Bidirectional catalyst design for lithium–sulfur batteries: phase regulation cooperates with N-doping

Liang, Xinqi; Cai, Jinyan; Qiu, Saisai; Niu, Shuwen; Liu, Yulong; Wang, Xi; Wang, Gongming; Chen, Zhe; Chen, Minghua

doi:10.1039/d2ta06793e

Cited by 10 publications

(5 citation statements)

References 36 publications

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“…Chen et al used N-doped ultrathin molybdenum disulfide nanosheets anchored on multi-walled carbon nanotubes (N-MoS 2 @CNTs) as an efficient bi-directional catalyst to rapidly convert S species under moderate conditions through a fast and highly active NH 3 plasma technology. [162] Yang et al prepared delaminated Mo 2 CTx nanosheets by chemical etching and used them as sulfur hosts to encapsulate sulfur spheres (S@Mo 2 CTx). Mo 2 CTx can gradually catalyze the redox reaction of LiPSs and accelerate the nucleation and deposition of Li 2 S on the large surface.…”

Section: Heterostructuresmentioning

confidence: 99%

Rational Design of High‐Loading Electrodes with Superior Performances Toward Practical Application for Energy Storage Devices

Tang,

Wei,

Jia

et al. 2023

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High‐loading electrodes play a crucial role in designing practical high‐energy batteries as they reduce the proportion of non‐active materials, such as current separators, collectors, and battery packaging components. This design approach not only enhances battery performance but also facilitates faster processing and assembly, ultimately leading to reduced production costs. Despite the existing strategies to improve rechargeable battery performance, which mainly focus on novel electrode materials and high‐performance electrolyte, most reported high electrochemical performances are achieved with low loading of active materials (<2 mg cm−2). Such low loading, however, fails to meet application requirements. Moreover, when attempting to scale up the loading of active materials, significant challenges are identified, including sluggish ion diffusion and electron conduction kinetics, volume expansion, high reaction barriers, and limitations associated with conventional electrode preparation processes. Unfortunately, these issues are often overlooked. In this review, the mechanisms responsible for the decay in the electrochemical performance of high‐loading electrodes are thoroughly discussed. Additionally, efficient solutions, such as doping and structural design, are summarized to address these challenges. Drawing from the current achievements, this review proposes future directions for development and identifies technological challenges that must be tackled to facilitate the commercialization of high‐energy‐density rechargeable batteries.

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Section: Heterostructuresmentioning

confidence: 99%

Rational Design of High‐Loading Electrodes with Superior Performances Toward Practical Application for Energy Storage Devices

Tang,

Wei,

Jia

et al. 2023

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“…Simultaneously, the presence of two distinct oxidation peaks is associated with the transition from solid Li 2 S 2 /Li 2 S to LiPSs, and further to S 8 . 31 The two distinct pairs of redox peaks observed in the WO 2.83 -WN/CC-and WN/CC-based cells indicate the rapid conversion between Li 2 S and LiPSs. Importantly, the symmetric cell with a WO 2.83 -WN/CC interlayer displays a significantly reduced peak separation (ca.…”

Section: Resultsmentioning

confidence: 94%

“…The reduction peaks represent S 8 to Li 2 S 8 reduction and LiPSs to Li 2 S 2 /Li 2 S conversion, respectively. Simultaneously, the presence of two distinct oxidation peaks is associated with the transition from solid Li 2 S 2 /Li 2 S to LiPSs, and further to S 8 . The two distinct pairs of redox peaks observed in the WO 2.83 -WN/CC- and WN/CC-based cells indicate the rapid conversion between Li 2 S and LiPSs.…”

Section: Resultsmentioning

confidence: 99%

Design of WO_2.83-WN Heterostructure Bidirectional Catalyst for High-Performance Lithium–Sulfur Batteries

Wang,

Chen,

Qiu

et al. 2023

ACS Appl. Energy Mater.

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The lithium−sulfur (Li−S) batteries are regarded as a promising candidate for next-generation energy storage devices owing to their high theoretical specific capacity and energy density. Nonetheless, the "shuttle effect" induced by lithium polysulfides (LiPSs) migrating between cathode and anode can result in capacity degradation. To address this issue, a catalyst has been introduced into Li−S batteries to effectively inhibit the "shuttle effect". A bidirectional catalyst with both high adsorption ability and catalytic activity is required to achieve fast transformation of LiPSs. In this context, a heterostructure design of WO 2.83 -WN is proposed, which has both high adsorptive capacity and excellent catalytic properties for smooth capture-diffusion-conversion of LiPSs. The WO 2.83 -WN/CC heterostructured electrode demonstrates exceptional electrochemical performance owing to the synergistic effect between its components. It delivers an initial discharge capacity of 1510 mA h g −1 at a low current density of 0.1 C. Impressively, after 400 cycles at a high rate of 1 C, it retains a discharge capacity of 943 mA h g −1 with a negligible capacity decay rate of only 0.021% per cycle. Excellent cycle stability is also achieved at high sulfur loading.

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“…By comparing the Mo 3d spectra of CoS 2 -NC-CNTs@MoS 2 and MoS 2 @CNTs, it can be seen that the content of 1T-MoS 2 increases, and the peak intensity of Mo 6+ decreases, indicating 2H/1T phase conversion. 54 The Mo–S binding energy of the MoS 2 @CNTs is negatively shifted by 0.2 eV as compared with CoS 2 -NC-CNTs@MoS 2 . Fig.…”

Section: Resultsmentioning

confidence: 95%

Exquisitely constructing hierarchical carbon nanoarchitectures decorated with sulfides for high-performance Li–S batteries

Deng,

Lv,

Zhao

et al. 2024

Dalton Trans.

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Bidirectional catalyst design for lithium–sulfur batteries: phase regulation cooperates with N-doping

Abstract: Accelerating the reaction kinetics of S species is considered the key to further improving the performance of lithium-sulfur (Li-S) batteries. However, current research on efficient catalysts for S species is...

Cited by 10 publications

References 36 publications

Rational Design of High‐Loading Electrodes with Superior Performances Toward Practical Application for Energy Storage Devices

Rational Design of High‐Loading Electrodes with Superior Performances Toward Practical Application for Energy Storage Devices

Design of WO_2.83-WN Heterostructure Bidirectional Catalyst for High-Performance Lithium–Sulfur Batteries

Exquisitely constructing hierarchical carbon nanoarchitectures decorated with sulfides for high-performance Li–S batteries

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Bidirectional catalyst design for lithium–sulfur batteries: phase regulation cooperates with N-doping

Abstract: Accelerating the reaction kinetics of S species is considered the key to further improving the performance of lithium-sulfur (Li-S) batteries. However, current research on efficient catalysts for S species is...

Cited by 10 publications

References 36 publications

Rational Design of High‐Loading Electrodes with Superior Performances Toward Practical Application for Energy Storage Devices

Rational Design of High‐Loading Electrodes with Superior Performances Toward Practical Application for Energy Storage Devices

Design of WO2.83-WN Heterostructure Bidirectional Catalyst for High-Performance Lithium–Sulfur Batteries

Exquisitely constructing hierarchical carbon nanoarchitectures decorated with sulfides for high-performance Li–S batteries

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Design of WO_2.83-WN Heterostructure Bidirectional Catalyst for High-Performance Lithium–Sulfur Batteries