Polydopamine sacrificial layer mediated SiO<sub>x</sub>/C@C yolk@shell structure for durable lithium storage

Zhang, Yuanyuan; Hu, Guangwu; Yu, Qiang; Liu, Zhenhui; Chang, Yu Chung; Wu, Longsheng; Zhou, Liang; Mai, Liqiang

doi:10.1039/d0qm00120a

Cited by 57 publications

(33 citation statements)

References 46 publications

(51 reference statements)

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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

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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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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

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“…Figure 5a and Figure S6–S8 displayed the initial three cyclic voltammetry (CV) curves of the SiOx/C(50), SiOx/C(0), SiOx/C(29) and SiOx/C(71) at a scanning rate of 0.1 mV ⋅ s −1 over the potential range of 0.01–3.00 V. SiOx/C(0), SiOx/C(29), SiOx/C(50) and SiOx/C(71) exhibit a similar voltammogram, demonstrating the same lithiation/delithiation process of the four samples. The initial cathodic scan displays a small peak at around 1.20 V, which can be attributed to the formation of an SEI film and formation of lithium silicates, Si, and Li 2 O from SiOx [11c] . The sharp cathodic peak at around 0.01 V is associated with the alloying between Si and Li [17] .…”

Section: Resultsmentioning

confidence: 97%

Carbon Uniformly Distributed SiOx/C Composite with Excellent Structure Stability for High Performance Lithium‐Ion Batteries

Gao

Peng

Guan

2022

Chemistry An Asian Journal

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“…2c) can be divided into three peaks, locating at 284.9, 286.2, and 289.4 eV, corresponding to C-C/C]C, C-N/C-O, and C]O bonds, respectively. 51,52 Fig. 2d presents the high resolution N 1s spectrum.…”

Section: Resultsmentioning

confidence: 99%

Micron-sized SiO_x/N-doped carbon composite spheres fabricated with biomass chitosan for high-performance lithium-ion battery anodes

et al. 2020

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Polydopamine sacrificial layer mediated SiO_x/C@C yolk@shell structure for durable lithium storage

Abstract: Yolk@shell structured SiOx/C@C has been constructed through a polydopamine sacrificial layer mediated strategy, and the SiOx/C@C displays high specific capacity and durable cyclability in lithium storage.

Cited by 57 publications

References 46 publications

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

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

Carbon Uniformly Distributed SiOx/C Composite with Excellent Structure Stability for High Performance Lithium‐Ion Batteries

Micron-sized SiO_x/N-doped carbon composite spheres fabricated with biomass chitosan for high-performance lithium-ion battery anodes

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Polydopamine sacrificial layer mediated SiOx/C@C yolk@shell structure for durable lithium storage

Abstract: Yolk@shell structured SiOx/C@C has been constructed through a polydopamine sacrificial layer mediated strategy, and the SiOx/C@C displays high specific capacity and durable cyclability in lithium storage.

Cited by 57 publications

References 46 publications

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

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

Carbon Uniformly Distributed SiOx/C Composite with Excellent Structure Stability for High Performance Lithium‐Ion Batteries

Micron-sized SiOx/N-doped carbon composite spheres fabricated with biomass chitosan for high-performance lithium-ion battery anodes

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Polydopamine sacrificial layer mediated SiO_x/C@C yolk@shell structure for durable lithium storage

Micron-sized SiO_x/N-doped carbon composite spheres fabricated with biomass chitosan for high-performance lithium-ion battery anodes