tao
- Key Laboratory of Applied Chemistry, Yanshan University, Qinhuangdao 066004, China
| | - Zhengguang Zhang
- Key Laboratory of Applied Chemistry, Yanshan University, Qinhuangdao 066004, China
| | - Zheng Li
- Key Laboratory of Applied Chemistry, Yanshan University, Qinhuangdao 066004, China
| | - Shuangsheng Xiong
- Key Laboratory of Applied Chemistry, Yanshan University, Qinhuangdao 066004, China
| | - Shengmei Wang
- Key Laboratory of Applied Chemistry, Yanshan University, Qinhuangdao 066004, China
| | - Faming Gao
- Key Laboratory of Applied Chemistry, Yanshan University, Qinhuangdao 066004, China
- College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Chen Wang
- Key Laboratory of Applied Chemistry, Yanshan University, Qinhuangdao 066004, China
| | - Li Hou
- Key Laboratory of Applied Chemistry, Yanshan University, Qinhuangdao 066004, China
- State key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, PR China
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Chemical-etching strategy tailoring hollow carbon confined highly dispersed CoP nanoparticles for durable potassium storage. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2022.141681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
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