Conductive nonconjugated radical polymer as high capacity organic cathode material for high-energy Li/Na ion batteries

Deng, Wenwen; Shi, Weibo; Liu, Qiuju; Jiang, Jiayue; Wang, Qingli; Guo, Chunxian

doi:10.1016/j.jpowsour.2020.228796

Cited by 35 publications

(28 citation statements)

References 51 publications

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“…However, the widespread adoption of SIBs is still restricted by some obstacles: 1) the large radius of sodium ions (Na + : 1.02 Å vs. Li + : 0.76 Å) results in large volumetric expansion, which constitutes a huge limitation on intercalation kinetics; 2) the structure of materials is easily collapsed, caused by the complicated phase conversion during changing–discharging process [5] . At present, the cathode materials for SIBs, which are changing from inorganic to organic, have been widely studied [6] . Therefore, in order to solve these issues, the selection and optimization of appropriate anode material with suitable structure is an effective way.…”

Section: Introductionmentioning

confidence: 99%

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Highly Efficient Sodium‐Ion Storage Enabled by an rGO‐Wrapped FeSe₂ Composite

Zhang

Zhong

et al. 2021

ChemSusChem

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Exploitation of superior anode materials is a key step to realize the pursuit of high‐performance sodium‐ion batteries. In this work, a reduced graphene oxide‐wrapped FeSe2 (FeSe2@rGO) composite derived from a metal–organic framework (MOF) was synthesized to act as the anode material of sodium‐ion batteries. The MOF‐derived carbon framework with high specific surface area could relieve the large volumetric change during cycling and ensure the structural stability of electrode materials. Besides, the rGO conductive network allowed to promote the electron transfer and accelerate reaction kinetics as well as to provide a protection role for the internal FeSe2. As a result, the FeSe2@rGO composite exhibited a high capacity of 350 mAh g−1 after 600 cycles at 5 A g−1. Moreover, in situ XRD was conducted to explore the reaction mechanism of the FeSe2@rGO composite upon sodiation/de‐sodiation. Importantly, the presented method for the synthesis of MOF‐derived materials wrapped by rGO could not only be used for FeSe2@rGO‐based sodium‐ion batteries but also for the different transition metal‐based composite materials for electrochemical devices, such as water splitting and sensors.

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Section: Introductionmentioning

confidence: 99%

“…[5] At present, the cathode materials for SIBs, which are changing from inorganic to organic, have been widely studied. [6] Therefore, in order to solve these issues, the selection and optimization of appropriate anode material with suitable structure is an effective way.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Sodium‐Ion Storage Enabled by an rGO‐Wrapped FeSe₂ Composite

Zhang

Zhong

et al. 2021

ChemSusChem

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“…Recently, interest in redox active radical polymers have garnered significant attention as functional materials in the fields ranging from organic electronics, [1–5] energy storage, [6–9] high performance conductors, [10, 11] high‐efficiency solar cells, [12, 13] light‐emitting devices, [14, 15] electrochromism, [16] organocatalysis, [17] biological imaging agents [18–20] and other energy related modules. This is primarily due to these polymers intrinsic potential to offer chemical and electrochemical tunable solutions for applications which are traditionally dominated by metals.…”

Section: Figurementioning

confidence: 99%

TEMPO Containing Radical Polymonothiocarbonate Polymers with Regio‐ and Stereo‐Regularities: Synthesis, Characterization, and Electrical Conductivity Studies

Bhat

Rashad

et al. 2021

Angewandte Chemie

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We report the synthesis of a (2,2,6,6‐tetramethylpiperidin‐1‐yl)oxidanyl) (TEMPO) appended polymonothiocarbonates through the ring‐opening copolymerization of (4‐glycidyloxy‐2,2,6,6‐tetramethylpiperidine‐1‐oxyl) (GTEMPO) in the presence of carbonyl sulfide under ambient conditions. We have prepared the atactic and isotactic versions of this polymer, using enantiopure R or S forms of the GTEMPO monomer in the latter instances. Cyclic voltammetry studies revealed both oxidation and reduction events that were characteristic of TEMPO radicals. Electrical conductivity of these polymers was measured as solid‐state films after annealing the samples above their glass transition temperatures. At room temperature the isotactic polymer shows much greater conductivity (ca. 10−4 S cm−1) than the atactic (ca. 10−7 S cm−1), attributed to the well‐defined stereochemistry and regulated charge transport pathway of isotactic polymer chains in contrast to the irregular structure of the atactic counterpart.

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“…A lot of efforts were directed to the development of more advanced batteries. For example, different approaches for LIB's development were used, such as nanostructured materials [1][2][3][4][5][6][7][8][9][10][11][12][13], the growth of the capacity and voltage of cathode materials [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30], hollow and porous and structures [13,[31][32][33][34][35][36][37][38][39][40][41][42][43][44], safety issues, including separator and liquid electrolyte studies [45][46][47][48]…”

Section: Introductionmentioning

confidence: 99%

Synthesis Method and Thermodynamic Characteristics of Anode Material Li3FeN2 for Application in Lithium-Ion Batteries

Popovich

Новиков

Wang³

et al. 2021

Materials

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Li3FeN2 material was synthesized by the two-step solid-state method from Li3N (adiabatic camera) and FeN2 (tube furnace) powders. Phase investigation of Li3N, FeN2, and Li3FeN2 was carried out. The discharge capacity of Li3FeN2 is 343 mAh g−1, which is about 44.7% of the theoretic capacity. The ternary nitride Li3FeN2 molar heat capacity is calculated using the formula Cp,m = 77.831 + 0.130 × T − 6289 × T−2, (T is absolute temperature, temperature range is 298–900 K, pressure is constant). The thermodynamic characteristics of Li3FeN2 have the following values: entropy S0298 = 116.2 J mol−1 K−1, molar enthalpy of dissolution ΔdHLFN = −206.537 ± 2.8 kJ mol−1, the standard enthalpy of formation ΔfH0 = −291.331 ± 5.7 kJ mol−1, entropy S0298 = 113.2 J mol−1 K−1 (Neumann–Kopp rule) and 116.2 J mol−1 K−1 (W. Herz rule), the standard Gibbs free energy of formation ΔfG0298 = −276.7 kJ mol−1.

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Conductive nonconjugated radical polymer as high capacity organic cathode material for high-energy Li/Na ion batteries

Cited by 35 publications

References 51 publications

Highly Efficient Sodium‐Ion Storage Enabled by an rGO‐Wrapped FeSe₂ Composite

Highly Efficient Sodium‐Ion Storage Enabled by an rGO‐Wrapped FeSe₂ Composite

TEMPO Containing Radical Polymonothiocarbonate Polymers with Regio‐ and Stereo‐Regularities: Synthesis, Characterization, and Electrical Conductivity Studies

Synthesis Method and Thermodynamic Characteristics of Anode Material Li3FeN2 for Application in Lithium-Ion Batteries

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Conductive nonconjugated radical polymer as high capacity organic cathode material for high-energy Li/Na ion batteries

Cited by 35 publications

References 51 publications

Highly Efficient Sodium‐Ion Storage Enabled by an rGO‐Wrapped FeSe2 Composite

Highly Efficient Sodium‐Ion Storage Enabled by an rGO‐Wrapped FeSe2 Composite

TEMPO Containing Radical Polymonothiocarbonate Polymers with Regio‐ and Stereo‐Regularities: Synthesis, Characterization, and Electrical Conductivity Studies

Synthesis Method and Thermodynamic Characteristics of Anode Material Li3FeN2 for Application in Lithium-Ion Batteries

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Highly Efficient Sodium‐Ion Storage Enabled by an rGO‐Wrapped FeSe₂ Composite

Highly Efficient Sodium‐Ion Storage Enabled by an rGO‐Wrapped FeSe₂ Composite