Unraveling the effects of anions in NixAy@CC (A=O, S, P) on Li-sulfur batteries

Xiao, Kaijun; Liu, Z.; Chen, Z.; Cao, Xun; Huang, Yizhong; Deng, Hui; Chen, X.; Shen, Zexiang; Liu, J.

doi:10.1016/j.mtnano.2020.100106

Cited by 6 publications

(7 citation statements)

References 32 publications

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“…To study the feasibility of MgCl 2 additive in regulating the solvation structure, DFT calculations were carried out to compare the interaction energy among Mg…Cl, Mg…PC, and Mg… EC systems (Fig. 3d) [42]. The detail solvation structures of Mg with EC and PC are shown in Fig.…”

Section: Effect Of the Mgcl 2 Additivementioning

confidence: 99%

Reversible Magnesium Metal Anode Enabled by Cooperative Solvation/Surface Engineering in Carbonate Electrolytes

Wang

Huang

et al. 2021

Nano-Micro Lett.

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Magnesium metal anode holds great potentials toward future high energy and safe rechargeable magnesium battery technology due to its divalent redox and dendrite-free nature. Electrolytes based on Lewis acid chemistry enable the reversible Mg plating/stripping, while they fail to match most cathode materials toward high-voltage magnesium batteries. Herein, reversible Mg plating/stripping is achieved in conventional carbonate electrolytes enabled by the cooperative solvation/surface engineering. Strongly electronegative Cl from the MgCl2 additive of electrolyte impairs the Mg…O = C interaction to reduce the Mg2+ desolvation barrier for accelerated redox kinetics, while the Mg2+-conducting polymer coating on the Mg surface ensures the facile Mg2+ migration and the effective isolation of electrolytes. As a result, reversible plating and stripping of Mg is demonstrated with a low overpotential of 0.7 V up to 2000 cycles. Moreover, benefitting from the wide electrochemical window of carbonate electrolytes, high-voltage (> 2.0 V) rechargeable magnesium batteries are achieved through assembling the electrode couple of Mg metal anode and Prussian blue-based cathodes. The present work provides a cooperative engineering strategy to promote the application of magnesium anode in carbonate electrolytes toward high energy rechargeable batteries.

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Section: Effect Of the Mgcl 2 Additivementioning

confidence: 99%

Reversible Magnesium Metal Anode Enabled by Cooperative Solvation/Surface Engineering in Carbonate Electrolytes

Wang

Huang

et al. 2021

Nano-Micro Lett.

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“…This idea electrode also exhibits the highest capacity with that of other reported host materials. [12,[23][24][25][44][45][46][47][48][49][50][51] The data is exhibited in Table S6, Supporting Information.…”

Section: Resultsmentioning

confidence: 99%

“…Especially carbon with various morphologies and structures have been demonstrated to be an effective host material for improving the overall electrochemical performance of Li-S batteries. [22] Compared with the composite structures in which the polysulfide adsorption materials are grown on the conductive layer (carbon cloth, [23][24][25] conductive paper [26] ), regular pores are the dominant factor for the carbon matrix to have high sulfur loading and effective physical confinement for polysulfides. The large area and highly regular porous carbon can confine the sulfur in the nano-pores alone and make the sulfur nano-sized to increase the utilization of active materials and the transmission of lithium ions.However, the surface affinity between carbon materials and sulfur is poor due to the nonpolar property causing poor immobilization of LiPSs.…”

mentioning

confidence: 99%

“…d) Discharge/charge curves of the N/O-HC900-S at various current densities from 0.1 to 3 C. e) Cycle performance at 0.2 C of the cells with the four host materials. f) Cycle performance for the N/O-HC900-S with different sulfur loading at a current density of 0.2 C. g) Long-cycling performance of the N/O-HC900-S cathodes at 0.5 and 1 C. h) Comparison of initial areal capacities and sulfur loading of the N/O-HC900-Swith that of other reported host materials [12,[23][24][25][44][45][46][47][48][49][50][51]. The data is exhibited in TableS6, Supporting Information.…”

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confidence: 99%

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A Highly Efficient Sulfur Host Enabled by Nitrogen/Oxygen Dual‐Doped Honeycomb‐Like Carbon for Advanced Lithium–Sulfur Batteries

Zou

Jing

Dai

et al. 2022

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High energy density and long cycle life of lithium–sulfur (Li–S) batteries suffer from the shuttle/expansion effect. Sufficient sulfur storage space, local fixation of polysulfides, and outstanding electrical conductivity are crucial for a robust cathode host. Herein, a modified template method is proposed to synthesize a highly regular and uniform nitrogen/oxygen dual‐doped honeycomb‐like carbon as sulfur host (N/O‐HC‐S). The unique structure not only offers physical entrapment for polysulfides (LiPSs) but also provides chemical adsorption and catalytic conversion sites of polysulfides. In addition, this structure offers enough space for loading sulfur, and a regular space of nanometer size can effectively prevent sulfur particles from accumulating. As expected, the as‐prepared N/O‐HC900‐S with high areal sulfur loading (7.4 mg cm−2) shows a high areal specific capacity of 7.35 mAh cm−2 at 0.2 C. Theoretical calculations also reveal that the strong chemical immobilization and catalytic conversion of LiPSs attributed to the spin density and charge distribution of carbon atoms will be influenced by the neighbor nitrogen/oxygen dopants. This structure that provides cooperative chemical adsorption, high lithium ions flux, and catalytic conversion for LiPSs can offer a new strategy for constructing a polysulfide confinement structure to achieve robust Li–S batteries.

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“…These issues, such as low sulfur consumption, short life cycles, and low energy density, severely impede the electrochemical performance of lithium-sulfur batteries and severely restrict their practical application. [10][11][12] Research on cathode materials has become essential for the development of high-performance lithium-sulfur batteries since the insulation of sulfur is the primary drawback of lithium-sulfur batteries. 13 The problem of poor sulfur conductivity can be greatly reduced when sulfur with good conductivity is mixed with certain structural matrix.…”

Section: Introductionmentioning

confidence: 99%

Mechanism and thermal effects of phytic acid-assisted porous carbon sheets for high-performance lithium–sulfur batteries

Cheng,

Liu,

Manasa

et al. 2023

Inorg. Chem. Front.

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Unraveling the effects of anions in NixAy@CC (A=O, S, P) on Li-sulfur batteries

Cited by 6 publications

References 32 publications

Reversible Magnesium Metal Anode Enabled by Cooperative Solvation/Surface Engineering in Carbonate Electrolytes

Reversible Magnesium Metal Anode Enabled by Cooperative Solvation/Surface Engineering in Carbonate Electrolytes

A Highly Efficient Sulfur Host Enabled by Nitrogen/Oxygen Dual‐Doped Honeycomb‐Like Carbon for Advanced Lithium–Sulfur Batteries

Mechanism and thermal effects of phytic acid-assisted porous carbon sheets for high-performance lithium–sulfur batteries

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