CoP nanocages intercalated MXene nanosheets as a bifunctional mediator for suppressing polysulfide shuttling and dendritic growth in lithium-sulfur batteries

Ren, Yilun; Wang, Biao; Liu, Hanlu; Wu, Hao Bin; Bian, Haifeng; Ma, Yujie; Lu, Hong‐Yan; Tang, Shaochun; Meng, Xiangkang

doi:10.1016/j.cej.2022.138046

Cited by 30 publications

(12 citation statements)

References 51 publications

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“…The high areal capacity of 2.7 and 3.8 mAh cm –2 can still be obtained after 100 cycles at a current density of 0.5 mA cm –2 (Figure b). Additionally, recently published studies (Figure c) on modified separators were compared in terms of different aspects. ,− These results further proved that the 3DCS-FMO@C separator can still effectively improve sulfur electrochemistry and inhibit the shuttling of LIPSs in the case of high sulfur loading and poor electrolyte.…”

Section: Results and Discussionmentioning

confidence: 56%

Improvement of Redox Kinetics of Dendrite-Free Lithium–Sulfur Battery by Bidirectional Catalysis of Cationic Dual-Active Sites

Feng

Wang

Wen

et al. 2023

ACS Sustainable Chem. Eng.

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The practical application of lithium–sulfur batteries (LSBs) is hampered by the slow lithium polysulfide (LIPS) conversion kinetics and the uncontrollable anode-metal lithium dendrites. Herein, a three-dimensional cation dual-active-site eggshell structure compound (3DCS-FMO@C) was synthesized by soft template, ion exchange, and pyrolysis to modify the commercial separator. Experimental and theoretical analysis results showed that Mn2+ and Fe2+ sites in 3DCS-FMO@C can synergistically adsorb LIPSs, effectively regulate the bidirectional conversion dynamics of intermediate liquid-phase LIPSs and solid-phase lithium sulfide, and reduce the energy barrier of the reaction. The 3DCS-FMO@C-modified separator with high mechanical stability and no reduction in ion diffusion also had a lithiophilic central core that can homogenize the lithium-ion flow, thereby inhibiting the dendrite growth of lithium. Based on the above advantages, 3DCS-FMO@C-modified separator LSBs had better electrochemical performance, including an initial capacity of 1530 mAh g–1 at 0.1C and an ultralow decay rate of 0.029% for 1000 cycles at 0.5C. A high area capacity of 8.7 mAh cm–2 was achieved even with high sulfur loading and poor electrolyte. This work provided a basis for understanding the bidirectional catalysis for practical application in LSBs and simultaneously solved the problem of lithium dendrites.

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Section: Results and Discussionmentioning

confidence: 56%

Improvement of Redox Kinetics of Dendrite-Free Lithium–Sulfur Battery by Bidirectional Catalysis of Cationic Dual-Active Sites

Feng

Wang

Wen

et al. 2023

ACS Sustainable Chem. Eng.

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“…TMP is prone to agglomeration in the absence of exceptional matrixes loading, leading to the accumulation of a large number of lithiophilic/sulfiphilic sites and interfering with the uniform nucleation of negative Li. Meng et al [89] illustrated that CoP nanocages afford a synergistic effect of fast conversion kinetics toward LiPSs and strong chemical interactions (see Figure 6d and e). Furthermore, the overpotential of the cell is ~11 mV lower than the reference cell (Figure 6f), demonstrating that CoP reduces the local current density and Li nucleation barrier.…”

Section: Metal Phosphidesmentioning

confidence: 99%

Section: Othersmentioning

confidence: 99%

Dual‐Functional Hosts for Polysulfides Conversion and Lithium Plating/Stripping towards Lithium‐Sulfur Full Cells

Shen

Sun

et al. 2022

Chemistry A European J

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The practical application of lithium‐sulfur (Li−S) batteries is greatly hindered by the shuttle effect of dissolved polysulfides in the sulfur cathode and the severe dendritic growth in the lithium anode. Adopting one type of effective host with dual‐functions including both inhibiting polysulfide dissolution and regulating Li plating/stripping, is recently an emerging research highlight in Li−S battery. This review focuses on such dual‐functional hosts and systematically summarizes the recent research progress and application scenarios. Firstly, this review briefly describes the stubborn issues in Li−S battery operations and the sophisticated counter measurements over the challenges by dual‐functional behaviors. Then, the latest advances on dual‐functional hosts for both cathode and anode in Li−S full cells are catalogued as species, including metal chalcogenides, metal carbides, metal nitrides, heterostuctures, and the possible mechanisms during the process. Besides, we also outlined the theoretical calculation tools for the dual‐functional host based on the first principles. Finally, several sound perspectives are also rationally proposed for fundamental research and practical development as guidelines.

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“…2,12,13 Several strategies have been investigated to eradicate the shuttling of LiPSs, including the use of nanomaterials as sulfur hosts, 14,15 composite sulfur cathodes with alkali metals, 16 multifunctional binders to immobilize the LiPS, 11,17,18 electrolyte engineering with additives, 4,19 and modication of the separator and interface engineering. [20][21][22] Among these approaches, modication of the separator has been the most effective, although it remains a challenge to enhance the utilization of LiPSs. A separator is a key part of a battery; it maintains the diffusion of Li + ions and avoids direct contact between the anode and cathode.…”

Section: Introductionmentioning

confidence: 99%

Capillary-induced self-crumpled and sulfur-deficient MoS₂ nanosheets inhibit polysulfide cycling in lithium–sulfur batteries

Paste

et al. 2023

J. Mater. Chem. A

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CoP nanocages intercalated MXene nanosheets as a bifunctional mediator for suppressing polysulfide shuttling and dendritic growth in lithium-sulfur batteries

Cited by 30 publications

References 51 publications

Improvement of Redox Kinetics of Dendrite-Free Lithium–Sulfur Battery by Bidirectional Catalysis of Cationic Dual-Active Sites

Improvement of Redox Kinetics of Dendrite-Free Lithium–Sulfur Battery by Bidirectional Catalysis of Cationic Dual-Active Sites

Dual‐Functional Hosts for Polysulfides Conversion and Lithium Plating/Stripping towards Lithium‐Sulfur Full Cells

Capillary-induced self-crumpled and sulfur-deficient MoS₂ nanosheets inhibit polysulfide cycling in lithium–sulfur batteries

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CoP nanocages intercalated MXene nanosheets as a bifunctional mediator for suppressing polysulfide shuttling and dendritic growth in lithium-sulfur batteries

Cited by 30 publications

References 51 publications

Improvement of Redox Kinetics of Dendrite-Free Lithium–Sulfur Battery by Bidirectional Catalysis of Cationic Dual-Active Sites

Improvement of Redox Kinetics of Dendrite-Free Lithium–Sulfur Battery by Bidirectional Catalysis of Cationic Dual-Active Sites

Dual‐Functional Hosts for Polysulfides Conversion and Lithium Plating/Stripping towards Lithium‐Sulfur Full Cells

Capillary-induced self-crumpled and sulfur-deficient MoS2 nanosheets inhibit polysulfide cycling in lithium–sulfur batteries

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Capillary-induced self-crumpled and sulfur-deficient MoS₂ nanosheets inhibit polysulfide cycling in lithium–sulfur batteries