Constructing durable ultra-high loading and areal capacity lithium/sodium-selenium batteries via a robust aqueous network binder

Cheng, Lu; Sun, Yi; Ma, Chenhui; Feng, Jianshun; Liu, Jie; Liu, Anhua; Yue, Huijuan; Du, Fei; Zhang, Dong

doi:10.1016/j.cej.2021.133703

Cited by 7 publications

(7 citation statements)

References 42 publications

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“…Se with Li 2 Se are electronic insulation, leading to reduced utilization of Se and inferior electrochemical performance. 38 To solve these problems and fully unlock the potential capacity of ASSLSeBs, recent advances have focused on the construction of a functional Se cathode. These advancements aim to increase the utilization of active materials, mitigate volume changes, and ensure reliable interfacial contact.…”

Section: Modification Of the Se Cathodementioning

confidence: 99%

“…Se experiences significant volume variation (~88%) during charge‐discharge cycling. Se with Li 2 Se are electronic insulation, leading to reduced utilization of Se and inferior electrochemical performance 38 . To solve these problems and fully unlock the potential capacity of ASSLSeBs, recent advances have focused on the construction of a functional Se cathode.…”

Section: Design and Modification Of The Asslsebsmentioning

confidence: 99%

“…Elemental Se possesses a remarkable theoretical capacity of 675 mAh g −1 , enabling LSeBs to achieve an excellent energy density of approximately 2528 Wh L −1. 38 Nevertheless, the inherent insulating properties of Se hinder the full utilization of the theoretical capacity in Se cathodes. In the construction of ASSLSeBs, only the Se material is used as the cathode, which prevents the realization of reversible charging and discharging processes.…”

Section: Design and Modification Of The Asslsebsmentioning

confidence: 99%

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A review of all‐solid‐state lithium‐selenium batteries

Guo,

Zhang,

Tang

et al. 2023

Battery Energy

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Rechargeable lithium‐selenium batteries (LSeBs) are promising candidates for next‐generation energy storage systems due to their exceptional theoretical volumetric energy density (3253 mAh cm−3). However, akin to lithium‐sulfur batteries, the adoption of LSeBs has been hampered by problems such as polyselenides migration in liquid electrolytes, uncontrolled dendrite growth and safety concerns. To overcome these issues, researchers proposed to use the solid‐state electrolytes (SSEs) as a method, which could mitigate the formation of polyselenides. However, practical utilization of the all‐solid‐state Li‐Se batteries (ASSLSeBs) face significant obstacles, including sluggish redox kinetics during Se conversion (Se ↔ Li2Se), inadequate interfacial contact and formation of Li dendrites. Scientists have applied strategies to tackle these challenges. This article offers a timely review of emerging strategies. The article begins by conducting a detailed analysis of the working principles of ASSLSeBs and identifying the critical challenges that hinder practical application. Subsequently, the article presents a comprehensive summary of various strategies aimed at boosting the development of ASSLSeBs, which encompass advancements in Se cathode materials, optimization of SSEs, design of stable Li anodes, and approaches in addressing the interfacial challenge. Finally, the article offers further perspectives about promoting the application of ASSLSeBs. It highlights the need for continued research and development to overcome existing limitations. Overall, by understanding these emerging strategies, researchers could enhance the technology of LSeBs, bringing us closer to the practical realization of high‐energy storage systems.

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Section: Modification Of the Se Cathodementioning

confidence: 99%

Section: Design and Modification Of The Asslsebsmentioning

confidence: 99%

Section: Design and Modification Of The Asslsebsmentioning

confidence: 99%

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A review of all‐solid‐state lithium‐selenium batteries

Guo,

Zhang,

Tang

et al. 2023

Battery Energy

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“…To date, significant efforts have been devoted to overcoming severe volume changes, including the use of confined carbon matrixes, [3] metal compound hosts [4] or suitable binders. [5] On the other hand, much less attention has been paid to Na 2 Se, which accounts for the total theoretical capacity. [6] Due to the difficulty in activating an electron to the conduction band, Na 2 Se acts as an insulator hindering the electrons transfer.…”

Section: Introductionmentioning

confidence: 99%

Sodium‐Selenium Batteries with Outstanding Rate Capability by Introducing Cubic Mn₂O₃ Electrocatalyst**

Erdol,

Ata,

Demir‐Cakan

2023

ChemSusChem

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With their high volumetric capacity and electronic conductivity, sodium‐selenium (Na‐Se) batteries have attracted attention for advanced battery systems. However, the irreversible deposition of sodium selenide (Na2Se) results in rapid capacity degradation and poor Coulombic efficiency. To address these issues, cubic α‐Mn2O3 is introduced herein as an electrocatalyst to effectively catalyze Na2Se conversion and improve the utilization of active materials. The results show that the addition of 10 wt% Mn2O3 in the Se/KB composite enhances the conversion from Na2Se to Se by lowering activation energy barrier and leads to fast sodium‐ion kinetics and low internal resistance. Consequently, the Mn2O3‐based composite delivers a high specific capacity of 635 mAh·g‐1 at 675 mA·g‐1 after 250 cycles as well as excellent cycling stability for 800 cycles with a high specific capacity of 317 mAh·g‐1 even at the high current density of 3375 mA·g‐1. Due to the cubic Mn2O3 electrocatalyst, the performance of the composites is mostly superior to existing state‐of‐the‐art Na‐Se batteries reported in the literature.

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“…To verify the formation of hydrogen bonds between Ti 3 C 2 T x and SA, 1 H nuclear magnetic resonance (NMR) spectroscopy was employed. As depicted in Figure b, the proton peaks from 3.6 to 5.0 ppm of SA are shifted upon the introduction of Ti 3 C 2 T x , indicating the successful cross-bonding between Ti 3 C 2 T x and SA. − Furthermore, Fourier transform infrared (FTIR) spectroscopy displays significant peak shifts, demonstrating strong intermolecular binding between Ti 3 C 2 T x and SA. − For instance, the bond at 1612 cm –1 of SA, corresponding to the carboxylate salt groups, shifts to 1614 cm –1 after cross-linking with Ti 3 C 2 T x . Similarly, the broad band at 3492 cm –1 , attributed to the stretching of hydroxyl groups, moves to 3427 cm –1 , implying the occurrence of interactions between Ti 3 C 2 T x and SA.…”

mentioning

confidence: 99%

Small Things Make a Big Difference: Conductive Cross-Linking Sodium Alginate@MXene Binder Enables High-Volumetric-Capacity and High-Mass-Loading Li–S Battery

Cheng,

Tian,

Zhao

et al. 2023

Nano Lett.

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Binders are crucial for maintaining the integrity of an electrode, and there is a growing need for integrating multiple desirable properties into the binder for high-energy batteries, yet significant challenges remain. Here, we successfully synthesized a new binder by cross-linking sodium alginate (SA) with MXene materials (Ti 3 C 2 T x ). Besides the improved adhesion and mechanical properties, the integrated SA@Ti 3 C 2 T x binder demonstrates much improved electronic conductivity, which enables ruling out the fluffy conductive additive from the electrode component with enhanced volumetric capacity. When SA@Ti 3 C 2 T x is used to fabricate sulfur (S) cathodes, the conductive-additive-free electrode demonstrates extremely high capacity (1422 mAh cm −3 /24.5 mAh cm −2 ) under an S loading of 17.2 mg cm −2 for Li−S batteries. Impressively, the SA@ Ti 3 C 2 T x binder shows remarkable feasibility in other battery systems such as Na−S and LiFePO 4 batteries. The proposed strategy of constructing a cross-linking conductive binder opens new possibilities for designing high-mass-loading electrodes with high volumetric capacity.

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Constructing durable ultra-high loading and areal capacity lithium/sodium-selenium batteries via a robust aqueous network binder

Cited by 7 publications

References 42 publications

A review of all‐solid‐state lithium‐selenium batteries

A review of all‐solid‐state lithium‐selenium batteries

Sodium‐Selenium Batteries with Outstanding Rate Capability by Introducing Cubic Mn₂O₃ Electrocatalyst**

Small Things Make a Big Difference: Conductive Cross-Linking Sodium Alginate@MXene Binder Enables High-Volumetric-Capacity and High-Mass-Loading Li–S Battery

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Constructing durable ultra-high loading and areal capacity lithium/sodium-selenium batteries via a robust aqueous network binder

Cited by 7 publications

References 42 publications

A review of all‐solid‐state lithium‐selenium batteries

A review of all‐solid‐state lithium‐selenium batteries

Sodium‐Selenium Batteries with Outstanding Rate Capability by Introducing Cubic Mn2O3 Electrocatalyst**

Small Things Make a Big Difference: Conductive Cross-Linking Sodium Alginate@MXene Binder Enables High-Volumetric-Capacity and High-Mass-Loading Li–S Battery

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Product

Resources

About

Sodium‐Selenium Batteries with Outstanding Rate Capability by Introducing Cubic Mn₂O₃ Electrocatalyst**