Enhanced pseudocapacitance contribution to outstanding Li-storage performance for a reduced graphene oxide-wrapped FeS composite anode

Huang, Mingbao; Xu, Anding; Duan, Huanhuan; Wu, Songping

doi:10.1039/c8ta00740c

Cited by 44 publications

(35 citation statements)

References 42 publications

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“…The related equations from previous reports, representing state‐of‐the‐art lithium insertion in FeS and Fe 3 C are shown below:

true 2 normalF normale normalS + 2 {normalL normali}^{+} + 2 {normale}^{-} \to {normalL normali}_{2} normalF normale S_{2} + normalF normale

true normalF normale normalS + 2 {normalL normali}^{+} + 2 {normale}^{-} \to {normalL normali}_{2} normalS + normalF normale

true {normalL normali}_{2} normalS + normalF normale - x normalL normali - x {normale}^{-} \to {normalL normali}_{2 - x} normalF normale S_{2}

true {normalL normali}_{2 - x} normalF normale S_{2} + x {normalL normali}^{+} + x {normale}^{-} \leftrightarrow {normalL normali}_{2} normalF normale S_{2}

true {normalL normali}_{2} normalF normale S_{2} + 2 normalL normali \to 2 {normalL normali}_{2} normalS + normalF normale

true {normalF normale}_{3} normalC + 1 / 6 normalL

…”

Section: Resultsmentioning

confidence: 99%

“…Upon the first five CV scans, the intensity of the redox peaks gradually decreases, indicating that the capacity decreases. This might result from unstable formation of the SEI layer and the sluggish reaction kinetics of pure FeS nanosheets . The CV curves of the FeS/Fe 3 C/C electrode are similar to those of FeS except for the additional broad cathodic peak at 0.39 V, which is attributed to side reactions between the FeS/Fe 3 C/C material and the electrolyte and SEI formation .…”

Section: Resultsmentioning

confidence: 99%

“…The related equations from previous reports, [3,17,[33][34][35] representing state-of-the-art lithium insertion in FeS and Fe 3 Ca re shown below:…”

Section: Electrochemical Performance and Kinetic Processesmentioning

confidence: 99%

“…The ever‐growing demand for portable electronic devices and large‐scale energy storage systems has promoted the great success of lithium‐ion batteries (LIBs) owing to their superior energy density, reliable stability, and long cycle lifetime. Further improvement of energy/power density and long cycling behavior of LIBs requires technological innovation of the electrode materials . Promising negative electrode materials are based on a conversion mechanism .…”

Section: Introductionmentioning

confidence: 99%

“…Further improvement of energy/power density and long cycling behavior of LIBs requires technological innovation of the electrode materials. [1][2][3][4] Promising negative electrode materials are based on ac onversion mechanism. [5] This mechanism resultsi n significantly higherc apacities of more than 1000 mAh g À1 [6] compared with, for example, graphite with at heoretical capacity of 372 mAh g À1 .…”

Section: Introductionmentioning

confidence: 99%

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Effect of Continuous Capacity Rising Performed by FeS/Fe₃C/C Composite Electrodes for Lithium‐Ion Batteries

Sarapulova

Pfeifer

et al. 2020

ChemSusChem

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FeS‐based composites are sustainable conversion electrode materials for lithium‐ion batteries, combining features like low cost, environmental friendliness, and high capacities. However, they suffer from fast capacity decay and low electron conductivity. Herein, novel insights into a surprising phenomenon of this material are provided. A FeS/Fe3C/C nanocomposite synthesized by a facile hydrothermal method is compared with pure FeS. When applied as anode materials for lithium‐ion batteries, these two types of materials show different capacity evolution upon cycling. Surprisingly, the composite delivers a continuous increase in capacity instead of the expected capacity fading. This unique behavior is triggered by a catalyzing effect of Fe3C nanoparticles. The Fe3C phase is a beneficial byproduct of the synthesis and was not intentionally obtained. To further understand the effect of interconnected carbon balls on FeS‐based electrodes, complementary analytic techniques are used. Ex situ X‐ray radiation diffraction and ex situ scanning electron microscopy are employed to track phase fraction and morphology structure. In addition, the electrochemical kinetics and resistance are evaluated by cyclic voltammetry and electrochemical impedance spectroscopy. These results reveal that the interconnected carbon balls have a profound influence on the properties of FeS‐based electrodes resulting in an increased electrode conductivity, reduced particle size, and maintenance of the structure integrity.

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“…The related equations from previous reports, representing state‐of‐the‐art lithium insertion in FeS and Fe 3 C are shown below:

true 2 normalF normale normalS + 2 {normalL normali}^{+} + 2 {normale}^{-} \to {normalL normali}_{2} normalF normale S_{2} + normalF normale

true normalF normale normalS + 2 {normalL normali}^{+} + 2 {normale}^{-} \to {normalL normali}_{2} normalS + normalF normale

true {normalL normali}_{2} normalS + normalF normale - x normalL normali - x {normale}^{-} \to {normalL normali}_{2 - x} normalF normale S_{2}

true {normalL normali}_{2 - x} normalF normale S_{2} + x {normalL normali}^{+} + x {normale}^{-} \leftrightarrow {normalL normali}_{2} normalF normale S_{2}

true {normalL normali}_{2} normalF normale S_{2} + 2 normalL normali \to 2 {normalL normali}_{2} normalS + normalF normale

true {normalF normale}_{3} normalC + 1 / 6 normalL

…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…The related equations from previous reports, [3,17,[33][34][35] representing state-of-the-art lithium insertion in FeS and Fe 3 Ca re shown below:…”

Section: Electrochemical Performance and Kinetic Processesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of Continuous Capacity Rising Performed by FeS/Fe₃C/C Composite Electrodes for Lithium‐Ion Batteries

Sarapulova

Pfeifer

et al. 2020

ChemSusChem

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Confined Metal Sulfides Nanoparticles into Porous Carbon Nanosheets with Surface‐Controlled Reactions for Fast and Stable Lithium‐Ion Batteries

Wang

Yang

et al. 2019

ChemElectroChem

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To achieve high‐performance lithium‐ion batteries (LIBs), the ion diffusion behavior in electrode materials is a challenging issue. Herein, 2D FeS/porous carbon nanosheets (FeS@PCSs) hybrids were successfully prepared by a facile, low‐cost strategy involving metal salt‐assisted chemical vapor deposition (CVD) and in situsulfuration process. The unique 2D structure is conducive to shorten the ion diffusion distance, buffer the volume change of FeS nanoparticles, as well as provide abundant sites for Li+ storage. Benefiting from the unique structure, the FeS@PCSs electrode exhibits high surface reaction contributions. When investigated as an anode for lithium‐ion batteries, the as‐prepared FeS@PCSs electrode exhibits a high reversible capacity (1026.2 mAh g−1 at 0.1 A g−1), excellent rate capability (647.2 mAh g−1 at 5 A g−1 and 561.1 mAh g−1 at 10 A g−1), and outstanding cycling stability (888.7 mAh g−1 at 1.0 A g−1 over 800 cycles). This work provides a cost‐effective and scalable route to synthesis the 2D carbon‐based transition metal compounds as high‐performance LIBs anodes.

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General Synthesis of Sulfonate‐Based Metal–Organic Framework Derived Composite of M_xS_y@N/S‐Doped Carbon for High‐Performance Lithium/Sodium Ion Batteries

Lin

Han

Liu

et al. 2020

Chemistry A European J

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A general and simple strategy is realized for the first time for the preparation of metal sulfide (MxSy) nanoparticles immobilized into N/S co‐doped carbon (NSC) through a one‐step pyrolysis method. The organic ligand 1,5‐naphthalenedisulfonic acid in the metal–organic framework (MOF) precursor is used as a sulfur source, and metal ions are sulfurized in situ to form MxSy nanoparticles, resulting in the formation of MxSy/NSC (M=Fe, Co, Cu, Ni, Mn, Zn) composites. Benefiting from the MxSy nanoparticles and conductive carbon, a synergistic effect of the composite is achieved. For instance, the composite of Fe7S8/NSC as an anode displays excellent long‐term cycling stability in lithium/sodium ion batteries. At 5 A g−1, large capacities of 645 mA h g−1 and 426.6 mA h g−1 can be retained after 1500 cycles for the lithium‐ion battery and after 1000 cycles for the sodium‐ion battery, respectively.

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Enhanced pseudocapacitance contribution to outstanding Li-storage performance for a reduced graphene oxide-wrapped FeS composite anode

Abstract: A facile and eco-friendly one-pot approach was utilized to synthesize a rGO-wrapped FeS nanoflakes composite, delivering a reversible capacity of 325 mA h g−1 at a large rate of 5.0 A g−1 after 1000 cycles.

Cited by 44 publications

References 42 publications

Effect of Continuous Capacity Rising Performed by FeS/Fe₃C/C Composite Electrodes for Lithium‐Ion Batteries

Effect of Continuous Capacity Rising Performed by FeS/Fe₃C/C Composite Electrodes for Lithium‐Ion Batteries

Confined Metal Sulfides Nanoparticles into Porous Carbon Nanosheets with Surface‐Controlled Reactions for Fast and Stable Lithium‐Ion Batteries

General Synthesis of Sulfonate‐Based Metal–Organic Framework Derived Composite of M_xS_y@N/S‐Doped Carbon for High‐Performance Lithium/Sodium Ion Batteries

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Enhanced pseudocapacitance contribution to outstanding Li-storage performance for a reduced graphene oxide-wrapped FeS composite anode

Abstract: A facile and eco-friendly one-pot approach was utilized to synthesize a rGO-wrapped FeS nanoflakes composite, delivering a reversible capacity of 325 mA h g−1 at a large rate of 5.0 A g−1 after 1000 cycles.

Cited by 44 publications

References 42 publications

Effect of Continuous Capacity Rising Performed by FeS/Fe3C/C Composite Electrodes for Lithium‐Ion Batteries

Effect of Continuous Capacity Rising Performed by FeS/Fe3C/C Composite Electrodes for Lithium‐Ion Batteries

Confined Metal Sulfides Nanoparticles into Porous Carbon Nanosheets with Surface‐Controlled Reactions for Fast and Stable Lithium‐Ion Batteries

General Synthesis of Sulfonate‐Based Metal–Organic Framework Derived Composite of MxSy@N/S‐Doped Carbon for High‐Performance Lithium/Sodium Ion Batteries

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Effect of Continuous Capacity Rising Performed by FeS/Fe₃C/C Composite Electrodes for Lithium‐Ion Batteries

Effect of Continuous Capacity Rising Performed by FeS/Fe₃C/C Composite Electrodes for Lithium‐Ion Batteries

General Synthesis of Sulfonate‐Based Metal–Organic Framework Derived Composite of M_xS_y@N/S‐Doped Carbon for High‐Performance Lithium/Sodium Ion Batteries