In-situ topochemical nitridation derivative MoO2–Mo2N binary nanobelts as multifunctional interlayer for fast-kinetic Li-Sulfur batteries

Yang, Jin‐Lin; Zhao, Shunzheng; Lu, Yiming; Zeng, Xiang‐Tian; Lv, Wei; Cao, Guozhong

doi:10.1016/j.nanoen.2019.104356

Cited by 121 publications

(103 citation statements)

References 68 publications

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“…[31,34] Ther ich O-and C-based bonds in Mo-PDAd on ot completely disappear during ammonification, therefore leaving some minor signals for Mo 6+ -O,M o-O-N,a nd MoÀCb ondings at 232.6, 230.7, and 228.8 eV for Mo 3d 5/2 respectively. [31,35] However these residual bondings do not cause the crystallite growth of the corresponding non-nitride phases as indicated from the exclusive MoN XRD pattern.…”

Section: àmentioning

confidence: 95%

Sandwich‐like Catalyst–Carbon–Catalyst Trilayer Structure as a Compact 2D Host for Highly Stable Lithium–Sulfur Batteries

Peng

et al. 2020

Angew Chem Int Ed

140

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Herein, we propose the construction of asandwichstructured host filled with continuous 2D catalysis-conduction interfaces.T his MoN-C-MoN trilayer architecture causes the strong conformal adsorption of S/Li 2 S x and its high-efficiency conversion on the two-sided nitride polar surfaces,w hich are supplied with high-flux electron transfer from the buried carbon interlayer.The 3D self-assembly of these 2D sandwich structures further reinforces the interconnection of conductive and catalytic networks.The maximized exposure of adsorptive/ catalytic planes endows the MoN-C@S electrode with excellent cycling stability and high rate performance even under high S loading and lowhost surface area. The high conductivity of this trilayer texture does not compromise the capacity retention after the Sc ontent is increased. Suchajob-synergistic mode between catalytic and conductive functions guarantees the homogeneous deposition of S/Li 2 S x ,a nd avoids thicka nd devitalized accumulation (electrode passivation) even after high-rate and long-term cycling.

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Section: àmentioning

confidence: 95%

Sandwich‐like Catalyst–Carbon–Catalyst Trilayer Structure as a Compact 2D Host for Highly Stable Lithium–Sulfur Batteries

Peng

et al. 2020

Angew Chem Int Ed

140

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“…One step forward, novel MoO 2 –Mo 2 N binary nanobelts were synthesized from α‐MoO 3 through in situ topochemical nitridation process, which not only served as physical barrier for inhibiting the LiPSs shuttling but also regulated the LiPSs conversion at the interface (Figure 9d). [ 174 ] Attributing the synergistic advantages of polar MoO 2 and the conductive Mo 2 N, the cell based on MoO 2 –Mo 2 N‐modified interlayer can obtain discharge capacity of 590 mA h g −1 after 100 cycles at 0.2 C with low fading rate of 0.26% per cycle (Figure 9e).…”

Section: Optimization Strategies Of Redox Reactionmentioning

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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“…Yang et al developed an in situ topotactical nitridation strategy to prepare MoO 2 -Mo 2 N nanobelts that were incorporated as interlayer materials between the cathode and the separator in Li-S batteries ( Figure 13 ) [ 95 ]. DFT calculation disclosed that the binding strength of MoO 2 surfaces to Li 2 S 4 is higher than that of Mo 2 N. The potentiostatic discharge tests of Li-Li 2 S 8 batteries based on MoO 2 -Mo 2 N at 2.08 V exhibited a capacity of ~202 mAh g −1 for Li 2 S precipitation, better than that based on MoO 2 (~103 mAh g −1 ) and Mo 2 N (~118 mAh g −1 ), confirming the accelerated conversion of LiPSs.…”

Section: Molybdenum Nitridesmentioning

confidence: 99%

Recent Advances in Molybdenum-Based Materials for Lithium-Sulfur Batteries

et al. 2021

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Lithium-sulfur (Li-S) batteries as power supply systems possessing a theoretical energy density of as high as 2600 Wh kg−1 are considered promising alternatives toward the currently used lithium-ion batteries (LIBs). However, the insulation characteristic and huge volume change of sulfur, the generation of dissolvable lithium polysulfides (LiPSs) during charge/discharge, and the uncontrollable dendrite formation of Li metal anodes render Li-S batteries serious cycling issues with rapid capacity decay. To address these challenges, extensive efforts are devoted to designing cathode/anode hosts and/or modifying separators by incorporating functional materials with the features of improved conductivity, lithiophilic, physical/chemical capture ability toward LiPSs, and/or efficient catalytic conversion of LiPSs. Among all candidates, molybdenum-based (Mo-based) materials are highly preferred for their tunable crystal structure, adjustable composition, variable valence of Mo centers, and strong interactions with soluble LiPSs. Herein, the latest advances in design and application of Mo-based materials for Li-S batteries are comprehensively reviewed, covering molybdenum oxides, molybdenum dichalcogenides, molybdenum nitrides, molybdenum carbides, molybdenum phosphides, and molybdenum metal. In the end, the existing challenges in this research field are elaborately discussed.

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In-situ topochemical nitridation derivative MoO2–Mo2N binary nanobelts as multifunctional interlayer for fast-kinetic Li-Sulfur batteries

Cited by 121 publications

References 68 publications

Sandwich‐like Catalyst–Carbon–Catalyst Trilayer Structure as a Compact 2D Host for Highly Stable Lithium–Sulfur Batteries

Sandwich‐like Catalyst–Carbon–Catalyst Trilayer Structure as a Compact 2D Host for Highly Stable Lithium–Sulfur Batteries

Optimizing Redox Reactions in Aprotic Lithium–Sulfur Batteries

Recent Advances in Molybdenum-Based Materials for Lithium-Sulfur Batteries

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