A compact inorganic layer for robust anode protection in lithium‐sulfur batteries

Yao, Yuxing; Zhang, Xueqiang; Li, Bo‐Quan; Yan, Chong; Chen, Pengyu; Huang, Jia‐Qi; Zhang, Qiang

doi:10.1002/inf2.12046

Cited by 204 publications

(107 citation statements)

References 68 publications

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“…The subtle differences introduced due to the third anion from the lithium salt affect the final surface morphology of the lithium metal electrode, which will lead to influences on the electrochemical cycling during battery applications. This morphological effect has also been noted by Yao et al . where the use of Li[FSI] in [bmim][NO 3 ] allowed the exposure of lithium metal to [FSI] ‐ and [NO 3 ] − anions to form stable SEI layers and morphologies.…”

Section: Anion Types and Their Propertiessupporting

confidence: 69%

Electrolytes for Lithium (Sodium) Batteries Based on Ionic Liquids: Highlighting the Key Role Played by the Anion

Rüther

Bhatt

Best

et al. 2020

Batteries & Supercaps

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Research since 2000 has clearly shown that ionic liquids (ILs) and their metal salt containing mixtures have good potential to be considered as electrolytes (ILELs) in lithium and other electropositive metal (ion) batteries. This outcome is particularly relevant for the operation of such devices in elevated temperature regimes where ILELs would have a significant advantage over the conventional organic carbonate solvent/LiPF6 electrolytes that, due to their limited thermal stability and flammability, cause concerns about the safety of current LIB technology. There is evidence from a number of review articles that physicochemical properties can be tailored such that ILELs could meet requirements for operating in batteries at lower temperature regimes. By drawing on a broad range of cation/anion combinations, there is further evidence from these papers that within a particular family of cations, the physicochemical properties of ILs and ILELs are largely defined by the anion component. Despite the key role of the anion there are few reviews that have sections dedicated to this aspect. This review surveys the physicochemical, transport and structural properties of ILs (mainly pyrrolidinium salts) and ILELs employing prominent and representative anion classes.

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Section: Anion Types and Their Propertiessupporting

confidence: 69%

Electrolytes for Lithium (Sodium) Batteries Based on Ionic Liquids: Highlighting the Key Role Played by the Anion

Rüther

Bhatt

Best

et al. 2020

Batteries & Supercaps

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“…The typical configuration of aprotic Li–S battery is assembled using Li metal anode and porous cathode for hosting the S. A separator is configured between the two electrodes in which aprotic electrolyte is introduced ( Figure 1 a). [ 14,15 ] During the discharge process, Li anode undergoes oxidization to form Li + which migrate from anode to cathode through the electrolyte. At cathode side, Li + reacts with S to form Li 2 S via receiving electrons from the outer electrical circuit.…”

Section: Fundamental Of Li–s Batterymentioning

confidence: 99%

Optimizing Redox Reactions in Aprotic Lithium–Sulfur Batteries

Zhou

Lei

et al. 2020

Advanced Energy Materials

119

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The lithium–sulfur battery is regarded as one of the promising energy‐storage devices beyond lithium‐ion battery due to its overwhelming energy density. The aprotic Li–S electrochemistry is hampered by issues arising from the complex solid–liquid–solid conversion process. Recently, tremendous efforts have been made to optimize the electrochemical reaction in Li–S batteries through rationally designing compositions and structures of cathodes. However, a deep and comprehensive understanding of the actual mechanisms of Li–S batteries and their impact on the performance is still insufficient. The vigorous development of various electrochemical analysis and in situ techniques establish a bridge between the microstructure of components and the macroscopic electrochemical performance, thus providing more scientific guidance for the optimal design of Li–S batteries. In this review, based on insights into the mechanism of aprotic Li–S electrochemistry with the aid of in situ characterization and electrochemical methods, the advanced innovations in optimizing Li–S batteries are systematically summarized, including the materials design, cathode configurations optimization, and electrolyte engineering, with the aim to gain a comprehensive understanding of cathodic redox processes and thus achieve high‐performance Li–S batteries. The current status and possible future directions of the field are accordingly outlined.

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“…Furthermore, the specific capacity attenuation was about 0.04% per cycle at 1 A g −1 within 700 cycles after ten cycles of activation, demonstrating the good cycling stability of ZIF-8-C@PP anode. (Figure 4f) Overall, the unique features of ZIF-8-C@PP may shed a bright future for large-scale energy storage due to its excellent battery performance: [37][38][39][40][41][42][43][44][45][46] first, ZIF-8-C@PP has a high phosphorous content of 30 wt% and nearly no crystalline RP formed on the outer surface attributing to the solution-based phosphorous encapsulation method thus enhancing the utilization of phosphorus and ensuring a large specific capacity for ZIF-8-C@PP; second, the pores in ZIF-8-C hosts physically confined the expansion of phosphorus and incompletely filled pores provided buffer space during volume expansion.…”

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confidence: 99%

Mild‐Temperature Solution‐Assisted Encapsulation of Phosphorus into ZIF‐8 Derived Porous Carbon as Lithium‐Ion Battery Anode

Yan

Zhao

et al. 2020

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The high theoretical capacity of red phosphorus (RP) makes it a promising anode material for lithium‐ion batteries. However, the large volume change of RP during charging/discharging imposes an adverse effect on the cyclability and the rate performance suffers from its low conductivity. Herein, a facile solution‐based strategy is exploited to incorporate phosphorus into the pores of zeolitic imidazole framework (ZIF‐8) derived carbon hosts under a mild temperature. With this method, the blocky RP is etched into the form of polyphosphides anions (PP, mainly P5−) so that it can easily diffuse into the pores of porous carbon hosts. Especially, the indelible crystalline surface phosphorus can be effectively avoided, which usually generates in the conventional vapor‐condensation encapsulation method. Moreover, highly‐conductive ZIF‐8 derived carbon hosts with any pore smaller than 3 nm are efficient for loading PP and these pores can alleviate the volume change well. Finally, the composite of phosphorus encapsulated into ZIF‐8 derived porous carbon exhibits a significantly improved electrochemical performance as lithium‐ion battery anode with a high capacity of 786 mAh g−1 after 100 cycles at 0.1 A g−1, a good stability within 700 cycles at 1 A g−1, and an excellent rate performance.

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A compact inorganic layer for robust anode protection in lithium‐sulfur batteries

Cited by 204 publications

References 68 publications

Electrolytes for Lithium (Sodium) Batteries Based on Ionic Liquids: Highlighting the Key Role Played by the Anion

Electrolytes for Lithium (Sodium) Batteries Based on Ionic Liquids: Highlighting the Key Role Played by the Anion

Optimizing Redox Reactions in Aprotic Lithium–Sulfur Batteries

Mild‐Temperature Solution‐Assisted Encapsulation of Phosphorus into ZIF‐8 Derived Porous Carbon as Lithium‐Ion Battery Anode

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