High-performance ZnTe-TiO2-C nanocomposite with half-cell and full-cell applications as promising anode material for Li-Ion batteries

Nguyen, Quoc Hanh; Nguyen, Quoc Hai; Hur, Jaehyun

doi:10.1016/j.apsusc.2019.144718

Cited by 13 publications

(11 citation statements)

References 46 publications

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“…The inferior capacities and cyclability in the full cell may be caused by many factors, such as the mismatch of the current densities or the inferior cyclability of our self-prepared LCO cathode itself in half-cell measurements. , Further, the energy density of the full cell-based LFO nanofiber was obtained by the average potential of the charge–discharge curve and the total active mass of both electrodes. The energy density was found to be 160 (±5) Wh kg –1 , which is better than many recently reported full Li-ion cells − and comparable to the commercial products. , These impressive results in the full-cell configuration also demonstrate the practical viability of LFO nanofibers as anodes for next-generation high-performance, cost-effective LIBs for power back up, etc.…”

Section: Li-storage Propertiessupporting

confidence: 57%

Morphology and Oxygen Defects Mediated Improved Pseudocapacitive Li⁺ Storage of Conversion-Based Lithium Iron Oxide

Sundriyal

Sharma

2021

Energy Fuels

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Conversion-based oxides, particularly iron oxides, are projected to be viable, green, and cost-effective materials for Liion battery (LIB) anode. However, their low electronic/ionic conductivity, inferior initial coulombic efficiency (ICE), and poor cyclic/rate performance are some of the challenges. To address these issues, a combined approach of utilizing the nanostructures of iron oxides and creating oxygen defects in them may be an effective strategy to improve their Li-storage performance. Thus, in the present work, nanostructures (nanoparticles/nanofibers) of lithium iron oxides (LiFe 5 O 8 , LFO) are prepared and thoroughly characterized by FE-SEM, TEM, TG, XRD, BET, and i−v characteristics. XPS and EPR analyses are carried out to quantify the oxygen defects in the as-prepared samples. LFO nanofibers shows better conductivity (almost 5.5 times higher) than their corresponding nanoparticles, which was ascribed to the presence of a higher concentration of oxygen defects in the nanofibers. Further, as LIB anode, nanofibers of LFO exhibits a two times greater specific capacity, i.e., 505 (±10) mAh g −1 at 50 mA g −1 , after 60 cycles and higher pseudocapacitive Li + storage. Further, a better rate performance of LFO nanofibers is observed as compared to LFO nanoparticles. Moreover, ex-situ measurements (XRD, XPS, and M−H) were also carried out to identify the Li-storage mechanism during the lithiation/delithiation process. Furthermore, the practical application of LFO nanofibers as LIB anode was tested in a full cell configuration and delivers an energy density of 160 (±5) Wh kg −1 (according to the total active mass of the anode and cathode). In this study, we have shown that how one can tune the Li kinetics oxygen defects/morphology and thereby the Li-storage properties of cost-effective and green iron-based material.

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Section: Li-storage Propertiessupporting

confidence: 57%

Morphology and Oxygen Defects Mediated Improved Pseudocapacitive Li⁺ Storage of Conversion-Based Lithium Iron Oxide

Sundriyal

Sharma

2021

Energy Fuels

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“…Their centers were in sharp contrast to their edges, showing a distinctly hollow structure. Their relative lattice fringe spacing was 0.352 nm, corresponding to the (101) diffraction planes of rutile TiO 2 (Figure 2b) (Nguyen et al, 2020). The EDX mapping indicates that Ti and O elements were contained in the TiO 2 hollow spheres (Figure 2c).…”

Section: Resultsmentioning

confidence: 98%

TiO2 Hollow Spheres With Flower-Like SnO2 Shell as Anodes for Lithium-Ion Batteries

Weng

Zhang

et al. 2021

Front. Chem.

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SnO2 is a promising anode material for lithium-ion batteries due to its high theoretical specific capacity and low operation voltage. However, its poor cycling performance hinders its commercial application. In order to improve the cycling stability of SnO2 electrodes, novel flower-like SnO2/TiO2 hollow spheres were prepared by facile hydrothermal method using carbon spheres as templates. Their flower-like shell and mesoporous structure highlighted a large specific surface area and excellent ion migration performance. Their TiO2 hollow sphere matrix and 2D SnO2 nano-flakes ensured good cycle stability. The electrochemical measurements indicated that novel flower-like SnO2/TiO2 hollow spheres delivered a high specific capacity, low irreversible capacity loss and superior rate performance. After 1,000 cycles at current densities of 200 mA g−1, the capacity of the flower-like SnO2/TiO2 hollow spheres was still maintained at 720 mAh g−1. Their rate capacity reached 486 mAh g−1 when the current densities gradually increase to 2,000 mA g−1.

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“…Secondly, the connection and arrangement among the individual nanomaterials must be close and uniform, avoiding aggregation, mechanical stress such as cracking and falling during charge/discharge. 172 Thirdly, the presence of added phase needs to maximumly provide phase boundaries and interfaces facilitating the Li + diffusion, electron transport, and positive interaction to the electrolyte. In addition to the inherent merits of common carbonaceous materials, it is worth noting that EOG foam with a perpendicular graphene network and easily accessible large surface area was very favorable to expose most "hot spots"-the chemically active graphene edges, which were regarded as key sites for chemical interactions and were generally not accessible in traditional graphene structures.…”

Section: Compositional Modification Of Tio 2 -Bmentioning

confidence: 99%

“…Firstly, a component ratio of added constituents should be suitable to ensure achieving the highest performance without the thicker electrode. Secondly, the connection and arrangement among the individual nanomaterials must be close and uniform, avoiding aggregation, mechanical stress such as cracking and falling during charge/discharge 172 . Thirdly, the presence of added phase needs to maximumly provide phase boundaries and interfaces facilitating the Li + diffusion, electron transport, and positive interaction to the electrolyte.…”

Section: Hybrid Designs/nanocomposites Between Tio2‐b and Graphene/gr...mentioning

confidence: 99%

Recent advances in hierarchical anode designs of TiO₂‐B nanostructures for lithium‐ion batteries

Pham

Bui

Lee

2021

Intl J of Energy Research

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The state-of-the-art development progress of the fabrication, design, modification, and applications of TiO 2 -B-based hierarchical nanostructures with a wellcontrolled size and morphology in lithium-ion battery (LIB) applications has been summarized and discussed. Based on studying on lithiation/delithiation on mechanisms of a typical metal oxide nanomaterials, along with doping with foreign atoms (metal or non-metal), using electronically conductive additives (graphene/graphene derivatives), as well as designing and using hierarchical anode-material nanostructures (hybrids/composites) containing two or more constituents in LIB applications, these strategies have provided many great opportunities to take maximum advantage of both the high capacity and rate capacity while avoiding significant capacity loss after charge/discharge cycling. In this review, the advances in TiO 2 -B-based anode structures at the nanoscale for LIBs have been discussed in two major sections, including (a) hierarchical heterostructures based on TiO 2 -B and metal, non-metal, transition metal oxides (TMOs), and transition metal dichalcogenides (TMDs); and (b) hybrid designs/nanocomposites between TiO 2 -B and graphene/graphene derivatives. The in-depth understanding of structure-property relationships as well as detailed suggestions on the mechanism, reason, and origin of the excellent enhancement in electrochemical performance in the above strategies, has been presented and highlighted. K E Y W O R D S advanced anodes, bronze TiO 2 (B), composite anodes, hybrid anodes, lithium-ion batteries (LIBs)

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High-performance ZnTe-TiO2-C nanocomposite with half-cell and full-cell applications as promising anode material for Li-Ion batteries

Cited by 13 publications

References 46 publications

Morphology and Oxygen Defects Mediated Improved Pseudocapacitive Li⁺ Storage of Conversion-Based Lithium Iron Oxide

Morphology and Oxygen Defects Mediated Improved Pseudocapacitive Li⁺ Storage of Conversion-Based Lithium Iron Oxide

TiO2 Hollow Spheres With Flower-Like SnO2 Shell as Anodes for Lithium-Ion Batteries

Recent advances in hierarchical anode designs of TiO₂‐B nanostructures for lithium‐ion batteries

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High-performance ZnTe-TiO2-C nanocomposite with half-cell and full-cell applications as promising anode material for Li-Ion batteries

Cited by 13 publications

References 46 publications

Morphology and Oxygen Defects Mediated Improved Pseudocapacitive Li+ Storage of Conversion-Based Lithium Iron Oxide

Morphology and Oxygen Defects Mediated Improved Pseudocapacitive Li+ Storage of Conversion-Based Lithium Iron Oxide

TiO2 Hollow Spheres With Flower-Like SnO2 Shell as Anodes for Lithium-Ion Batteries

Recent advances in hierarchical anode designs of TiO2‐B nanostructures for lithium‐ion batteries

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Morphology and Oxygen Defects Mediated Improved Pseudocapacitive Li⁺ Storage of Conversion-Based Lithium Iron Oxide

Morphology and Oxygen Defects Mediated Improved Pseudocapacitive Li⁺ Storage of Conversion-Based Lithium Iron Oxide

Recent advances in hierarchical anode designs of TiO₂‐B nanostructures for lithium‐ion batteries