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Guo YF, Qu JP, Liu XY, Wang PF, Liu ZL, Zhang JH, Yi TF. Berlin Green with tunable iron content as ultra-high rate host for efficient aqueous ammonium ion storage. J Colloid Interface Sci 2024; 667:607-616. [PMID: 38657544 DOI: 10.1016/j.jcis.2024.04.131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 04/06/2024] [Accepted: 04/18/2024] [Indexed: 04/26/2024]
Abstract
Prussian blue analogues (PBAs) are regarded as promising cathode materials for ammonium-ion batteries (AIBs) because of their low cost and superb theoretical capacity. However, its inherently poor conductivity and structural collapse can significantly limit the enhancement of rate property and cycling stability. In this work, Berlin Green (BG) electrode materials with similar wool-like clusters were constructed by direct precipitation method to accelerate the kinetic, which realizes outstanding cycling stability. Berlin Green with the appropriate amount of iron (BG-2) has a fast ion transport channel, enhanced structure stability, highly reversible insertion/extraction of NH4+, and fine electrochemical reaction activity. Benefiting from the unique architecture and component, the BG-2 electrode shows an excellent rate performance with a discharge/charge specific capacity of 60.1/59.3 mAh g-1 at 5 A g-1. Even at 5 A g-1, BG-2 exhibits remarkable cycling stability with an initial discharge capacity of 59.5 mAh g-1 and a capacity retention rate of approximately 76% after 30,000 cycles. The BG-2 reveals exceedingly good electrochemical reversibility during the process of NH4+ (de)insertion. BG materials indicate huge potential as a cathode material for the next generation of high-performance aqueous batteries.
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Affiliation(s)
- Ya-Fei Guo
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, PR China; Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province, School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, PR China
| | - Jin-Peng Qu
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, PR China; Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province, School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, PR China
| | - Xin-Yu Liu
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, PR China; Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province, School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, PR China
| | - Peng-Fei Wang
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, PR China; Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province, School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, PR China
| | - Zong-Lin Liu
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, PR China; Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province, School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, PR China
| | - Jun-Hong Zhang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, PR China
| | - Ting-Feng Yi
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, PR China; Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province, School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, PR China.
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Yi TF, Qiu L, Qu JP, Liu H, Zhang JH, Zhu YR. Towards high-performance cathodes: Design and energy storage mechanism of vanadium oxides-based materials for aqueous Zn-ion batteries. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214124] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Chang H, Li Y, Fang ZK, Qu JP, Zhu YR, Yi TF. Construction of Carbon-Coated LiMn 0.5Fe 0.5PO 4@Li 0.33La 0.56TiO 3 Nanorod Composites for High-Performance Li-Ion Batteries. ACS Appl Mater Interfaces 2021; 13:33102-33111. [PMID: 34235920 DOI: 10.1021/acsami.1c08373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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
The carbon-coated LiMn0.5Fe0.5PO4@Li0.33La0.56TiO3 nanorod composites (denoted as C/LMFP@LLTO) have been successfully obtained according to a common hydrothermal synthesis following a post-calcination treatment. The morphology and particle size of LiMn0.5Fe0.5PO4 (denoted as LMFP) are not changed by the coating. All electrode materials exhibit nanorod morphology; they are 100-200 nm in length and 50-100 nm in width. The Li0.33La0.56TiO3 (denoted as LLTO) coating can facilitate the charge transfer to enhance lithiation/delithiation kinetics, leading to an excellent rate performance and cycle stability of an as-obtained C/LMFP@LLTO electrode material. The reversible discharge capacities of C/LMFP@LLTO (3 wt %) at 0.05 and 5 C are 146 and 131.3 mA h g-1, respectively. After 100 cycles, C/LMFP@LLTO (3 wt %) exhibits an outstanding capacity of 106.4 mA h g-1 with an 81% capacity retention rate at 5 C, indicating an excellent reversible capacity and good cycle capacity. Therefore, it can be considered that LLTO coating is a prospective pathway to exploit the electrochemical performances of C/LMFP.
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Affiliation(s)
- Hui Chang
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, PR China
| | - Ying Li
- School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, PR China
| | - Zi-Kui Fang
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243002, PR China
| | - Jin-Peng Qu
- School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, PR China
| | - Yan-Rong Zhu
- Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province, Northeastern University at Qinhuangdao, Qinhuangdao 066004, PR China
| | - Ting-Feng Yi
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, PR China
- Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province, Northeastern University at Qinhuangdao, Qinhuangdao 066004, PR China
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Abstract
Comparative study on the diameter distribution of MgO nanowires has been carried out. MgO nanowires could be synthesized by the direct reaction between metallic magnesium and silica, and the obtained nanowires have diameters ranging from 50 to 200 nm and lengths of several hundreds nanometers, exhibiting a straight wire. The diameter can be downscaled to smaller than 50 nm, and the nanowire exhibits a curved and twisted one-dimensional structure with lengths up to several micrometers, when a fine support catalyst was used as the reactant. The diameter-controlled growth mechanism was also explained in this work.
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Affiliation(s)
- Long Hu
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, People's Republic of China
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Abstract
In this study bioactive inhibin was measured in 112 serum samples from 103 pregnant women by a sensitive ovine pituitary cell culture system. Human inhibin activities were detected in a range between 0.02-5.28 U/mL at six dilutions by using serum from the 38-week pregnant women as a quality control. A remarkable increase in serum inhibin was observed from 4 to 38 weeks of pregnancy. The mean serum inhibin level was 1.58 U/mL at 4 weeks. Thereafter, inhibin levels increased progressively with the weeks of pregnancy (r = 0.988; P less than 0.001). In the midterm of pregnancy, serum inhibin was elevated at average levels of 2.84 and 3.84 U/mL at 20 and 28 weeks, respectively. The peak level of inhibin (5.33 U/mL) was obtained at 38 weeks, which was an increase of 237% compared to that at 4 weeks. The average rate of increase in serum inhibin levels was 14.51% every 2-4 weeks (ranging from 8.1-20%). These findings suggest that circulating inhibin is useful marker during human pregnancy.
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Affiliation(s)
- J P Qu
- Department of Obstetrics and Gynecology, University of Louvain, Brussels, Belgium
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