Hierarchical hydrangea-like configuration constructed from MoSe2 nanosheets anchored on core-shell Fe3O4@C nanocubes for highly stable and fast ion-transport sodium-storage anode

Zhao, Wenxi; Ma, Xiaoqing; Li, Yadong; Wang, Guangzhao; Zhang, Wanli; Zhang, Peng; Long, Xiaojiang

doi:10.1016/j.scriptamat.2021.114147

Cited by 7 publications

(2 citation statements)

References 29 publications

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“…Herein, k 1 v and k 2 v 1/2 are the capacitive part and diffusion part, respectively. − Figure e displays the percentage of capacitive contribution of the CaV 6 O 16 ·3H 2 O/GO hybrid paper at different scan rates. The percentages of capacitive contribution are 20.3, 30.0, 37.6, 44.2, and 49.7% with the increase in scan rate from 0.2 to 1.0 mV s –1 .…”

Section: Results and Discussionmentioning

confidence: 99%

Calcium Vanadate Micro/Nanostructures for Lithium-Ion Batteries

Zhang

Wang

Hou

et al. 2022

ACS Appl. Nano Mater.

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The ability to control the composition and structure of inorganic compounds by simple synthesis methods is essential to the design and development of electrode materials of lithium-ion batteries (LIBs). Here we report the controllable synthesis of calcium vanadate micro/nanostructures via a simple hydrothermal method. By easily adjusting the pH value of a reaction system, a Ca10V6O25 straw-bundle-like structure, Ca2V2O7 microplatelet, and CaV6O16·3H2O sponge-like macrostructure can be selectively synthesized. The regulation mechanism of different calcium vanadate micro/nanostructures was investigated. In addition, CaV6O16·3H2O and CaV6O16·3H2O/GO self-standing papers were obtained by pressing the sponge-like macrostructure and vacuum filtration, respectively. The electrochemical performances of the CaV6O16·3H2O and CaV6O16·3H2O/GO papers as the self-standing and binder-free anodes for LIBs were investigated for the first time. The as-obtained CaV6O16·3H2O/GO hybrid paper anode exhibits a high discharge capacity of 664.0 mA h g–1 after 250 cycles at 200 mA g–1 and good cycling stability, demonstrating its potential application as a self-standing anode for LIBs.

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Section: Results and Discussionmentioning

confidence: 99%

Calcium Vanadate Micro/Nanostructures for Lithium-Ion Batteries

Zhang

Wang

Hou

et al. 2022

ACS Appl. Nano Mater.

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“…Rechargeable sodium-ion batteries (SIBs) have received considerable attention as a promising alternative to lithium-ion batteries (LIBs) because of the earth abundance and low cost of elemental sodium compared to lithium, which is especially important for large-scale grid energy storage in the future. − Currently, the search for a suitable anode material is an urgent task for SIBs because commercial graphite anodes in LIBs cannot be directly employed as anodes for SIBs owing to an ultralow capacity of ∼30 mAh g –1 . To date, other types of carbonaceous materials (e.g., hard carbon, soft carbon), − intercalation-based anode (e.g., Li 4 Ti 5 O 12 ), alloying-based anode (e.g., Sn, Sb, P), and conversion-based anode (e.g., phosphides, oxides, sulfides, and selenides) − materials have been widely investigated. Among them, alloying or conversion-based anode materials usually show higher capacities of over 600 mAh g –1 , thus enabling their great potential for high-energy SIBs.…”

Section: Introductionmentioning

confidence: 99%

Porous Sb Nanocubes Embedded in Three-Dimensional Interconnected Nitrogen-Doped Carbon Frameworks for Enhanced Sodium Storage

Bin

Long

Yang

et al. 2022

ACS Appl. Energy Mater.

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Antimony (Sb) has been considered an attractive anode material for sodium-ion batteries (SIBs) because of its high theoretical capacity (660 mAh g −1 ), abundant resources, and relatively safe working potential (∼0.8 V). However, such an anode still suffers from huge volume change and repeated formation/destruction of a solid electrolyte interface (SEI) at the interface upon sodiation/de-sodiation, thus leading to poor electrochemical performance. To address these issues, we design and construct a unique hybrid nanostructure built from hollow/porous Sb nanocubes embedded in interconnected nitrogen-doped carbon frameworks. Such a hybrid combines the merits of internal void engineering for the Sb anode and threedimensional (3D) continuous conductive protection layer where the former can efficiently accommodate the structural strain upon sodiation and de-sodiation processes, while the latter not only prevents the direct contact of an electrolyte and active component but also provides a high-efficiency electron/ion transport system, consequently leading to higher structure/ interface stability and better sodium storage capability. When evaluated as an anode for SIBs, such a hybrid delivers reversible capacities of 588.8 mAh g −1 at 0.05 A g −1 and 359.4 mAh g −1 at 2 A g −1 , as well as retains a specific capacity of 347.8 mAh g −1 after 200 cycles at 1 A g −1 . Our work provides a simple and effective strategy to construct a unique 3D interconnected hybrid architecture with a simultaneously improved structure and interface stability for the alloying-based anode.

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Double‐Carbon‐Layer Coated Na₄MnV(PO₄)₃ Towards High‐Performance Sodium‐Ion Full Batteries

Bai

Wang

et al. 2022

Adv Materials Inter

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technology. However, the much larger ionic radius of sodium is disadvantageous for the battery performance, which will cause serious structural changes during the Na + intercalation/deintercalation process. Similar to LIBs, looking for a suitable cathode material is the key to exploring high-performance SIBs. At present, transition metal oxides, prussian blue analogues, and polyanionic compounds have shown excellent sodium storage abilities for SIBs application. [4,5] Among them, NASICON-type phosphates, a class of polyanionic compounds with advantages of stable structure and rapid ion diffusion kinetics, are considered to be competitive cathode materials for high-performance SIBs. [6,7] As a typical representative of the NASICON-type phosphate materials, Na 3 V 2 (PO 4 ) 3 (NVP) has been extensively researched due to its excellent ionic conductivity and good structural stability. [8] NVP also owns a satisfactory theoretical capacity of 117 mAh g −1 , a high voltage plateau of about 3.4 V, and an impressive theoretical energy density of about 400 Wh kg −1 . All of these advantages make NVP a promising cathode material for SIBs. Nevertheless, the biological toxicity and expensive price of vanadium in the material limit its practical applications. [9] To overcome these shortcomings, preparing NVP analogues by substituting partially V with more cheap elements, such as Mn, Mg, Fe, and so on, maybe a possible and effective strategy. [10][11][12][13] Among the various NVP analogues, Na 4 MnV(PO 4 ) 3 (NMVP), which was obtained by a proper Mn substitution for V, has attracted extreme attention due to its high capacity, high discharge platform, and low cost. Unfortunately, the rate and cycle performance of NMVP are unsatisfactory due to the much poor electronic conductivity. [14] Growing NMVP on the conductive substrate is a generally used strategy to enhance its electronic conductivity. The electronic conductivity of NMVP was effectively enhanced through the addition of reduced graphene oxide (rGO) in the material by Kumar et al. Due to the uniform combination of the active particles on the rGO network, the NMVP assembled half-cell delivered 86 mAh g −1 discharge capacity over 100 cycles at a 0.1 C rate. [15] Zhou et al. synthesized a carbon-encapsulated NMVP nanorod material and the material delivered a high initial discharge capacity of 112.3 mAh g −1 at 0.02 A g −1 and high capacity retention of 85.1% after 1200 cycles As an improved structure of NASICON-type Na 3 V 2 (PO 4 ) 3 cathode for sodiumion batteries, Na 4 MnV(PO 4 ) 3 (NMVP) has series advantages of low cost and weak biological toxicity through partial elemental substitution of manganese for vanadium. However, the low electronic conductivity and poor cycle stability of NMVP need to be solved for the purpose of practical application. Herein, the electronic conductivity and structural stability of NMVP material are enhanced through a double-carbon-layer coating strategy by a simple sol-gel synthesis method. The coated double-carbon layer can construct a condu...

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Hierarchical hydrangea-like configuration constructed from MoSe2 nanosheets anchored on core-shell Fe3O4@C nanocubes for highly stable and fast ion-transport sodium-storage anode

Cited by 7 publications

References 29 publications

Calcium Vanadate Micro/Nanostructures for Lithium-Ion Batteries

Calcium Vanadate Micro/Nanostructures for Lithium-Ion Batteries

Porous Sb Nanocubes Embedded in Three-Dimensional Interconnected Nitrogen-Doped Carbon Frameworks for Enhanced Sodium Storage

Double‐Carbon‐Layer Coated Na₄MnV(PO₄)₃ Towards High‐Performance Sodium‐Ion Full Batteries

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Hierarchical hydrangea-like configuration constructed from MoSe2 nanosheets anchored on core-shell Fe3O4@C nanocubes for highly stable and fast ion-transport sodium-storage anode

Cited by 7 publications

References 29 publications

Calcium Vanadate Micro/Nanostructures for Lithium-Ion Batteries

Calcium Vanadate Micro/Nanostructures for Lithium-Ion Batteries

Porous Sb Nanocubes Embedded in Three-Dimensional Interconnected Nitrogen-Doped Carbon Frameworks for Enhanced Sodium Storage

Double‐Carbon‐Layer Coated Na4MnV(PO4)3 Towards High‐Performance Sodium‐Ion Full Batteries

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Product

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Double‐Carbon‐Layer Coated Na₄MnV(PO₄)₃ Towards High‐Performance Sodium‐Ion Full Batteries