The impact of the particle size of a metal–organic framework for sulfur storage in Li–S batteries

Zhou, Junwen; Yu, Xiao-Song; Fan, Xinxin; Wang, Xiaojuan; Li, Haiwei; Zhang, Yuanyuan; Li, Wei; Zheng, Jie; Wang, Bo; Li, Xingguo

doi:10.1039/c5ta00524h

Cited by 136 publications

(80 citation statements)

References 29 publications

(52 reference statements)

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“…Thei mpact of particle sizes was also investigated. Unlike in previous studies using pristine MOFs as electrodes,w here their specific capacities were significantly affected by the particle size, [11] negligible difference in battery performance was observed in this study, when the particle size of ppy-S-in-MOF samples varies from 800 nm to 3 mm( Figure S25). Them icrometer size of ppy-Sin-MOF particles is favorable for scale up and to access higher tap density in the electrode.…”

Section: Introductioncontrasting

confidence: 81%

Metal–Organic Frameworks for High Charge–Discharge Rates in Lithium–Sulfur Batteries

et al. 2018

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We report a new method to promote the conductivities of metal-organic frameworks (MOFs) by 5 to 7 magnitudes, thus their potential in electrochemical applications can be fully revealed. This method combines the polarity and porosity advantages of MOFs with the conductive feature of conductive polymers, in this case, polypyrrole (ppy), to construct ppy-MOF compartments for the confinement of sulfur in Li-S batteries. The performances of these ppy-S-in-MOF electrodes exceed those of their MOF and ppy counterparts, especially at high charge-discharge rates. For the first time, the critical role of ion diffusion to the high rate performance was elucidated by comparing ppy-MOF compartments with different pore geometries. The ppy-S-in-PCN-224 electrode with cross-linked pores and tunnels stood out, with a high capacity of 670 and 440 mAh g at 10.0 C after 200 and 1000 cycles, respectively, representing a new benchmark for long-cycle performance at high rate in Li-S batteries.

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Section: Introductioncontrasting

confidence: 81%

Metal–Organic Frameworks for High Charge–Discharge Rates in Lithium–Sulfur Batteries

et al. 2018

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“…It is worth noting that ZIF‐8 in this work was synthesized with an increased nanocrystal size to achieve the “golden size” of the final carbon hosts. [ 28–29 ] The as‐synthesized ZIF‐8 has a polyhedral morphology with active edges and apex angles (Figure S1, Supporting Information). After carbonization, ZIF‐8‐C was obtained with similar polyhedral morphology yet without obvious size reduction compared to ZIF‐8 (Figure 1b), and the polyhedral morphology of ZIF‐8‐C was further confirmed by transmission electron microscope (TEM), as shown in Figure 1c.…”

Section: Figurementioning

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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“…Detailed preparation methods are given in the ESI † or found in previous publications. 19,20 As shown in Fig. 1, ZIF-8 nanocrystals prepared in an aqueous emulsion (ZIF-8_water) exhibit irregular shape with particle size of 70 AE 13 nm ( Fig.…”

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confidence: 97%

Opposite particle size effects on the adsorption kinetics of ZIF-8 for gaseous and solution adsorbates

et al. 2015

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The impact of the particle size of a metal–organic framework for sulfur storage in Li–S batteries

Abstract: We report for the first time the influence of the particle size of a porous sulfur host on the sulfur utilization and cycling stability of Li–S batteries.

Cited by 136 publications

References 29 publications

Metal–Organic Frameworks for High Charge–Discharge Rates in Lithium–Sulfur Batteries

Metal–Organic Frameworks for High Charge–Discharge Rates in Lithium–Sulfur Batteries

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

Opposite particle size effects on the adsorption kinetics of ZIF-8 for gaseous and solution adsorbates

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