Tetrafunctional template-assisted strategy to preciously construct co-doped Sb@C nanofiber with longitudinal tunnels for ultralong-life and high-rate sodium storage

Liu, Zhiming; Sun, Hongran; Wang, Xiaojun; Gu, Zhen‐Yi; Xu, Changmeng; Li, Huifang; Zhang, Guoxin; He, Yan; Wu, Xing‐Long

doi:10.1016/j.ensm.2022.03.010

Cited by 39 publications

(18 citation statements)

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“…The full cells are denoted as Bi 2 O 3 @C-NFs-600-4h//NVPOF. The cathode material was prepared using the previously reported work . The morphology and size of the prepared NVPOF were examined by SEM (Figure S18a).…”

Section: Resultsmentioning

confidence: 99%

“…Theoretical calculation suggests that partial Group IVA and VA metals, as well as their compounds (e.g., oxides, sulfides, and selenides), are capable of delivering high capacities by forming Na-rich intermetallic compounds such as Na 3 Sb and Na 3 Bi through a combination of conversion and alloying reaction mechanisms. − Among them, bismuth oxide (Bi 2 O 3 ) has attracted considerable attention due to its high theoretical capacity (669.8 mAh g –1 ), nearly two times higher than that of bismuth (Bi) (385 mAh g –1 ) . Furthermore, Bi 2 O 3 also has outstanding pros such as environmental friendliness, abundant sources, and relatively low cost .…”

Section: Introductionmentioning

confidence: 99%

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Novel Preoxidation-Assisted Mechanism to Preciously Form and Disperse Bi₂O₃ Nanodots in Carbon Nanofibers for Ultralong-Life and High-Rate Sodium Storage

Tian

Sun

et al. 2023

ACS Appl. Mater. Interfaces

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Metal oxides, as promising electrode materials for sodium-ion batteries, usually need to be formed by exposure to oxygen, which usually thermally corrodes the carbon material with which they are compounded, reducing their flexibility and electrical conductivity. Herein, we present for the first time a preoxidation-assisted mechanism to prepare bismuth oxide and carbon nanofibers (Bi 2 O 3 @C-NFs) by electrospinning, using Bi 2 S 3 nanorods as multifunctional templates. The bismuth could be oxidized by C�O bonds formed through the cyclization reaction in the high-temperature calcination process, effectively avoiding thermal corrosion of carbon in oxygen atmosphere at high temperature. More importantly, the uniformly distributed Bi 2 O 3 nanodots and longitudinal tunnels are formed inside the S-and N-doped carbon nanofibers with the continuous diffusion of Bi generated from the decomposition of Bi 2 S 3 nanorods and the conversion to Bi�O bonds with C�O bonds being broken. Benefiting from the structural and composition merits arising from preoxidation, Bi 2 O 3 @C-NFs self-supporting anodes show high specific capacity (439 mAh g −1 at 0.05 A g −1 ), superior rate performance (243 mAh g −1 at a current density of 20 A g −1 ), and outstanding cycling stability (211 mAh g −1 after 2000 cycles at 5 A g −1 ). The effective combination of the well-established electrospinning technology and the preoxidation assisted mechanism provides a new way for the preparation of metal oxide and carbon composites.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Novel Preoxidation-Assisted Mechanism to Preciously Form and Disperse Bi₂O₃ Nanodots in Carbon Nanofibers for Ultralong-Life and High-Rate Sodium Storage

Tian

Sun

et al. 2023

ACS Appl. Mater. Interfaces

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“…Based on the power-law equation between the peak current (i) and the sweep rate (v): i = av b , 47,48 the value of b can be obtained using the following equation: log(i) = b log(v) + log(a). 49,50 The b value can be determined from the slope of the log(i) − log(v) plot and judges the capacitive or diffusioncontrolled mechanisms during lithium storage. 51 The b values This journal is © The Royal Society of Chemistry 2022 37 the capacitive contribution can be estimated.…”

Section: Electrochemical Characterization Of the CD 07 Zn 03 S-b Elec...mentioning

confidence: 99%

Twin boundary Cd_xZn_1−xS: a new anode for high reversibility and stability lithium/sodium-ion batteries

et al. 2022

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“…[ 2,6–10 ] Among the aforementioned anode materials, alloy‐typed metal anodes (e.g., metallic Sb) show potential use in PIBs due to their superior metallic conductivity, large theoretical capacity (e.g., the theoretical capacity of Sb is 660 mAh g −1 for M 3 Sb, M = K), and high volumetric density (Sb: 6.7 g cm −3 ). [ 11–14 ] However, the huge volume expansion and severe pulverization of alloy‐typed metal anodes during the potassiation and depotassiation processes result in a sharp decrease in capacity. The general strategy addresses the issues to downsize the active materials to nano sizes and make composites with elastic carbon materials.…”

Section: Introductionmentioning

confidence: 99%

Green and Scalable Template‐Free Strategy to Fabricate Honeycomb‐Like Interconnected Porous Micro‐Sized Layered Sb for High‐Performance Potassium Storage

Liu

Zhu

Yue

et al. 2022

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for M 3 Sb, M = K), and high volumetric density (Sb: 6.7 g cm −3 ). [11][12][13][14] However, the huge volume expansion and severe pulverization of alloy-typed metal anodes during the potassiation and depotassiation processes result in a sharp decrease in capacity. The general strategy addresses the issues to downsize the active materials to nano sizes and make composites with elastic carbon materials. These strategies can effectively accommodate the huge volume expansion of alloy-typed metal anodes and shorten the potassium ion diffusion distance in the solid phase, improving their rate performance and cycling stability in batteries. However, due to the simultaneous introduction of nanosized active materials and low-density inactive carbon, the commercial applications are severely impeded by the complex synthesis of alloy-typed metal anodes, insufficient specific capacity (based on the whole electrode), and low tap density generating low volumetric capacity. [12,[15][16][17] Additionally, they display an insufficient initial coulombic efficiency (ICE) due to the use of porous carbon that formed a thick solid electrolyte interphase (SEI). For example, Zhang et al. reported a composite structure (Sb@CNFs) consisting of nano-Sb embedded in carbon nanofibers. [18] This provided a specific capacity of 227 mAh g −1 after 1000 cycles at 1.0 A g −1 . However, its practical application prospects were severely hindered by the low ICE (47 %), stemming from its large specific surface area and the irreversible formation of the thick SEI. To address these issues, micro-sized active materials are preferred as direct anodes due to their large particle sizes, which obviously increase their tap density, and the appropriate specific surface area that effectively reduces the side reactions between the electrolyte and active materials. However, the micro-sized active materials have a prolonged ion diffusion distance in the solid phase and generate severe pulverization because of their large volume expansion. Therefore, their application as anodes in PIBs gave insufficient rate capacity and fast capacity decay, especially in long cycling. Therefore, proposing an effective method for fabricating a unique micro-sized metallic electrode material yet retaining its high tap density is interesting yet challenging, thus to significantly promote the rate capacity and cycling lifespan of micro-sized electrode materials.The tremendous volume change and severe pulverization of micro-sized Sb anode generate no stable capacity in potassium-ion batteries (PIBs). The honeycomb-like porous structure provides free spaces to accommodate its volume expansion and offers efficient ion transport, yet complex synthesis and low yield limits its large-scale application. Here, a green, scalable template-free method for designing a 3D honeycomb-like interconnected porous micro-sized Sb (porous-Sb) is proposed. Its honeycomb-like porous formation mechanism is also verified. Under hydrothermal conditions, Sb reacts with water and dissolved oxygen in water, under...

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Tetrafunctional template-assisted strategy to preciously construct co-doped Sb@C nanofiber with longitudinal tunnels for ultralong-life and high-rate sodium storage

Cited by 39 publications

References 58 publications

Novel Preoxidation-Assisted Mechanism to Preciously Form and Disperse Bi₂O₃ Nanodots in Carbon Nanofibers for Ultralong-Life and High-Rate Sodium Storage

Novel Preoxidation-Assisted Mechanism to Preciously Form and Disperse Bi₂O₃ Nanodots in Carbon Nanofibers for Ultralong-Life and High-Rate Sodium Storage

Twin boundary Cd_xZn_1−xS: a new anode for high reversibility and stability lithium/sodium-ion batteries

Green and Scalable Template‐Free Strategy to Fabricate Honeycomb‐Like Interconnected Porous Micro‐Sized Layered Sb for High‐Performance Potassium Storage

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Tetrafunctional template-assisted strategy to preciously construct co-doped Sb@C nanofiber with longitudinal tunnels for ultralong-life and high-rate sodium storage

Cited by 39 publications

References 58 publications

Novel Preoxidation-Assisted Mechanism to Preciously Form and Disperse Bi2O3 Nanodots in Carbon Nanofibers for Ultralong-Life and High-Rate Sodium Storage

Novel Preoxidation-Assisted Mechanism to Preciously Form and Disperse Bi2O3 Nanodots in Carbon Nanofibers for Ultralong-Life and High-Rate Sodium Storage

Twin boundary CdxZn1−xS: a new anode for high reversibility and stability lithium/sodium-ion batteries

Green and Scalable Template‐Free Strategy to Fabricate Honeycomb‐Like Interconnected Porous Micro‐Sized Layered Sb for High‐Performance Potassium Storage

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Novel Preoxidation-Assisted Mechanism to Preciously Form and Disperse Bi₂O₃ Nanodots in Carbon Nanofibers for Ultralong-Life and High-Rate Sodium Storage

Novel Preoxidation-Assisted Mechanism to Preciously Form and Disperse Bi₂O₃ Nanodots in Carbon Nanofibers for Ultralong-Life and High-Rate Sodium Storage

Twin boundary Cd_xZn_1−xS: a new anode for high reversibility and stability lithium/sodium-ion batteries