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Sun W, Li Z, Li D, Gao K, Miao Z, Han Y, Guan S, Li Z, Sun C. Pre-lithiation strategy to design a high-performance zinc oxide anode for lithium-ion batteries. NANOSCALE 2024; 16:4880-4889. [PMID: 38319407 DOI: 10.1039/d3nr06263e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
Zinc oxide (ZnO) shows great potential as an anode material for advanced energy storage devices owing to its good structural stability and low cost. However, its inferior cycling capacity seriously restricts its practical application. In this work, a pre-lithiation strategy is adopted to construct pre-lithiated ZnO (Li-ZnO) via the facile solid-state reaction method. This well-designed Li-ZnO is polycrystalline, consisting of fine particles. XPS analysis and Raman results confirm the successful pre-lithiation strategy. The pre-lithiation strategy increases the electronic conductivity of Li-ZnO without further carbon coating and suppresses the volume expansion during the electrochemical reaction. As a result, 5 mol% Li-ZnO displays good reversible capacity with a specific capacity of 639 mA h g-1 after 200 cycles at 0.1 A g-1. After 1440 cycles at 1.0 A g-1, the capacity retention is 380 mA h g-1. The pseudocapacitance contribution can reach up to 72.5% at 1.0 mV s-1. Electrochemical kinetic analysis shows that this pre-lithiation strategy can accelerate the lithium-ion diffusion and charge transfer kinetics of the Li-ZnO anode and suppress the pulverization of the electrochemical reaction. This study demonstrates the necessity of developing new anode materials with good cycling stability via this pre-lithiation strategy.
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Affiliation(s)
- Wei Sun
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, P. R. China.
| | - Zeyang Li
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, P. R. China.
| | - Dazhi Li
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, P. R. China.
| | - Kesheng Gao
- College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, Shandong, P. R. China
| | - Zeqing Miao
- College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, Shandong, P. R. China
| | - Ying Han
- Yantai Guobang Chemical Machine Technology Co, Ltd, Yantai 264004, Shandong, P. R. China
| | - Shengjing Guan
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Zhenjiang Li
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, P. R. China.
| | - Changlong Sun
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, P. R. China.
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Duan H, Zhou Z, Zhao Y, Dong Y. MgMoO4 as an anode material for lithium ion batteries and its multi-electron reaction mechanism. Dalton Trans 2022; 51:2493-2505. [DOI: 10.1039/d1dt03971g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Single-phase magnesium molybdate, MgMoO4, is successfully synthesized by a facile sol-gel method. Attributed to the multielectron reaction and the synergistic effect of the elements molybdenum (Mo) and magnesium (Mg), the...
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Wu Y, Zhang J, Duan H, Zhao Y, Dong Y. Synthesis of a full range Fe-doped ZnFe xCo 2-xO 4 and its application as anode material for lithium-ion battery. Dalton Trans 2021; 50:15036-15046. [PMID: 34610075 DOI: 10.1039/d1dt02865k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fe-Doped ZnFexCo2-xO4 (x = 0.00, 0.17, 0.33, 0.47, 0.67, 0.87, 1.17, 1.37, 1.67, 1.87, 2.00) compounds were prepared by a sol-gel method. X-ray diffraction measurements show that Fe-doping does not change the crystal structure of ZnCo2O4 and dopant Fe successfully occupies the 16c Co site. Because of the bigger radius of the doping ion, the cell parameters and cell volumes of ZnFexCo2-xO4 compounds present an obvious linear increase with increasing Fe content. In addition, attributed to the similar crystal structures for ZnFe2O4 and ZnCo2O4, a full range (0 ≤ x ≤ 2) of ZnFexCo2-xO4 solid solution phases was obtained. V/I measurement results show that a small Fe doping content obviously improved the electronic conductivity of the sample. In addition, due to the smaller particles size and uniform particle distribution caused by Fe doping, the lithium ion diffusion coefficient of the sample was increased by 2 orders of magnitude. Based on the improved electronic conductivity combined with the significantly increased lithium-ion diffusion coefficient, a sample with Fe doping content of x = 0.33, ZnFe0.33Co1.67O4, presents a high reversible specific capacity and excellent rate cycle stability. At a rate of 100 mA g-1, a relatively high discharge capacity of 850 mA h g-1 can still be obtained after 100 cycles, which is obviously higher than that of pure ZnCo2O4 (only 295 mA h g-1). Even at a higher discharge rate of 500 mA g-1, a discharge capacity of 450 mA h g-1 with a capacity retention of nearly 100% was obtained. Based on its excellent electrochemical properties, ZnFe0.33Co1.67O4 will be a promising anode material for rechargeable lithium-ion batteries.
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Affiliation(s)
- You Wu
- School of Physics and Optoelectronics, South China University of Technology, Guangzhou, 510640, P. R. China.
| | - Jun Zhang
- Ruyuan Dongyangguang Magnetic Materials Co., Ltd., Shaoguan, 512700, P. R. China
| | - He Duan
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou, 510006, P. R. China
| | - Yanming Zhao
- School of Physics and Optoelectronics, South China University of Technology, Guangzhou, 510640, P. R. China.
| | - Youzhong Dong
- School of Physics and Optoelectronics, South China University of Technology, Guangzhou, 510640, P. R. China.
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Wen N, Chen S, Li X, Zhang K, Feng J, Zhou Z, Fan Q, Kuang Q, Dong Y, Zhao Y. Facile synthesis of one-dimensional vanadyl acetate nanobelts toward a novel anode for lithium storage. Dalton Trans 2021; 50:11568-11578. [PMID: 34351346 DOI: 10.1039/d1dt01930a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transition metal oxides (TMOs) are prospective anode materials for lithium-ion batteries (LIBs), owing to their high theoretical specific capacity. However, the inherently low conductivity of TMOs restricts their application. The coupling of lithium-ion conducting polymer ligands with TMO structures is favorable for the dynamics of electrochemical processes. Herein, vanadyl acetate (VA) nanobelts, an organic-inorganic hybrid material, are synthesized for the first time as an anode material for LIBs. As a result, the VA nanobelt electrode displays an outstanding electrochemical performance, including a highly stable reversible specific capacity (around 1065 mA h g-1 at 200 mA g-1), superior long-term cyclability (with a capacity of approximately 477 mA h g-1 at 2 A g-1 over 500 cycles) and attractive rate capability (1012 mA h g-1 when the current density recovers to 200 mA g-1). In addition, scanning electron microscopy (SEM), cyclic voltammetry (CV) curves at different scanning rates and electrochemical impedance spectroscopy (EIS) are used to investigate the variation of the specific capacity and the electrochemical kinetic characteristics of the VA electrode during cycling in detail, respectively. Also, the structural variations of the VA electrode in the initial two cycles are also investigated by in situ XRD testing. The periodic evolution of the in situ XRD patterns demonstrates that the VA nanobelt electrode shows excellent reversibility for Li+ ion insertion/extraction. This work offers an enlightening insight into the future research into organo-vanadyl hybrids as advanced anode materials.
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Affiliation(s)
- Ni Wen
- School of Physics, South China University of Technology, Guangzhou, 510640, P. R. China.
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Zhu Q, Yang J, Peng Z, He Z, Chen W, Tang H, Li Y. Selective detection of glutathione by flower-like NiV 2O 6 with only peroxidase-like activity at neutral pH. Talanta 2021; 234:122645. [PMID: 34364454 DOI: 10.1016/j.talanta.2021.122645] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/17/2021] [Accepted: 06/18/2021] [Indexed: 12/21/2022]
Abstract
In view of the broad application prospect of peroxidase-like nanozymes in biomedical analysis, it is of great significance to eliminate the interference of their oxidase-like activity and enable them to work under neutral conditions. Herein, flower-like NiV2O6 was synthesized and their enzyme-mimicking activity was investigated. Through the regulation of pH, NiV2O6 nanozyme showed only peroxidase-like activity but not oxidase-like activity under neutral conditions, which could catalyze the oxidation of colorless 3,3',5,5'-tetramethylbenzidine into its blue product in the presence of H2O2. Furthermore, based on the competitive effect of glutathione (GSH) on the catalytic activity of nanozymes, a semi-quantitative/quantitative colorimetric assay was established for GSH detection by using peroxidase-like NiV2O6. The assay exhibited a good linear relationship in GSH concentration ranging from 3-100 μmol L-1, with a detection limit of 0.89 μmol L-1. Moreover, in the presence of formaldehyde as masking agent, this method showed satisfactory specificity for GSH under the interference of a variety of interfering substances and even biothiols. Concerning the practical application, the system was applied to monitor GSH level in fetal bovine serum, human serum and SiHa cells. Satisfyingly, the obtained results were consistent well with those of Ultra performance liquid chromatography (UPLC) and assay kit, indicating the constructed assay has great potential in clinical application.
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Affiliation(s)
- Qiqi Zhu
- Key Laboratory of Xinjiang Phytomedicine Resources for Ministry of Education, School of Pharmacy, Shihezi University, Shihezi, 832000, China
| | - Jiao Yang
- College of Science, Harbin Institute of Technology, Shenzhen, 518055, China
| | - Zhengchun Peng
- College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Zhirong He
- Key Laboratory of Xinjiang Phytomedicine Resources for Ministry of Education, School of Pharmacy, Shihezi University, Shihezi, 832000, China
| | - Wen Chen
- Key Laboratory of Xinjiang Phytomedicine Resources for Ministry of Education, School of Pharmacy, Shihezi University, Shihezi, 832000, China.
| | - Hui Tang
- Key Laboratory of Xinjiang Phytomedicine Resources for Ministry of Education, School of Pharmacy, Shihezi University, Shihezi, 832000, China.
| | - Yingchun Li
- College of Science, Harbin Institute of Technology, Shenzhen, 518055, China; College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China.
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