Multi-functional CoS2-N-C porous carbon composite derived from metal-organic frameworks for high performance lithium-sulfur batteries

Luo, Shiqiang; Zheng, Chunman; Sun, Weiwei; Wang, Yiqi; Ke, Jianhuang; Guo, Qingpeng; Liu, Shuangke; Hong, Xiaobin; Li, Yujie; Xie, Wei

doi:10.1016/j.electacta.2018.09.048

Cited by 67 publications

(26 citation statements)

References 53 publications

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“…Moreover, the cathodic peaks of Si/G cathode show higher onset potentials (Figure 5c) comparing with those of pure‐G cathode, further verifying the better kinetics of polysulfides. As demonstrated in Figure S16, Supporting Information, it is evident that the CV profiles of Si/G cathode are more stable than the pure‐G counterpart, indicating enhanced cycling reversibility of electrochemical reaction and continuous suppression of electrochemical polarization 54. Electrochemical impedance spectra (EIS) were also tested to reveal the charge‐transfer capability across the electrode–electrolyte interface.…”

Section: Resultsmentioning

confidence: 99%

Highly Stable Lithium−Sulfur Batteries Promised by Siloxene: An Effective Cathode Material to Regulate the Adsorption and Conversion of Polysulfides

Wang

Zhou

Huang

et al. 2020

Adv Funct Materials

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Designing an appropriate cathode is still a challenge for lithium–sulfur batteries (LSBs) to overcome the polysulfides shuttling and sluggish redox reactions. Herein, 2D siloxene nanosheets are developed by a rational wet‐chemistry exfoliation approach, from which S@siloxene@graphene (Si/G) hybrids are constructed as cathodes in Li‐S cells. The siloxene possesses corrugated 2D Si backbone with abundant O grafted in Si6 rings and hydroxyl‐functionalized surface, which can effectively intercept polysulfides via synergistic effects of chemical trapping capability and kinetically enhanced polysulfides conversion. Theoretical analysis further reveals that siloxene can significantly elevate the adsorption energies and lower energy barrier for Li+ diffusion. The LSBs assembled with 2D Si/G hybrid cathodes exhibit greatly enhanced rate performance (919, 759, and 646 mAh g−1 at 4 C with sulfur loading of 1, 2.9, and 4.2 mg cm−2, respectively) and superb durability (demonstrated by 1000 cycles with an initial capacity of 951 mAh g−1 and negligible 0.032% decay rate at 1 C with sulfur loading of 4.2 mg cm−2). It is expected that the study presented here may open up a new vision toward developing high‐performance LSBs with siloxene for practical applications.

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Section: Resultsmentioning

confidence: 99%

Highly Stable Lithium−Sulfur Batteries Promised by Siloxene: An Effective Cathode Material to Regulate the Adsorption and Conversion of Polysulfides

Wang

Zhou

Huang

et al. 2020

Adv Funct Materials

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“…Other ZIF‐derived CoS x /carbon frameworks have also demonstrated good performance in trapping sulfur species. [ 60,150–154 ]…”

Section: Zifs and Their Derivatives To Improve Chalcogen Cathode Utilization In Li–chalcogen Batteriesmentioning

confidence: 99%

“…Other ZIF-derived CoS x /carbon frameworks have also demonstrated good performance in trapping sulfur species. [60,[150][151][152][153][154] Metal phosphide/carbon frameworks are typically prepared through high-temperature pyrolysis of ZIFs followed by phosphatization. Metal phosphides usually possess relatively high electronic conductivity and high polarity, which is conducive Figure 8.…”

Section: Zif-derived Metal Compound/carbon Composite Hostsmentioning

confidence: 99%

Recent Progress on Zeolitic Imidazolate Frameworks and Their Derivatives in Alkali Metal–Chalcogen Batteries

Chen

et al. 2021

Advanced Energy Materials

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The commercialization of high‐energy‐density alkali metal (Li, Na, and K)–chalcogen (S, Se, and Te) batteries (AMCBs) has been primarily hindered by the volume expansion of chalcogen cathodes during repeated charging/discharging cycles, the shuttling effect of intermediates in the electrolytes, and unstable alkali metal anodes. Owing to their unique structural and physicochemical characteristics, including high specific surface areas, self‐doped N atoms, open pore structure, versatile compositions, and favorable chemical stability, zeolitic imidazolate frameworks (ZIFs) and their derivatives have been widely used in different battery components, such as cathodes, anodes, separators, and interlayers, to resolve these issues simultaneously. This review discusses recent advances in ZIFs and their derivatives for cathode construction, anode protection, and interlayer/separator design in AMCBs. The processing methods, structure and morphology engineering, composition tuning, and electrochemical performance of various ZIFs and their derivatives are systematically examined. More importantly, the remaining challenges and future research directions are summarized and discussed. This review is expected to offer new approaches for the rational design of ZIFs and their derivatives for emerging energy storage devices.

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“…To date, novel polarized sulfur hosts, like metallic compounds [ 100,101 ] and metal sulfides [ 102,103 ] , have been explored in Li–S batteries. Compared with nonpolar carbon materials, these polarized host materials possess strong intrinsic sulfiphilic properties, which could constrain polysulfide dissolution by the strong chemical interactions between the polar host materials and the polysulfides.…”

Section: Cathodes Designmentioning

confidence: 99%

Alkali‐Metal Sulfide as Cathodes toward Safe and High‐Capacity Metal (M = Li, Na, K) Sulfur Batteries

Yang

Zhang

Wang

et al. 2020

Advanced Energy Materials

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In addition, sulfur is abundant on earth, and also very lowcost and environmentally benign. Similarly, the practical development of various alkali-metal-sulfur (M-S, M = Li, Na, and K) batteries has been hindered by a series of issues, which include: i) the polysulfide shuttle effect, which causes low capacity with limited cycle life [9,10] ; ii) the high reactivity of the alkali metal anodes, which presents safety issues, [11-13] and iii) the poor electronic conductivity of the sulfur cathode materials, which leads to low sulfur utilization and poor rate capability. [14,15] To address the above technical challenges for metal-sulfur batteries with sulfur powder-based electrodes, alternative solutions for the architectural design of sulfur electrodes must be pursued. Therefore, the development of discharged sulfur electrodes, indeed alkali-metal sulfide (M 2 S x) cathodes, has become very interesting and imperative. Compared to the mechanical disadvantage of sulfur powder-based cathodes, M 2 S x cathodes do not suffer from volume collapse, since their volume shrinkage during the initial charge process could generate enough space to accommodate the following volume expansion of sulfur during the discharge process, leading to more stable cycling performance for the M-S batteries. [16] In addition, as the metallized sulfur, M 2 S x cathodes have a huge natural advantage, in that they can be coupled with alkali metal-free anodes such as graphite or silicon (Si). Consequently, the fatal shortcircuiting caused by the excessive growth of dendrites on alkali metal anodes could be greatly adverted, creating safer and more stable M-S batteries. [17,18] Besides, the M 2 S x cathodes hold great promise for high energy battery system. For instance, Li 2 S has a high specific capacity of 1166 mA h g −1. [19] When coupled with Si anodes, Li 2 S-based Li-S batteries can deliver a high specific energy, which is four times of the LiCoO 2 /graphite system. [20] Therefore, the M 2 S x cathode-based M-S batteries could be applied as safe, cost-effective, high durable battery technology with comparatively high energy densities. Unfortunately, it is challenging to apply M 2 S x cathodes, which usually show high initial charge potential due to their high electronic resistivity and low ion diffusivity. [20] The low electronic and ionic conductivity of the M 2 S x cathodes also leads to low sulfur utilization and poor rate capability. [21] Moreover, the widely used ether-based electrolytes in M-S batteries could be decomposed at high potential, resulting in Rechargeable alkali-metal-sulfur (M-S) batteries, because of their high energy density and low cost, have been recognized as one of the most promising next-generation energy storage technologies. Nevertheless, the dissolution of metal polysulfides in organic liquid electrolytes and safety issues related to the metal anodes are greatly hindering the development of the M-S batteries. Alkali-metal sulfides (M 2 S x) are emerging as cathode materials, which can pair with various safe nonalk...

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Multi-functional CoS2-N-C porous carbon composite derived from metal-organic frameworks for high performance lithium-sulfur batteries

Cited by 67 publications

References 53 publications

Highly Stable Lithium−Sulfur Batteries Promised by Siloxene: An Effective Cathode Material to Regulate the Adsorption and Conversion of Polysulfides

Highly Stable Lithium−Sulfur Batteries Promised by Siloxene: An Effective Cathode Material to Regulate the Adsorption and Conversion of Polysulfides

Recent Progress on Zeolitic Imidazolate Frameworks and Their Derivatives in Alkali Metal–Chalcogen Batteries

Alkali‐Metal Sulfide as Cathodes toward Safe and High‐Capacity Metal (M = Li, Na, K) Sulfur Batteries

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