Surface controlled pseudo-capacitive reactions enabling ultra-fast charging and long-life organic lithium ion batteries

Amin, Kamran; Zhang, Jianqi; Zhou, Hang-Yu; Lu, Ruichiao; Zhang, Miao; Ashraf, Nawal; Yang, Cheng; Mao, Lijuan; Faul, Charl F. J.; Wei, Zhixiang

doi:10.1039/d0se00610f

Cited by 35 publications

(17 citation statements)

References 36 publications

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“…In this direction, high rate performance electrode materials can be designed by creating hierarchical nanostructures which possess a high surface area as well as porosity and defects (surface as well as bulk) to facilitate the ion transfer through these morphological/surfacedriven channels on or near the surfaces. 13,21,22 In particular, one-dimensional nanofibers not only possess a large specific surface area for high activity but also offer sufficient void/ spaces in comparison to the nanoparticles which further tolerate the volume change during the long-term cycling process. 15,23−25 Hence, in this work, nanostructures (nanoparticles/nanofibers) of lithium iron oxides (LFO) are prepared by combustion/electrospinning techniques.…”

Section: Introductionmentioning

confidence: 99%

“…However, a surface-enabled electrode kinetics process can resolve this issue to a great extent where the charge-transfer redox reactions do occur at the surface and/or near the surface region of the electrodes. In this direction, high rate performance electrode materials can be designed by creating hierarchical nanostructures which possess a high surface area as well as porosity and defects (surface as well as bulk) to facilitate the ion transfer through these morphological/surface-driven channels on or near the surfaces. ,, In particular, one-dimensional nanofibers not only possess a large specific surface area for high activity but also offer sufficient void/spaces in comparison to the nanoparticles which further tolerate the volume change during the long-term cycling process. ,− Hence, in this work, nanostructures (nanoparticles/nanofibers) of lithium iron oxides (LFO) are prepared by combustion/electrospinning techniques. XPS and EPR analyses confirm the presence of a higher concentration of oxygen defects in the nanofibers than the nanoparticles of LFO, and therefore, improved conductivity is also found in the nanofibers.…”

Section: Introductionmentioning

confidence: 99%

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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: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Sundriyal

Sharma

2021

Energy Fuels

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“…The Warburg coefficient was obtained from the slope of the graph between inverse of the square root of the angular frequency and real impedance Z re . 59 As depicted in Figure S10a,b, the values of σ w for PPAPT and PTO were found to be 1198.8 and 1724.3, respectively. Moreover, Li + diffusion coefficient in both electrodes was computed with the assistance of the below equation.…”

Section: Resultsmentioning

confidence: 91%

“…30 The following equation can be utilized to investigate the diffusion of Li + in PTO and PPAPT electrode. 59 σ ω…”

Section: Resultsmentioning

confidence: 99%

A Flame-Retardant and Insoluble Inorganic–Organic Hybrid Cathode Material Based on Polyphosphazene with Pyrene-Tetraone for Lithium Ion Batteries

Yeşilot

Kılıç

Sarıyer

et al. 2021

ACS Appl. Energy Mater.

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A cathode material based on polyphosphazene with pyrene-4,5,9,10-tetraone (PTO) units as electroactive groups with a high specific capacity in the side chain, poly[(bis(2-amino-4,5,9,10-pyrenetetraone)]phosphazene (PPAPT), is synthesized. The structural characterization of PPAPT is carried out by using appropriate standard spectroscopic methods such as 31P NMR spectroscopy, FT-IR, DSC, and TGA. The material is found to be an insoluble and halogen-free flame retardant in accordance with the results of the simple flame test and solubility control in electrolyte solutions accompanied by UV–vis analysis. The electrochemical performance of PPAPT is evaluated as a Li–ion battery cathode material. The fabricated cells demonstrate immensely good capacity retention with 72% after 500 discharge–charge cycles at a high current density of 20 C. In comparison with the pristine PTO, introducing a PTO unit into the side chain of the polyphosphazene leads to substantially improved performance because of the lowered LUMO energy levels of PPAPT. In order to investigate the reversibility of carbonyl groups as an electroactive side with respect to their chemical composition, complementary chemical post-mortem analyses are performed by FT-IR, X-ray photoelectron spectroscopy (XPS) analysis. Density functional theory (DFT) calculations are also proposed to determine HOMO–LUMO levels and investigate the lithiation mechanism of PPAPT.

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“…Moreover, the formation of a hybrid material with conductive additives proved to be an effective way to increase the performance of ImCOFs. For example, growth of conductive polymer in their pores [ 94 ] or synthesis of the TpCOF on the surface of conductive carbon nanotubes (CNTs) [ 95 ] have been reported as promising strategies for that purpose.…”

Section: Schiff‐base Materials With Added Redox Functionalitiesmentioning

confidence: 99%

Schiff‐bases for sustainable battery and supercapacitor electrodes

2021

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The quest for more efficient ways to store electrical energy prompted the development of different storage devices over the last decades. This includes but is not limited to different battery concepts and supercapacitors. However, modern batteries rely on electrochemical principles that often involve transition metals which can for instance suffer from toxicity or limited availability. More sustainable alternatives are needed. This sparked the search for organic electrode materials. Nevertheless, compared to their inorganic counterparts, organic electrode materials remain less intensely investigated. Besides the often more complicated electrochemical principles, one likely reason for that are the complex synthetic skills required to develop novel organic materials. Here we review materials synthesized by an old and comparably simple reaction from the field of organic chemistry, namely Schiff‐base formation. This reaction can often yield materials under relatively mild conditions, making them especially interesting for the formation of sustainable electrodes. The main weakness of Schiff‐base materials, susceptibility to hydrolysis, is of limited concern in most of the battery systems as they mostly anyways require water‐free conditions. This review gives an overview of some selected nanomaterials obtained from Schiff‐base formation as well as their carbonized derivatives which are of interest for energy storage. Firstly, the general chemistry of Schiff‐bases is introduced, followed by an in‐depth survey of the most important breakthroughs in the formation of organic battery electrodes that involve materials based on Schiff‐base reaction. Lastly, an outlook considering the main hurdles as well as future perspectives of this research area is given.

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Surface controlled pseudo-capacitive reactions enabling ultra-fast charging and long-life organic lithium ion batteries

Abstract: To develop ultra-fast charging and long-life lithium ion batteries, a surface-controlled pseudo-capacitive reaction mechanism for organic lithium ion batteries is developed based on a coaxial nanocomposite of an active anthraquinone-based covalent organic framework and CNTs.

Cited by 35 publications

References 36 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

A Flame-Retardant and Insoluble Inorganic–Organic Hybrid Cathode Material Based on Polyphosphazene with Pyrene-Tetraone for Lithium Ion Batteries

Schiff‐bases for sustainable battery and supercapacitor electrodes

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Surface controlled pseudo-capacitive reactions enabling ultra-fast charging and long-life organic lithium ion batteries

Abstract: To develop ultra-fast charging and long-life lithium ion batteries, a surface-controlled pseudo-capacitive reaction mechanism for organic lithium ion batteries is developed based on a coaxial nanocomposite of an active anthraquinone-based covalent organic framework and CNTs.

Cited by 35 publications

References 36 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

A Flame-Retardant and Insoluble Inorganic–Organic Hybrid Cathode Material Based on Polyphosphazene with Pyrene-Tetraone for Lithium Ion Batteries

Schiff‐bases for sustainable battery and supercapacitor electrodes

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Product

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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