Unraveling the Impact of Ether and Carbonate Electrolytes on the Solid–Electrolyte Interface and the Electrochemical Performances of ZnSe@C Core–Shell Composites as Anodes of Lithium-Ion Batteries

Ma, Dengke; Zhu, Qiulan; Li, Xintao; Gao, Hongcheng; Wang, Xiufang; Kang, Xiongwu; Tian, Yong

doi:10.1021/acsami.8b21237

Cited by 57 publications

(38 citation statements)

References 55 publications

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“…As shown in Figure S8a–c (Supporting Information), the binding energies of Zn 2p 3/2 , Zn 2p 1/2 , and Te 3d 5/2 are shifted to 1021, 1044.2, and 571.7 eV, respectively, which might be attributed to the conversion of ZnTe to LiZn and Li 2 Te. [ 11,12,47–49 ]…”

Section: Resultsmentioning

confidence: 99%

Rational Design of Core‐Shell ZnTe@N‐Doped Carbon Nanowires for High Gravimetric and Volumetric Alkali Metal Ion Storage

Zhang

Qiu

Zheng

et al. 2020

Adv Funct Materials

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Among the various semiconductor materials, zinc telluride possesses the lowest electron affinity and ultrafast charge separation capability, facilitating improved charge transfer kinetics. In addition, ZnTe has a relatively high density, contributing to high volumetric capacity. Here, 1D N-doped carbon-coated ZnTe core-shell nanowires (ZnTe@C) are designed and prepared via a facile ion-exchange and carbonization technique. When evaluated as anode for metal ion batteries, it demonstrates superior electrochemical performance in both Li and Na ion storage, including high gravimetric and volumetric capacities (1119 mA h g −1 and 906 mA h cm −3 , respectively, at 100 mA g −1 for Li ion storage), excellent high-rate capability, and long-term cycling stability. This remarkable electrochemical performance is attributed to the low electron affinity and high density of ZnTe, and the amorphous nature of the N-doped carbon layer in the heterostructured ZnTe@C nanowires, which not only provide fast charge transfer paths, but also effectively maintain the structural and electrical integrity of the ZnTe. The strategy of embedding high density and highperformance active materials in highly conductive nanostructures represents an effective way of achieving electrode materials with excellent gravimetric and volumetric capacities towards superior energy storage systems.

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Section: Resultsmentioning

confidence: 99%

Rational Design of Core‐Shell ZnTe@N‐Doped Carbon Nanowires for High Gravimetric and Volumetric Alkali Metal Ion Storage

Zhang

Qiu

Zheng

et al. 2020

Adv Funct Materials

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“…[ 38,39 ] The doping of nitrogen into the carbon matrix not only offers sufficient electrons to the p‐conjugated system to enhance the electrical conductivity but also enhances the coupling strength between ZnSe and the carbon matrix. [ 40–42 ]…”

Section: Resultsmentioning

confidence: 99%

Willow‐Leaf‐Like ZnSe@N‐Doped Carbon Nanoarchitecture as a Stable and High‐Performance Anode Material for Sodium‐Ion and Potassium‐Ion Batteries

Dong

et al. 2020

Small

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cycling life and environmental benignity. However, the scarce (0.0017% in weight) and uneven distribution of lithium in the earth's crust limits the sustainable development of LIBs. [1-4] Therefore, it is necessary to explore alternative energystorage systems with the sufficient resource. Sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs) have the notable advantages due to the abundance of sodium (2.36 wt%) and potassium (2.09 wt%) in the earth's crust. [5-7] Meanwhile, SIBs and PIBs have similar electrochemical principles with that of LIBs. [8-10] Therefore, SIBs and PIBs have recently received considerable attention as the next-generation promising energy storage systems. However, the radii of Na + (1.02 Å) and K + (1.37 Å) are larger than that of Li + (0.76 Å), which can easily cause serious structure damage and sluggish kinetics of electrode material during the repeated Na + /K + intercalation/extraction processes. [11-13] The common anode materials (graphite, metal oxides) for LIBs suffer from low capacity for SIBs and PIBs. [14,15] Thus, it is desirable to fabricate the suitable electrode materials to alleviate the huge volume expansion during the charge/discharge processes. Recently, transition-metal selenides (TMDs, M = Co, Zn, Fe, V, Mo) have attracted significant attention as promising anode materials for SIBs and PIBs owing to their high theoretical capacity, low cost, and fascinating physicochemical properties. [16-20] Among them, zinc selenide (ZnSe) combining the conversion and alloying reactions is considered as a promising anode material owing to its high theoretical specific capacity, suitable discharge/charge platform, and low toxicity. [21,22] Nevertheless, as similar as other TMDs, the performance of ZnSe still suffers from low intrinsic conductivity and dramatic volume variation during the charge-discharge processes, which eventually result in poor cycling stability and rate performance, although obvious progresses have been made up to date. [23,24] To overcome these issues, some promising strategies have been explored to enhance the electrochemical performance. On one hand, incorporation of ZnSe within carbon matrix could improve the electronic conductivity and alleviate huge volume expansion. For example, ZnSe-reduced graphene oxide has been fabricated via a ZnSe is regarded as a promising anode material for energy storage due to its high theoretical capacity and environment friendliness. Nevertheless, it is still a significant challenge to obtain superior electrode materials with stable performance owing to the serious volume change and aggregation upon cycling. Herein, a willow-leaf-like nitrogen-doped carbon-coated ZnSe (ZnSe@NC) composite synthesized through facile solvothermal and subsequent selenization process is beneficial to expose more active sites and facilitate the fast electron/ion transmission. These merits significantly enhance the electrochemical performances of ZnSe@NC for sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs). The obtained ZnSe@NC exhib...

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“…6a, there is a weak reduction peak at 1.5 V and a sharp reduction peak at 0.35 V in the first discharge process of ZnSe/NC composites. According to previous reports [11, 29], the reduction peak at 1.5 V is caused by the formation of SEI film on the surface of active materials. The reduction peak at 0.35 V indicates that lithium ion is embedded in the crystal structure of ZnSe, ZnSe is reduced to form Zn and Li 2 Se, and Zn and Li-ion are alloyed to form Li x Zn alloy phase.…”

Section: Resultsmentioning

confidence: 67%

“…Lately, transition metal selenides (TMS) have been intensively investigated as anode materials for LIBs to substitute graphite due to their energy density and good cycling performance [5], such as SnSe [6], CoSe [7], Sb 2 Se 3 [8], MoSe 2 [9], and FeSe [10]. Among these potential anode materials, zinc selenide (ZnSe) has attracted extensive interest owing to its high theoretical capacity, low cost, and unique electrochemical reaction mechanism [11]. However, ZnSe usually suffers from a large irreversible capacity and poor cycling stability due to a large volume expansion/contraction during Li-ion insertion and extraction process, which results in electrode pulverization and loss of interparticle contact [12, 13].…”

Section: Introductionmentioning

confidence: 99%

MOF-Derived ZnSe/N-Doped Carbon Composites for Lithium-Ion Batteries with Enhanced Capacity and Cycling Life

Liu

Zhang

et al. 2019

Nanoscale Res Lett

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In this work, three different morphologies of ZnSe/N-doped carbon (NC) composites are synthesized using ZIF-8 by a facile calcination process. By adjusting the particle size of precursor ZIF-8, the morphology and size of the product ZnSe/NC can be controlled. The as-prepared ZnSe/NC composites show excellent cyclic stability and rate capability as anode materials in lithium-ion batteries (LIBs). Especially, the as-obtained ZnSe/NC-300 exhibits reversible discharge capacity of 724.4 mAh g −1 after 500 cycles at 1 A g −1 . The introduction of N-doped carbon can significantly improve the conductivity of ZnSe and promotes the transfer of electrons. And mesoporous structure is conducive to the penetration of electrolyte in active materials, increases the contact area, and alleviates the volume expansion during the charge-discharge process. Thus, ZnSe/NC composites provide a new insight into the development of anode materials for next-generation high-performance LIBs. Electronic supplementary material The online version of this article (10.1186/s11671-019-3055-2) contains supplementary material, which is available to authorized users.

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Unraveling the Impact of Ether and Carbonate Electrolytes on the Solid–Electrolyte Interface and the Electrochemical Performances of ZnSe@C Core–Shell Composites as Anodes of Lithium-Ion Batteries

Cited by 57 publications

References 55 publications

Rational Design of Core‐Shell ZnTe@N‐Doped Carbon Nanowires for High Gravimetric and Volumetric Alkali Metal Ion Storage

Rational Design of Core‐Shell ZnTe@N‐Doped Carbon Nanowires for High Gravimetric and Volumetric Alkali Metal Ion Storage

Willow‐Leaf‐Like ZnSe@N‐Doped Carbon Nanoarchitecture as a Stable and High‐Performance Anode Material for Sodium‐Ion and Potassium‐Ion Batteries

MOF-Derived ZnSe/N-Doped Carbon Composites for Lithium-Ion Batteries with Enhanced Capacity and Cycling Life

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