Heterogeneous interface of Se@Sb@C boosting potassium storage

Zhao, Na; Qin, Jian; Chu, Lujia; Wang, Linzhe; Xu, Dan; Wang, Xiujuan; Yang, Huijuan; Zhang, Jiujun; Li, Xi‐Fei

doi:10.1016/j.nanoen.2020.105345

Cited by 57 publications

(32 citation statements)

References 47 publications

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“…[ 51 ] It can be observed that the charge‐transfer resistance of the ZnCoSe@NDC is relatively tiny, proving the fast Na + migration rate. Besides, based on low‐frequency linear fit, the diffusion coefficient of Na + ( D Na+ ) was calculated according to the following equations [ 52 ]

\begin{matrix} ω = 2 π f \end{matrix}

\begin{matrix} Z_{normalw} = R_{normalΩ} + σ_{normalw} ω^{- 1 / 2} \end{matrix}

\begin{matrix} D_{{Na}^{+}} = 0.5 R^{2} T^{2} / S^{2} n^{4} F^{4} C^{2} σ_{normalw}^{2} \end{matrix}

…”

Section: Resultsmentioning

confidence: 99%

Rational Design of Yolk–Shell ZnCoSe@N‐Doped Dual Carbon Architectures as Long‐Life and High‐Rate Anodes for Half/Full Na‐Ion Batteries

Feng

Luo

Yan

et al. 2021

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Transition‐metal selenides (TMSs) have emerged as prospective anode materials for sodium ion batteries (SIBs), owing to their considerable theoretical capacity and intrinsic high electronic conductivity. Whereas, TMSs still suffer from poor rate capability and inferior cycling stability induced by sluggish kinetics and severe volume changes during de/sodiation processes. Herein, a hierarchical composite consisting of a zinc‐cobalt bimetallic selenide yolk and nitrogen‐doped double carbon shell (denoted as ZnCoSe@NDC) is engineered and fabricated successfully. The architecture of the as‐fabricated material improves the Na‐ion storage performance via increasing the electron transfer kinetics, accommodating volume expansion, and mitigating the generation of by‐products. As expected, the ZnCoSe@NDC electrode delivers superior sodium storage performance with long cycling stability (344.5 mAh g−1 at 5.0 A g−1 over 2000 long‐term cycles) and high‐rate performance (319.2 mAh g−1 at 10.0 A g−1). Meanwhile, the NVP@C//ZnCoSe@NDC full SIB cells are constructed successfully, retaining 96.3% of its initial capacity at 0.5A g−1 after 200 loops. The outstanding electrochemical performance and the construction of hybrid SIBs will have far‐reaching influences on the development of the various rechargeable batteries.

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\begin{matrix} ω = 2 π f \end{matrix}

\begin{matrix} Z_{normalw} = R_{normalΩ} + σ_{normalw} ω^{- 1 / 2} \end{matrix}

\begin{matrix} D_{{Na}^{+}} = 0.5 R^{2} T^{2} / S^{2} n^{4} F^{4} C^{2} σ_{normalw}^{2} \end{matrix}

…”

Section: Resultsmentioning

confidence: 99%

Rational Design of Yolk–Shell ZnCoSe@N‐Doped Dual Carbon Architectures as Long‐Life and High‐Rate Anodes for Half/Full Na‐Ion Batteries

Feng

Luo

Yan

et al. 2021

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“…This may be because the porous structure of HPRP-36 can give a fast ion path and structure stability. Meanwhile, the lithium ion diffusion coefficients of the fresh cell of HPRP-36 and Raw RP are calculated according to the following equation − in which R is the gas constant, T is the room temperature, A is the surface area of the electrode, n is the number of electrons per reaction species, F is the Faraday constant, C is the concentration of Li + in the electrode materials, and σ is Warburg factor and can be obtained from the line of Z im ∼ ω –1/2 (Figure S8B). Through calculation, Li + diffusion coefficient of the HPRP-36 electrode is 3.94 times higher than that of the Raw RP electrode, which can be attributed to the fast ion path and structural stability caused by the porous structure of HPRP-36.…”

Section: Results and Discussionmentioning

confidence: 99%

Green, Template-Less Synthesis of Honeycomb-like Porous Micron-Sized Red Phosphorus for High-Performance Lithium Storage

et al. 2021

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Large-volume-expansion-induced material pulverization severely limits the electrochemical performance of high-capacity red phosphorus (RP) in alkali-ion batteries. Honeycomb-like porous materials can effectively solve the issues due to their abundant interconnected pore structures. Nevertheless, it is difficult and greatly challenging to fabricate a honeycomb-like porous RP that has not yet been fabricated via chemical synthesis. Herein, we successfully fabricate a honeycomb-like porous micron-sized red phosphorus (HPRP) with a controlled pore structure via a large-scale green and templateless hydrothermal strategy. It is demonstrated that dissolved oxygen in the solution can accelerate the destruction of P9 cages of RP, thus forming abundant active defects with a faster reaction rate, so the fast corrosion forms the honeycomb-like porous structure. Owing to the free volume, interconnected porous structure, and strong robustness, the optimized HPRP-36 can mitigate drastic volume variation and prevent pulverization during cycling resulting in tiny particle-level outward expansion, demonstrated by in situ TEM and ex situ SEM analysis. Thus, the HPRP-36 anode delivers a large reversible capacity (2587.4 mAh g −1 at 0.05 A g −1 ) and long-cycling stability with over 500 cycles (∼81.9% capacity retention at 0.5 A g −1 ) in lithium-ion batteries. This generally scalable, green strategy and deep insights provide a good entry point in designing honeycomb-like porous micron-sized materials for highperformance electrochemical energy storage and conversion.

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“…Unfortunately, Sb suffers from significant volume expansion (~ 390%) during electrochemical processes, leading to serious aggregation and pulverization of electrode materials, which deteriorates the electrochemical performances [103,104]. To resolve the above challenges, the construction of nanostructured Sb/carbon or Sb/MXene composites has been widely recognized as an effective and straightforward strategy [105][106][107][108][109][110]. The nanostructured Sb can release the stress stemming from volume variations, while the carbon matrix/MXene sheets not only buffer the volume changes but also ensure the continuous electrical networks.…”

Section: Antimony (Sb)mentioning

confidence: 99%

Recent advances in anode materials for potassium-ion batteries: A review

et al. 2021

Nano Res.

100

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Potassium-ion batteries (PIBs) are appealing alternatives to conventional lithium-ion batteries (LIBs) because of their wide potential window, fast ionic conductivity in the electrolyte, and reduced cost. However, PIBs suffer from sluggish K + reaction kinetics in electrode materials, large volume expansion of electroactive materials, and the unstable solid electrolyte interphase. Various strategies, especially in terms of electrode design, have been proposed to address these issues. In this review, the recent progress on advanced anode materials of PIBs is systematically discussed, ranging from the design principles, and nanoscale fabrication and engineering to the structure-performance relationship. Finally, the remaining limitations, potential solutions, and possible research directions for the development of PIBs towards practical applications are presented. This review will provide new insights into the lab development and real-world applications of PIBs.

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Heterogeneous interface of Se@Sb@C boosting potassium storage

Cited by 57 publications

References 47 publications

Rational Design of Yolk–Shell ZnCoSe@N‐Doped Dual Carbon Architectures as Long‐Life and High‐Rate Anodes for Half/Full Na‐Ion Batteries

Rational Design of Yolk–Shell ZnCoSe@N‐Doped Dual Carbon Architectures as Long‐Life and High‐Rate Anodes for Half/Full Na‐Ion Batteries

Green, Template-Less Synthesis of Honeycomb-like Porous Micron-Sized Red Phosphorus for High-Performance Lithium Storage

Recent advances in anode materials for potassium-ion batteries: A review

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