N-doped C-encapsulated scale-like yolk-shell frame assembled by expanded planes few-layer MoSe2 for enhanced performance in sodium-ion batteries

Liu, Hui; Liu, Beihong; Guo, Hong; Liang, Mengfang; Zhang, Yuhao; Borjigin, Timur; Yang, Xiaofei; Wang, Lin; Sun, Xueliang

doi:10.1016/j.nanoen.2018.07.021

Cited by 112 publications

(70 citation statements)

References 41 publications

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“…To illuminate the effect of glucose addition on diffraction intensity of composite, the XRD patterns of S‐2 and SnO 2 @CNTs are compared as reference. As shown in Figure S1, we can see that the diffraction peak intensity of S‐2 is lower than that of SnO 2 @CNTs, indicating that the outer carbon layer generated from glucose reduces the diffraction intensity of SnO 2 @CNTs, as reported in some similar works . Moreover, diffraction peaks of S‐2 and SnO 2 @CNTs between 20∼40° (2‐theta degree) are obviously different.…”

Section: Resultssupporting

confidence: 56%

“…As shown in Figure S1, we can see that the diffraction peak intensity of S-2 is lower than that of SnO 2 @CNTs, indicating that the outer carbon layer generated from glucose reduces the diffraction intensity of SnO 2 @CNTs, as reported in some similar works. [46] Moreover, diffraction peaks of S-2 and SnO 2 @CNTs between 20~40°(2theta degree) are obviously different. The S-2 appears distinct swell when compared to SnO 2 @CNTs in Figure S1, which confirms the amorphous nature of outer carbon layer.…”

Section: Introductionmentioning

confidence: 99%

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Rational Design of Core‐Shell Structured C@SnO₂@CNTs Composite with Enhanced Lithium Storage Performance

et al. 2020

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SnO2 is considered to be a potential anode material in lithium‐ion batteries (LIBs) owing to its high specific capacity of 1494 mAh g−1. Herein, we reported the unique core‐shell structured C@SnO2@CNTs composite with controllable outer carbon thickness, which was synthesized by a simple hydrothermal method and subsequent annealing process. Results show that the C@SnO2@CNTs with outer carbon layer around 1.8 nm displays high reversible capacity and long‐term cycling performance. It maintains a capacity of 850 mAh g−1 should be at current density of 200 mA g−1 up to 100 cycles. Further analysis found that the C@SnO2@CNTs composite exhibits excellent structural stability even after 100 cycles, which contributes to provide a highway for charge transmission. These results give rise to superior electrochemical performance of C@SnO2@CNTs composite and provide new insight for design metal oxide composite anode materials in LIBs field.

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Section: Resultssupporting

confidence: 56%

Section: Introductionmentioning

confidence: 99%

Rational Design of Core‐Shell Structured C@SnO₂@CNTs Composite with Enhanced Lithium Storage Performance

et al. 2020

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“…However, the weak van der Waals interaction between adjacent Se‐Mo‐Se layers, high surface energy of 2D layers, and inherently low electronic conductivity of bulk MoSe 2 give rise to aggregation of MoSe 2 layers easily and immense volume expansion/contraction, which makes it difficult to function as SIB/PIB electrode materials with satisfactory performance . To ameliorate these drawbacks, various strategies have been attempted, including construction of MoSe 2 with carbon composites, fabricating novel MoSe 2 nanostructures, and rational design of few‐layer MoSe 2 . For instance, MoSe 2 @hollow carbon nanosphere (HCNS) composites assembled with few‐layer MoSe 2 nanosheets confined within HCNS were successfully fabricated by a facile strategy reported by Sun et al., and these composites delivered a high capacity of 502 mAh g −1 at 1 A g −1 for SIBs .…”

Section: Introductionmentioning

confidence: 99%

“…Guo's group fabricated a core–shell nanostructured hybrid (pistachio‐shuck‐like MoSe 2 /C) with an enlarged interlayer spacing of 0.85 nm, and it presented a high capacity of 322 mAh g −1 at 0.2 A g −1 for PIBs . Moreover, previous research has elucidated that few‐layered MoSe 2 could promote the reaction kinetics of Na + /K + , improving the rate performance . Even though these results demonstrated that the sodium/potassium storage properties can be improved, it is still highly desirable to explore facile, scalable, and effective strategies to further fabricate the MoSe 2 ‐based materials with fascinating cycling stability and high rate capacity for SIBs/PIBs.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Ultra‐Small Few‐Layer Nanostructured MoSe₂ Embedded on N, P Co‐Doped Bio‐Carbon for High‐Performance Half/Full Sodium‐Ion and Potassium‐Ion Batteries

Ling

Kang

Luo

et al. 2019

Chemistry A European J

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Sodium/potassium‐ion batteries (SIBs/PIBs) arouse intensive interest on account of the natural abundance of sodium/potassium resources, the competitive cost and appropriate redox potential. Nevertheless, the huge challenge for SIBs/PIBs lies in the scarcity of an anode material with high capacity and stable structure, which are capable of accommodating large‐size ions during cycling. Furthermore, using sustainable natural biomass to fabricate electrodes for energy storage applications is a hot topic. Herein, an ultra‐small few‐layer nanostructured MoSe2 embedded on N, P co‐doped bio‐carbon is reported, which is synthesized by using chlorella as the adsorbent and precursor. As a consequence, the MoSe2/NP‐C‐2 composite represents exceedingly impressive electrochemical performance for both sodium‐ion batteries (SIBs) and potassium‐ion batteries (PIBs). It displays a promising reversible capacity (523 mAh g−1 at 100 mA g−1 after 100 cycles) and impressive long‐term cycling performance (192 mAh g−1 at 5 A g−1 even after 1000 cycles) in SIBs, which are some of the best properties of MoSe2‐based anode materials for SIBs to date. To further probe the great potential applications, full SIBs pairing the MoSe2/NP‐C‐2 composite anode with a Na3V2(PO4)3 cathode also exhibits a satisfactory capacity of 215 mAh g−1 at 500 mA g−1 after 100 cycles. Moreover, it also delivers a decent reversible capacity of 131 mAh g−1 at 1 A g−1 even after 250 cycles for PIBs.

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“…Figure 2d shows that rGO@ReS 2 @N-C and rGO@ReS 2 Adv. [41][42][43] The N 1s fine spectrum exhibits three states of: pyridinic N, pyrrolic N, and quaternary N. These are located at 398.2, 399.8, and 400.9 eV, respectively ( Figure S6a, Supporting Information). 2019, 9,1901146 have the same elements except for N. The N-doped nature of the carbon coating-layer is significantly beneficial to electrolyte wettability and electron transport.…”

mentioning

confidence: 99%

1T′‐ReS₂ Confined in 2D‐Honeycombed Carbon Nanosheets as New Anode Materials for High‐Performance Sodium‐Ion Batteries

Chen

Liu

et al. 2019

Advanced Energy Materials

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a viable alternative to more widespread lithium-ion batteries (LIBs). This is because of low cost and ready availability of sodium. [4][5][6] However, the larger ionic radius of Na + (1.02 vs Li + 0.76 Å) leads to sluggish electrochemical kinetics, larger volume change, and unsatisfactory reversibility. Consequently, graphite, the commercial anode material of LIBs, cannot be directly used in SIBs because of suppressed electrochemical kinetics. [7,8] The development of an earth-abundant and low-cost anode material remains a significant research challenge to the fabrication of high-performance SIBs.Recently, transition metal dichalcogenides (TMDs) have attracted attention as potential anode materials for SIBs due to their unique physical and chemical properties. [9][10][11] MoS 2 , a typical TMD, has been widely investigated because of its layered structure with large interlayerspacing (6.15 Å) that is beneficial to insertion/extraction of Na + . [12][13][14] However, conductivity and Na + diffusion is restricted by its semi-conducting 2H-phase and relatively large van der Waals interaction between adjacent layers. This results in poor electrochemical performance. 1T-MoS 2 with metallic conductivity and interlayer-expanded MoS 2 with reduced van der Waals interaction, have therefore been extensively studied. [15][16][17][18] However the fabrication of a stable 1T-MoS 2 together with extremely weak interlayer coupling via a facile and low-cost method has not been reported.Inspiringly, ReS 2 (rhenium disulfide) is a new TMD known to exhibit both distorted 1T (1T′) phase and extremely weak interlayer van der Waals interaction. [19][20][21][22][23] This makes it highly suitable for application to LIBs and SIBs. [24][25][26] The theoretical capacity of ReS 2 is 428 mAh g −1 . This value is based on the conversion reaction between one atom of ReS 2 and four of Li + or Na + . Despite these intrinsic structural advantages, a drawback is that, ReS 2 nanosheets suffer from irreversible structural change on deep charge-discharge processing. Additionally, it is reported that the direction of the largest volume expansion is along the out-of-plane. [27,28] This significantly impedes electrochemical performance of anisotropic ReS 2 anode materials in SIBs. To the best of our knowledge, only limited research has been undertaken to address this, including preparation of ReS 2 (rhenium disulfide) is a new transition-metal dichalcogenide that exhibits 1T′ phase and extremely weak interlayer van der Waals interactions. This makes it promising as an anode material for sodium-ion batteries. However, achieving both a high-rate capability and a long-life has remained a major research challenge. Here, a new composite is reported, in which both are realized for the first time. 1T′-ReS 2 is confined through strong interfacial interaction in a 2D-honeycombed carbon nanosheets that comprise an rGO inter-layer and a N-doped carbon coating-layer (rGO@ReS 2 @N-C). The strong interfacial interaction between carbon and ReS 2 increases overallconduc...

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N-doped C-encapsulated scale-like yolk-shell frame assembled by expanded planes few-layer MoSe2 for enhanced performance in sodium-ion batteries

Cited by 112 publications

References 41 publications

Rational Design of Core‐Shell Structured C@SnO₂@CNTs Composite with Enhanced Lithium Storage Performance

Rational Design of Core‐Shell Structured C@SnO₂@CNTs Composite with Enhanced Lithium Storage Performance

Facile Synthesis of Ultra‐Small Few‐Layer Nanostructured MoSe₂ Embedded on N, P Co‐Doped Bio‐Carbon for High‐Performance Half/Full Sodium‐Ion and Potassium‐Ion Batteries

1T′‐ReS₂ Confined in 2D‐Honeycombed Carbon Nanosheets as New Anode Materials for High‐Performance Sodium‐Ion Batteries

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N-doped C-encapsulated scale-like yolk-shell frame assembled by expanded planes few-layer MoSe2 for enhanced performance in sodium-ion batteries

Cited by 112 publications

References 41 publications

Rational Design of Core‐Shell Structured C@SnO2@CNTs Composite with Enhanced Lithium Storage Performance

Rational Design of Core‐Shell Structured C@SnO2@CNTs Composite with Enhanced Lithium Storage Performance

Facile Synthesis of Ultra‐Small Few‐Layer Nanostructured MoSe2 Embedded on N, P Co‐Doped Bio‐Carbon for High‐Performance Half/Full Sodium‐Ion and Potassium‐Ion Batteries

1T′‐ReS2 Confined in 2D‐Honeycombed Carbon Nanosheets as New Anode Materials for High‐Performance Sodium‐Ion Batteries

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Resources

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Rational Design of Core‐Shell Structured C@SnO₂@CNTs Composite with Enhanced Lithium Storage Performance

Rational Design of Core‐Shell Structured C@SnO₂@CNTs Composite with Enhanced Lithium Storage Performance

Facile Synthesis of Ultra‐Small Few‐Layer Nanostructured MoSe₂ Embedded on N, P Co‐Doped Bio‐Carbon for High‐Performance Half/Full Sodium‐Ion and Potassium‐Ion Batteries

1T′‐ReS₂ Confined in 2D‐Honeycombed Carbon Nanosheets as New Anode Materials for High‐Performance Sodium‐Ion Batteries