Hollow submicrospheres of trimetallic selenides for high-capacity lithium and sodium ion batteries

Liang, Zhenlin; Yang, Mingzhi; Wang, Shouzhi; Chang, Bin; Tu, Huayao; Shao, Yongliang; Zhang, Baoguo; Zhao, Huihui; Lei, Yong; Shen, Jianxing; Wu, Yongzhong

doi:10.1016/j.cej.2020.126724

Cited by 43 publications

(21 citation statements)

References 59 publications

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“…Here, k 1 v and k 2 v 1/2 (k 1 and k 2 are constants) represent the capacitive contribution and diffusion contribution, respectively. [13,37] The k 1 and k 2 can be determined by the slope and intercept of the v 1/2 vs. i/v 1/2 line, respectively. Therefore, the contribution from capacitive behaviors at 0.6 mV s À 1 of LIBs and SIBs (Figure S13) is calculated to be 68 and 75 %.…”

Section: Resultsmentioning

confidence: 99%

Synergistic Engineering of Defects and Heterostructures Enhance Lithium/Sodium Storage Properties of F‐SnO_2‐x‐SnS_2‐x Nanocrystals Supported on N,S‐Graphene

Yuan

Zhao

Qiu

et al. 2021

Chemistry A European J

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Phase engineering of the electrode materials in terms of designing heterostructures, introducing heteroatom and defects, improves great prospects in accelerating the charge storage kinetics during the repeated Li + /Na + insertion/deintercalation. Herein, a new design of Li/Na-ion battery anodes through phase regulating is reported consisting of Fdoped SnO 2 -SnS 2 heterostructure nanocrystals with oxygen/ sulfur vacancies (V O /V S ) anchored on a 2D sulfur/nitrogendoped reduced graphene oxide matrix (F-SnO 2-x -SnS 2-x @N/S-RGO). Consequently, the F-SnO 2-x -SnS 2-x @N/S-RGO anode demonstrates superb high reversible capacity and long-term cycling stability. Moreover, it exhibits excellent great rate capability with 589 mAh g À 1 for Li + and 296 mAh g À 1 at 5 A g À 1 for Na + . The enhanced Li/Na storage properties of the nanocomposites are not only attributed to the increase in conductivity caused by V O /V S and F doping (confirmed by DFT calculations) to accelerate their charge-transfer kinetics but also the increased interaction between F-SnO 2-x -SnS 2-x and Li/ Na through heterostructure. Meanwhile, the hierarchical F-SnO 2-x -SnS 2-x @N/S-RGO network structure enables fast infiltration of electrolyte and improves electron/ion transportation in the electrode, and the corrosion resistance of F doping contributes to prolonged cycle stability.

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Section: Resultsmentioning

confidence: 99%

Synergistic Engineering of Defects and Heterostructures Enhance Lithium/Sodium Storage Properties of F‐SnO_2‐x‐SnS_2‐x Nanocrystals Supported on N,S‐Graphene

Yuan

Zhao

Qiu

et al. 2021

Chemistry A European J

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“…This splendid conductivity further confirmed that the BCN nanotubes facilitated charge transfer and enhanced electrical conductivity, which are also beneficial to acquiring superior specific capacitance. [52][53][54] As shown in Figure 3d, the CV curves of BCN-4 maintained rectangular shapes as the scan rates increased from 0 to 100 mV s −1 . The CV curves of the other samples are shown in Figure S6 (Supporting Information).…”

Section: Resultsmentioning

confidence: 72%

In Situ Growing BCN Nanotubes on Carbon Fibers for Novel High‐Temperature Supercapacitor with Excellent Cycling Performance

Liang

Shi

et al. 2021

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communication stations of switching 5G signal are inevitable. In that case, supercapacitors that can work at high temperatures must be explored to expand the application range and improve equipment security. However, studies on the development of high-temperature supercapacitors are few because of several challenges, such as: poor cycling stability of the electrode material at high temperature and low boiling point of the electrolyte. [11][12][13] Therefore, supercapacitors operating at high temperatures impose strict requirements on materials and electrolytes.Carbon-based supercapacitors have elicited extensive attention because of their rapid charge/discharge rate, high electrical conductivity, and good thermostability. [14][15][16][17][18][19][20] Extensive effort has been exerted to obtain high-temperature, carbon-based supercapacitors with improved the performance. For example, Yury et al. reported on wide range of temperature supercapacitors based on active carbon (AC). By adjusting the size and shape of AC, the double-layer capacitors could be operated in a wide range of temperature from −100 to 60 °C. [21] Bao et al. reported an all-solid-state planar with activated graphene as the cathode; the planar showed excellent electrochemical performance and safety at 80 °C. [22] However, the cycling stability was unsatisfactory, and the inherent low energy density of pure carbon resulted in a limited application. Motivated by this challenging issue, researchers have conducted studies to improve the electrochemical property. Recent research has shown that the doping of nitrogen (N), boron (B), phosphorus (P), sulfur (S), and fluorine (F) heteroatoms in carbon frame can improve the stability and energy density of carbon materials. [23][24][25][26][27] For example, Feng et al. reported graphene aerogels with N and B doping; the aerogels showed an enhanced energy density of 8.65 W h kg −1 and improved cycling stability close to 100% after 1000 cycles. [28] Our previous work also proved that the introduction of B and N can alter the electrostatic attraction of materials, thereby expanding the operating voltage window to 4.8 V and resulting in a high energy density of 200 Wh kg −1 . [29] Furthermore, the inserted B and N in C lattice structures can effectively improve the charge density and activate the C electron around B and N. [30] Carbon nanomaterials have elicited much research interest in the energy storage field, but most of them cannot be used at high temperatures. Thus, a supercapacitor with high energy and desired stability at high temperatures is urgently required. Herein, BCN nanotubes (BCNNTs) with excellent performance at high temperatures are generated on carbon fibers by optimizing the ratio of B and N. The nanotubes' morphology can effectively alleviate the structural damage caused by the rapid adsorption/ desorption of the electrolyte during long-time charge/discharge cycles at high temperatures, thus improving the high-temperature cycle stability. The symmetric supercapacitors that are assembled with...

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“…The weak peak at 59.25 eV can be assigned to SeO x , indicating the presence of Se-O bonds and suggesting the inevitable surface oxidation of selenide. 19,22 The sodium storage properties of the fabricated selenides are first evaluated via CV using CR2032 half batteries that are assembled using Na foil and the fabricated selenides as electrodes. We first evaluate the performances of phase-pure NiCoSe 2 samples that were fabricated using different approaches.…”

Section: Resultsmentioning

confidence: 99%

“…The high-resolution Co 2p XPS spectrum in Fig.3ccan also be divided into two pairs of peaks, corresponding to Co 2p 3/2 and Co 2p 1/2 , respectively. The peaks at 778.58 and 793.58 eV correspond to Co 3+ from Co-Se bonds, and the peaks at 786.28 and 802.58 eV are satellite peaks 21,22. Meanwhile, the two peaks at 781.48 and 797.48 eV correspond to Co 2 + 2p 3/2 and Co 2 + 2p 1/2 , suggesting the coexistence of Co 2 + and Co 3+ in the composite.…”

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confidence: 98%

The rational design of nickel-cobalt selenides@selenium nanostructures by adjusting the synthesis environment for high-performance sodium-ion batteries

Wang

Pei

Wang

et al. 2022

Inorg. Chem. Front.

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Hollow submicrospheres of trimetallic selenides for high-capacity lithium and sodium ion batteries

Cited by 43 publications

References 59 publications

Synergistic Engineering of Defects and Heterostructures Enhance Lithium/Sodium Storage Properties of F‐SnO_2‐x‐SnS_2‐x Nanocrystals Supported on N,S‐Graphene

Synergistic Engineering of Defects and Heterostructures Enhance Lithium/Sodium Storage Properties of F‐SnO_2‐x‐SnS_2‐x Nanocrystals Supported on N,S‐Graphene

In Situ Growing BCN Nanotubes on Carbon Fibers for Novel High‐Temperature Supercapacitor with Excellent Cycling Performance

The rational design of nickel-cobalt selenides@selenium nanostructures by adjusting the synthesis environment for high-performance sodium-ion batteries

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Hollow submicrospheres of trimetallic selenides for high-capacity lithium and sodium ion batteries

Cited by 43 publications

References 59 publications

Synergistic Engineering of Defects and Heterostructures Enhance Lithium/Sodium Storage Properties of F‐SnO2‐x‐SnS2‐x Nanocrystals Supported on N,S‐Graphene

Synergistic Engineering of Defects and Heterostructures Enhance Lithium/Sodium Storage Properties of F‐SnO2‐x‐SnS2‐x Nanocrystals Supported on N,S‐Graphene

In Situ Growing BCN Nanotubes on Carbon Fibers for Novel High‐Temperature Supercapacitor with Excellent Cycling Performance

The rational design of nickel-cobalt selenides@selenium nanostructures by adjusting the synthesis environment for high-performance sodium-ion batteries

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Synergistic Engineering of Defects and Heterostructures Enhance Lithium/Sodium Storage Properties of F‐SnO_2‐x‐SnS_2‐x Nanocrystals Supported on N,S‐Graphene

Synergistic Engineering of Defects and Heterostructures Enhance Lithium/Sodium Storage Properties of F‐SnO_2‐x‐SnS_2‐x Nanocrystals Supported on N,S‐Graphene