Sb2Te3 hexagonal nanoplates as conversion-alloying anode materials for superior potassium-ion storage via physicochemical confinement effect of dual carbon matrix

Chong, Shaokun; Qiao, Shuangyan; Yuan, Lingling; Zhou, Qianwen; Li, Ting; Dong, Shihong; Wang, Yikun; Ma, Meng; Huang, Wei

doi:10.1016/j.cej.2023.141957

Cited by 15 publications

(9 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…41,42 Moreover, the two reduction peaks at 0.83 and 0.27 V correspond to the conversion reaction of K x Bi 2 Te 3−x to produce Bi and K 5 Te 3 , and the stepwise-alloying reaction of Bi to form KBi 2 and K 3 Bi, respectively. 20,41,42 In the subsequent anodic scan, two distinct anodic peaks appearing at 0.62 and 1.18 V are attributed to the gradual dealloying process of K 3 Bi, 41,42 while the oxidation peak at 1.72 V is associated with the reverse conversion reaction of Bi returning to Bi 2 Te 3 . Noticeably, the oxidation peaks of the CV curve show a slight shift in the second and third cycles, which can be indexed to electrode activation and the nanocrystallization of Bi 2 Te 3 particles.…”

Section: Resultsmentioning

confidence: 99%

“…Despite the above-mentioned merits, the volume expansion effect of Bi 2 Te 3 anode materials and the sluggish kinetics caused by the large size of K + during the potassiation/ depotassiation processes are severely hindering the prospects of Bi 2 Te 3 for commercialization. 19,20 Conventional strategies for improving MTes anodes involve incorporating carbon coating of the active materials to stabilize the structure (e.g., CoTe 2 @NPCNFs@NC 21 ), constructing specialized architectures to buffer the volume stress (e.g., ZnTe core−shell nanowires 22 ), and enlargement of the layer spacing to accelerate K ions transport and mitigate crystal structure destruction (e.g., MoTe 2 23 ). In addition, defect engineering is generally employed to adjust the atomic distribution of nanomaterials and enhance their surface properties, thereby optimizing the electronic structure of materials and facilitating their electrochemical reaction kinetics.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, Bi 2 Te 3 is deemed to be a promising anode material for high-performance PIBs. Despite the above-mentioned merits, the volume expansion effect of Bi 2 Te 3 anode materials and the sluggish kinetics caused by the large size of K + during the potassiation/depotassiation processes are severely hindering the prospects of Bi 2 Te 3 for commercialization. , …”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Unveiling the Synergy of Architecture and Anion Vacancy on Bi₂Te_3–x@NPCNFs for Fast and Stable Potassium Ion Storage

Wang,

Li,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Large volume strain and slow kinetics are the main obstacles to the application of high-specific-capacity alloy-type metal tellurides in potassium-ion storage systems. Herein, Bi 2 Te 3−x nanocrystals with abundant Te-vacancies embedded in nitrogen-doped porous carbon nanofibers (Bi 2 Te 3−x @NPCNFs) are proposed to address these challenges. In particular, a hierarchical porous fiber structure can be achieved by the polyvinylpyrrolidone-etching method and is conducive to increasing the Te-vacancy concentration. The unique porous structure together with defect engineering modulates the potassium storage mechanism of Bi 2 Te 3 , suppresses structural distortion, and accelerates K + diffusion capacity. The meticulously designed Bi 2 Te 3−x @NPCNFs electrode exhibits ultrastable cycling stability (over 3500 stable cycles at 1.0 A g −1 with a capacity degradation of only 0.01% per cycle) and outstanding rate capability (109.5 mAh g −1 at 2.0 A g −1 ). Furthermore, the systematic ex situ characterization confirms that the Bi 2 Te 3−x @NPCNFs electrode undergoes an "intercalation-conversion-step alloying" mechanism for potassium storage. Kinetic analysis and density functional theory calculations reveal the excellent pseudocapacitive performance, attractive K + adsorption, and fast K + diffusion ability of the Bi 2 Te 3−x @NPCNFs electrode, which is essential for fast potassium-ion storage. Impressively, the assembled Bi 2 Te 3−x @NPCNFs//activated-carbon potassium-ion hybrid capacitors achieve considerable energy/power density (energy density up to 112 Wh kg −1 at a power density of 1000 W kg −1 ) and excellent cycling stability (1600 cycles at 10.0 A g −1 ), indicating their potential practical applications.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Unveiling the Synergy of Architecture and Anion Vacancy on Bi₂Te_3–x@NPCNFs for Fast and Stable Potassium Ion Storage

Wang,

Li,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…Another chalcogenide material, tellurides (such as SnTe, Sb 2 Te 3 , Bi 2 Te 3 ), with higher conductivity, larger interplanar spacing and higher density compared with oxides, sulfides and selenides, have been widely adopted for SIBs anodes. − These intrinsic features allow outstanding rate ability and high theoretical volumetric capacity. , It was revealed that the reaction products between Na-ion and Sb 2 Te 3 were Na 3 Sb and Na 2 Te . Later, the sodiation-desodiation process of Bi 2 Te 3 anode was investigated via in situ XRD and ex situ HRTEM techniques .…”

Section: Conversion-alloying Anode Materialsmentioning

confidence: 99%

“…252−255 These intrinsic features allow outstanding rate ability and high theoretical volumetric capacity. 256,257 It was revealed that the reaction products between Na-ion and Sb 2 Te 3 were Na 3 Sb and Na 2 Te. 258 Later, the sodiationdesodiation process of Bi 2 Te 3 anode was investigated via in situ XRD and ex situ HRTEM techniques.…”

Section: Conversion-alloying Anode Materialsmentioning

confidence: 99%

Advanced Anode Materials for Rechargeable Sodium-Ion Batteries

et al. 2023

Self Cite

View full text Add to dashboard Cite

Rechargeable sodium-ion batteries (SIBs) have been considered as promising energy storage devices owing to the similar "rocking chair" working mechanism as lithium-ion batteries and abundant and low-cost sodium resource. However, the large ionic radius of the Na-ion (1.07 Å) brings a key scientific challenge, restricting the development of electrode materials for SIBs, and the infeasibility of graphite and silicon in reversible Na-ion storage further promotes the investigation of advanced anode materials. Currently, the key issues facing anode materials include sluggish electrochemical kinetics and a large volume expansion. Despite these challenges, substantial conceptual and experimental progress has been made in the past. Herein, we present a brief review of the recent development of intercalation, conversion, alloying, conversion-alloying, and organic anode materials for SIBs. Starting from the historical research progress of anode electrodes, the detailed Na-ion storage mechanism is analyzed. Various optimization strategies to improve the electrochemical properties of anodes are summarized, including phase state adjustment, defect introduction, molecular engineering, nanostructure design, composite construction, heterostructure synthesis, and heteroatom doping. Furthermore, the associated merits and drawbacks of each class of material are outlined, and the challenges and possible future directions for high-performance anode materials are discussed.

show abstract

Regulating Built‐in Polar States via Atomic Self‐Hybridization for Fast Ion Diffusion Kinetics in Potassium Ion Batteries^†

Du,

Zhou,

et al. 2024

Chin. J. Chem.

View full text Add to dashboard Cite

Comprehensive SummaryPotassium ion batteries (PIBs) are of great interest owing to the low cost and abundance of potassium resources, while the sluggish diffusion kinetics of K+ in the electrode materials severely impede their practical applications. Here, self‐hybridized BiOCl0.5Br0.5 with a floral structure is assembled and used as anode for PIBs. Based on the systematic theoretical calculation and experimental analysis, the unbalance of charge distribution between Cl and Br atoms leads to an enhanced built‐in electric field and a larger interlayer spacing, which can enhance the K+ diffusion. Furthermore, the K+ insertion causes the energetic evolution of polar states in the BiOCl0.5Br0.5 crystal framework, where the dynamic correlation between the K+ and the halogen atoms leads to the formation of hole‐like polarons, which significantly improves the K+ diffusion and reaction kinetics during the charging/discharging process, giving important implications to design the electrode materials with high electrochemical performance by engineering the interaction between electronic structure and interface. Therefore, the BiOCl0.5Br0.5 anode obtains an excellent performance of 171 mAh·g–1 at 1 A·g–1 over 2000 cycles in PIBs.

show abstract

Sb2Te3 hexagonal nanoplates as conversion-alloying anode materials for superior potassium-ion storage via physicochemical confinement effect of dual carbon matrix

Cited by 15 publications

References 72 publications

Unveiling the Synergy of Architecture and Anion Vacancy on Bi₂Te_3–x@NPCNFs for Fast and Stable Potassium Ion Storage

Unveiling the Synergy of Architecture and Anion Vacancy on Bi₂Te_3–x@NPCNFs for Fast and Stable Potassium Ion Storage

Advanced Anode Materials for Rechargeable Sodium-Ion Batteries

Regulating Built‐in Polar States via Atomic Self‐Hybridization for Fast Ion Diffusion Kinetics in Potassium Ion Batteries^†

Contact Info

Product

Resources

About

Sb2Te3 hexagonal nanoplates as conversion-alloying anode materials for superior potassium-ion storage via physicochemical confinement effect of dual carbon matrix

Cited by 15 publications

References 72 publications

Unveiling the Synergy of Architecture and Anion Vacancy on Bi2Te3–x@NPCNFs for Fast and Stable Potassium Ion Storage

Unveiling the Synergy of Architecture and Anion Vacancy on Bi2Te3–x@NPCNFs for Fast and Stable Potassium Ion Storage

Advanced Anode Materials for Rechargeable Sodium-Ion Batteries

Regulating Built‐in Polar States via Atomic Self‐Hybridization for Fast Ion Diffusion Kinetics in Potassium Ion Batteries†

Contact Info

Product

Resources

About

Unveiling the Synergy of Architecture and Anion Vacancy on Bi₂Te_3–x@NPCNFs for Fast and Stable Potassium Ion Storage

Unveiling the Synergy of Architecture and Anion Vacancy on Bi₂Te_3–x@NPCNFs for Fast and Stable Potassium Ion Storage

Regulating Built‐in Polar States via Atomic Self‐Hybridization for Fast Ion Diffusion Kinetics in Potassium Ion Batteries^†