Exposed high-energy facets in ultradispersed sub-10 nm SnO2 nanocrystals anchored on graphene for pseudocapacitive sodium storage and high-performance quasi-solid-state sodium-ion capacitors

Zhang, Panpan; Zhao, Xinne; Liu, Zaichun; Wang, Faxing; Huang, Ying; Li, Hongyan; Yang, Li; Wang, Jinhui; Su, Zhiqiang; Wei, Gang; Zhu, Yusong; Fu, Lijun; Wu, Yuping; Huang, Wei

doi:10.1038/s41427-018-0049-y

Cited by 50 publications

(42 citation statements)

References 65 publications

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“…In contrast, the R b of ZnFC‐PVA increases drastically to ≈13 ohm, together with a noticeable increase in R i . These differences suggest that the PAA hydrogel can maintain good interfacial contacts between electrodes and electrolyte, which enable ZnFC‐PAA's stable operation . We also carried out a cycling stability test on both ZnFCs.…”

Section: Resultsmentioning

confidence: 99%

“…Miniaturizing such hybrid capacitors is expected to deliver FCs with high energy densities. Different cations have been explored to fabricate metal‐ion hybrid capacitors, including both monovalent (e.g., Li + , Na + , and K + ) and multivalent (e.g., Mg 2+ , Zn 2+ , Ni 2+ , Ca 2+ , and Al 3+ ) cations . Among these cations, the Zn‐ion capacitors utilize fast surface stripping/plating on Zn metal electrodes resulting in a high theoretical energy storage capacity of 823 mAh g −1 .…”

Section: Introductionmentioning

confidence: 99%

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Flexible Zinc‐Ion Hybrid Fiber Capacitors with Ultrahigh Energy Density and Long Cycling Life for Wearable Electronics

Zhang

Pei

Wang

et al. 2019

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Emerging wearable electronics require flexible energy storage devices with high volumetric energy and power densities. Fiber‐shaped capacitors (FCs) offer high power densities and excellent flexibility but low energy densities. Zn‐ion capacitors have high energy density and other advantages, such as low cost, nontoxicity, reversible Faradaic reaction, and broad operating voltage windows. However, Zn‐ion capacitors have not been applied in wearable electronics due to the use of liquid electrolytes. Here, the first quasisolid‐state Zn‐ion hybrid FC (ZnFC) based on three rationally designed components is demonstrated. First, hydrothermally assembled high surface area and conductive reduced graphene oxide/carbon nanotube composite fibers serve as capacitor‐type positive electrodes. Second, graphite fibers coated with a uniform Zn layer work as battery‐type negative electrodes. Third, a new neutral ZnSO4‐filled polyacrylic acid hydrogel act as the quasisolid‐state electrolyte, which offers high ionic conductivity and excellent stretchability. The assembled ZnFC delivers a high energy density of 48.5 mWh cm−3 at a power density of 179.9 mW cm−3. Further, Zn dendrite formation that commonly happens under high current density is efficiently suppressed on the fiber electrode, leading to superior cycling stability. Multiple ZnFCs are integrated as flexible energy storage units to power wearable devices under different deformation conditions.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flexible Zinc‐Ion Hybrid Fiber Capacitors with Ultrahigh Energy Density and Long Cycling Life for Wearable Electronics

Zhang

Pei

Wang

et al. 2019

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157

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“…[1,2] Furthermore, some novel batteries, such as lithium-sulfur (Li-S) and lithium-oxygen (Li-O 2 )b atteries, have also been investigated because of their very low cost and unbeatable energy density.I ti sk nown that the electrochemical properties of rechargeable batteries depend largely on the structurea nd compositiono ft he electrode. To lessen these problems, severale nergy technologies, especially energy-storaged evices,s uch as supercapacitors and rechargeable batteries, have been established in recent decades.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover,a long with the increasing significance of portable electronic devices,s mart grids, and electric vehicles, the demands for eco-friendly and low-cost electrochemically rechargeable batteries, including lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs), with high energy,l ong life span, and high safety are extremelyc ompelling. [1,2] Furthermore, some novel batteries, such as lithium-sulfur (Li-S) and lithium-oxygen (Li-O 2 )b atteries, have also been investigated because of their very low cost and unbeatable energy density.I ti sk nown that the electrochemical properties of rechargeable batteries depend largely on the structurea nd compositiono ft he electrode. [3][4][5] Therefore, an umber of electrode materials with variousa rchi-tectures have been rationally designed and fabricated to maximize the electrochemical properties of the battery systems.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress on Molybdenum Oxides for Rechargeable Batteries

et al. 2019

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bility during the reaction, andl ow electronic conductivity (ca. 10 À5 Scm À1 ). [28,29] Reduced molybdenum oxides,i ncluding MoO 2 and MoO x (2 < x < 3), with intrinsic oxygen vacancies, comparedwith pure MoO 3 ,can greatly increase the conductivity,a nd have been studied as attractive electrode materials. [30,31] Unfortunately,a s-fabricated batteries based on MoO 2 or MoO x electrodes still suffer from poor cycling stability and low recharge efficiency.T herefore, much effort has been invested over the past few years to pursuet he high energy efficiency, high cycling stability,a nd prominentr ate capability of molybdenum oxide-based electrodes for rechargeable batteries.Herein, we presentabrief summary of recent progress in the use of molybdenum oxides, including MoO 3 and MoO 2 ,a s well their composites, as electrodes for rechargeable batteries, such as LIBs, SIBs, Li-S batteries, Li-O 2 batteries, and other novel battery systems. The charge-storage mechanisms, fabrication of the electrode structures, and electrochemical performances, combined with their relationships, are mainlyd iscussed. This Minireview focuseso nc urrently developed strategies to improvet he energy-storage performances of the electrodes, through morphology modification,d efect engineering, and synergistic effects of hybrid electrodes, and thus, to optimize the electrochemical properties of the batteries. Finally, perspectives on MoO 3 -a nd MoO 2 -based compounds for the future development of rechargeable batteries are also presented.

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“…Lithium ion batteries (LIBs) with global ever‐increasing demand are hindered by the shortage of lithium resources, and sodium ion batteries (SIBs) have been considered as one of the most promising substitutes for LIBs due to the sodium abundance and similar physical/chemical properties to lithium . However, the ionic radius of Na + (1.02 Å) is larger than that of Li + (0.76 Å), which leads to sluggish kinetics for the Na + insertion/extraction in the electrode materials, thereby resulting in inferior electrochemical performance .…”

Section: Introductionmentioning

confidence: 99%

Lithium Pre‐cycling Induced Fast Kinetics of Commercial Sb₂S₃ Anode for Advanced Sodium Storage

Shang

et al. 2019

Energy & Environ Materials

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Because of the abundant sodium resources and identical fundamental principles, sodium ion batteries (SIBs) are the state‐of‐the‐art alternative for lithium ion batteries. However, the larger ionic radius of Na+ causes sluggish reaction kinetics, which directly results in inferior electrochemical performance. In this work, the sodium storage properties of commercial bulk Sb2S3 (CSS) were improved by a single lithiation/delithiation cycle obtaining the lithium pre‐cycled Sb2S3 (LSS). Quantitative analysis reveals that the sodiation/desodiation kinetics of CSS and LSS is mainly diffusion‐controlled behavior and capacitive process, respectively. Thus, the reaction kinetics of LSS is promising, which exhibits improved initial coulombic efficiency, stable cycling performance, and high rate capability. In addition, a stable Li‐containing solid electrolyte interphase film was formed during the lithiation process, which can prevent continuous consumption of electrolyte during the each sodiation process. These results demonstrate that prelithiation technique should be a potential strategy to promote practical application for SIBs.

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Exposed high-energy facets in ultradispersed sub-10 nm SnO2 nanocrystals anchored on graphene for pseudocapacitive sodium storage and high-performance quasi-solid-state sodium-ion capacitors

Cited by 50 publications

References 65 publications

Flexible Zinc‐Ion Hybrid Fiber Capacitors with Ultrahigh Energy Density and Long Cycling Life for Wearable Electronics

Flexible Zinc‐Ion Hybrid Fiber Capacitors with Ultrahigh Energy Density and Long Cycling Life for Wearable Electronics

Recent Progress on Molybdenum Oxides for Rechargeable Batteries

Lithium Pre‐cycling Induced Fast Kinetics of Commercial Sb₂S₃ Anode for Advanced Sodium Storage

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Exposed high-energy facets in ultradispersed sub-10 nm SnO2 nanocrystals anchored on graphene for pseudocapacitive sodium storage and high-performance quasi-solid-state sodium-ion capacitors

Cited by 50 publications

References 65 publications

Flexible Zinc‐Ion Hybrid Fiber Capacitors with Ultrahigh Energy Density and Long Cycling Life for Wearable Electronics

Flexible Zinc‐Ion Hybrid Fiber Capacitors with Ultrahigh Energy Density and Long Cycling Life for Wearable Electronics

Recent Progress on Molybdenum Oxides for Rechargeable Batteries

Lithium Pre‐cycling Induced Fast Kinetics of Commercial Sb2S3 Anode for Advanced Sodium Storage

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Product

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Lithium Pre‐cycling Induced Fast Kinetics of Commercial Sb₂S₃ Anode for Advanced Sodium Storage