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Remarkable-cycle-performance β-bismuthene/graphene heterostructure anode for Li-ion battery. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.11.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Zhu J, Xu P, Zhao E, Zhang X, Li X, Li J. The impacts of net charge on the water dispersity of nanoparticles. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Fang Z, Duan S, Liu H, Hong Z, Wu H, Zhao F, Li Q, Fan S, Duan W, Wang J. Lithium Storage Mechanism and Application of Micron-Sized Lattice-Reversible Binary Intermetallic Compounds as High-Performance Flexible Lithium-Ion Battery Anodes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2105172. [PMID: 34862841 DOI: 10.1002/smll.202105172] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 10/23/2021] [Indexed: 06/13/2023]
Abstract
A strategy of lattice-reversible binary intermetallic compounds of metallic elements is proposed for applications in flexible lithium-ion battery (LIB) anode with high capacity and cycling stability. First, the use of metallic elements can ensure excellent electronic conductivity and high capacity of the active anode substance. Second, binary intermetallic compounds possess a larger initial lattice volume than metallic monomers, so that the problem of volume expansion can be alleviated. Finally, the design of binary intermetallic compounds with lattice reversibility further improves the cycle stability. In this work, the feasibility of this strategy is verified using an indium antimonide (InSb) system. The volumetric expansion and lithium storage mechanism of InSb are investigated by in situ Raman characterization and theoretical calculations. The active material utilization is significantly improved and the growth of In whiskers is inhibited in the micron-sized ball-milled and carbon coated InSb (bInSb@C) anode, which exhibits a reversible capacity of 733.8 mAh g-1 at 0.2 C, and provides a capacity of 411.5 mAh g-1 after 200 cycles at 3 C with an average Coulombic efficiency of 99.95%. This strategy is validated in pouch cells, illustrating the great potential of lattice-reversible binary intermetallic compounds for use as commercial flexible LIB anodes.
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Affiliation(s)
- Zhenhan Fang
- Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing, 100084, China
| | - Shaorong Duan
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing, 100084, China
| | - Haitao Liu
- Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing, 100088, China
| | - Zixin Hong
- Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing, 100084, China
| | - Hengcai Wu
- Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing, 100084, China
| | - Fei Zhao
- Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing, 100084, China
| | - Qunqing Li
- Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing, 100084, China
- Frontier Science Center for Quantum Information, Beijing, 100084, China
| | - Shoushan Fan
- Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing, 100084, China
| | - Wenhui Duan
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing, 100084, China
- Institute for Advanced Study, Tsinghua University, Beijing, 100084, China
- Frontier Science Center for Quantum Information, Beijing, 100084, China
| | - Jiaping Wang
- Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing, 100084, China
- Frontier Science Center for Quantum Information, Beijing, 100084, China
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Zhu J, Ou X, Su J, Li J. The impacts of surface polarity on the solubility of nanoparticle. J Chem Phys 2016; 145:044504. [PMID: 27475378 DOI: 10.1063/1.4959805] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
In order to study the dependence of water solubility and hydration behavior of nanoparticles on their surface polarity, we designed polar nanoparticles with varying surface polarity by assigning atomic partial charge to the surface of C60. The water solubility of the nanoparticle is enhanced by several orders of magnitude after the introduction of surface polarity. Nevertheless, when the atomic partial charge grows beyond a certain value (qM), the solubility continuously decreases to the level of nonpolar nanoparticle. It should be noted that such qM is comparable with atomic partial charge of a variety of functional groups. The hydration behaviors of nanoparticles were then studied to investigate the non-monotonic dependence of solubility on the surface polarity. The interaction between the polar nanoparticle and the hydration water is stronger than the nonpolar counterpart, which should facilitate the dissolution of the nanoparticles. On the other hand, the surface polarity also reduces the interaction of hydration water with the other water molecules and enhances the interaction between the nanoparticles which may hinder their dispersion. Besides, the introduction of surface polarity disturbs and even rearranges the hydration structure of nonpolar nanoparticle. Interestingly, the polar nanoparticle with less ordered hydration structure tends to have higher water solubility.
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Affiliation(s)
- Jianzhuo Zhu
- College of Science, Yanshan University, Qinhuangdao 066004, China
| | - Xinwen Ou
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Yuquan Road 19B, Beijing 100049, China
| | - Jiguo Su
- College of Science, Yanshan University, Qinhuangdao 066004, China
| | - Jingyuan Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Yuquan Road 19B, Beijing 100049, China
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Li W, Yang Y, Zhang G, Zhang YW. Ultrafast and directional diffusion of lithium in phosphorene for high-performance lithium-ion battery. NANO LETTERS 2015; 15:1691-7. [PMID: 25664808 DOI: 10.1021/nl504336h] [Citation(s) in RCA: 274] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Density functional theory calculations have been performed to investigate the binding and diffusion behavior of Li in phosphorene. Our studies reveal the following findings: (1) Li atom forms strong binding with phosphorus atoms and exists in the cationic state; (2) the shallow energy barrier (0.08 eV) of Li diffusion on monolayer phosphorene along zigzag direction leads to an ultrahigh diffusivity, which is estimated to be 10(2) (10(4)) times faster than that on MoS2 (graphene) at room temperature; (3) the large energy barrier (0.68 eV) along armchair direction results in a nearly forbidden diffusion, and such strong diffusion anisotropy is absent in graphene and MoS2; (4) a remarkably large average voltage of 2.9 V is predicted in the phosphorene-based Li-ion battery; and (5) a semiconducting to metallic transition induced by Li intercalation of phosphorene gives rise to a good electrical conductivity, ideal for use as an electrode. Given these advantages, it is expected that phosphorene will present abundant opportunities for applications in novel electronic device and lithium-ion battery with a high rate capability and high charging voltage.
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Affiliation(s)
- Weifeng Li
- Institute of High Performance Computing, A*STAR , Singapore, 138632
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Macdonald RD, Khajehpour M. Effects of the protein denaturant guanidinium chloride on aqueous hydrophobic contact-pair interactions. Biophys Chem 2014; 196:25-32. [PMID: 25268875 DOI: 10.1016/j.bpc.2014.08.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 08/20/2014] [Accepted: 08/20/2014] [Indexed: 11/19/2022]
Abstract
Guanidinium chloride (GdmCl) is one of the most common protein denaturants. Although GdmCl is well known in the field of protein folding, the mechanism by which it denatures proteins is not well understood. In fact, there are few studies looking at its effects on hydrophobic interactions. In this work the effect of GdmCl on hydrophobic interactions has been studied by observing how the denaturant influences model systems of phenyl and alkyl hydrophobic contact pairs. Contact pair formation is monitored through the use of fluorescence spectroscopy, i.e., measuring the intrinsic phenol fluorescence being quenched by carboxylate ions. Hydrophobic interactions are isolated from other interactions through a previously developed methodology. The results show that GdmCl does not significantly affect hydrophobic interactions between small moieties such as methyl groups and phenol; while on the other hand, the interaction of larger hydrophobes such as hexyl and heptyl groups with phenol is significantly destabilized.
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Affiliation(s)
- Ryan D Macdonald
- Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Mazdak Khajehpour
- Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.
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Magnesium chloride concentration-dependent formation of tofu-like precipitates with different physicochemical properties. Biosci Biotechnol Biochem 2013; 77:928-33. [PMID: 23649252 DOI: 10.1271/bbb.120864] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A wet precipitate is generated in the process of making tofu by adding a coagulant to the basic soymilk ingredient. We investigated the magnesium chloride concentration-dependent change in the precipitate weight. The wet precipitate weight dramatically increased following a short plateau phase at a low concentration of magnesium chloride. It is interesting that this weight slightly decreased following a long plateau phase at a high concentration. These low and high concentrations respectively induced precipitates with a smooth surface and rough surface. The precipitate with a smooth surface had a higher water content than that with a rough surface. These precipitates also had obviously different solubility in various chemical reagents. The different properties indicate that these precipitates were formed by different intermolecular interactions. These results can be utilized to more clearly understand the mechanisms involved in tofu formation.
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Koishi T, Yasuoka K, Willow SY, Fujikawa S, Zeng XC. Molecular Insight into Different Denaturing Efficiency of Urea, Guanidinium, and Methanol: A Comparative Simulation Study. J Chem Theory Comput 2013; 9:2540-51. [PMID: 26583851 DOI: 10.1021/ct3010968] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We have designed various nanoslit systems, whose opposing surfaces can be either hydrophobic, hydrophilic, or simply a water-vapor interface, for the molecular dynamics simulation of confined water with three different protein denaturants, i.e., urea, guanidinium chloride (GdmCl), and methanol, respectively. Particular attention is placed on the preferential adsorption of the denaturant molecules onto the opposing surfaces and associated resident time in the vicinal layer next to the surfaces, as well as their implication in the denaturing efficiency of different denaturant molecules. Our simulation results show that among the three denaturants, the occupancy of methanol in the vicinal layer is the highest while the residence time of Gdm is the longest. Although the occupancy and the residence time of urea in the vicinal layer is less than those of the other two denaturant molecules, urea entails "all-around" properties for being a highly effective denaturant. The distinct characteristics of three denaturants may suggest a different molecular mechanism for the protein denaturation. This comparative simulation by design allows us to gain additional insights, on the molecular level, into the denaturation effect and related hydrophobic effect.
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Affiliation(s)
- Takahiro Koishi
- Department of Applied Physics, University of Fukui, 3-9-1 Bunkyo,Fukui 910-8507, Japan
| | - Kenji Yasuoka
- Department of Mechanical Engineering, Keio University, Yokohama 223-8522, Japan
| | - Soohaeng Yoo Willow
- Department of Chemistry, Pohang University of Science and Technology, San 31, Hyojadong, Namgu, Pohang 790-784, South Korea
| | - Shigenori Fujikawa
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Xiao Cheng Zeng
- Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588, United States
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Sabirov DS, Zakirova AD, Tukhbatullina AA, Gubaydullin IM, Bulgakov RG. Influence of the charge on the volumes of nanoscale cages (carbon and boron-nitridefullerenes, Ge9z−Zintl ions, and cubic Fe4S4clusters). RSC Adv 2013. [DOI: 10.1039/c2ra22404f] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
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Qin F, Li G, Wang R, Wu J, Sun H, Chen R. Template-Free Fabrication of Bi2O3and (BiO)2CO3Nanotubes and Their Application in Water Treatment. Chemistry 2012; 18:16491-7. [DOI: 10.1002/chem.201201989] [Citation(s) in RCA: 112] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2012] [Revised: 08/20/2012] [Indexed: 11/10/2022]
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