Hollow Structure VS<sub>2</sub>@Reduced Graphene Oxide (RGO) Architecture for Enhanced Sodium‐Ion Battery Performance

Qi, Haimei; Wang, Lina; Zuo, Tiantian; Deng, Shunlan; Li, Qi; Liu, Zong–Huai; Hu, Peng; He, Xuexia

doi:10.1002/celc.201901958

ChemElectroChem

2019

DOI: 10.1002/celc.201901958

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Hollow Structure VS₂@Reduced Graphene Oxide (RGO) Architecture for Enhanced Sodium‐Ion Battery Performance

Haimei Qi

Lina Wang

Tiantian Zuo

et al.

Abstract: Invited for this month's cover picture is the group of Xuexia He from Shaanxi Normal University (China). The cover picture shows the synthesis of VS2 hollow flower spheres and its conductive composite materials. It could provide an important new synthetic avenue for future battery and renewable energy applications. Read the full text of the Article at 10.1002/celc.201901626.

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Cited by 23 publications

References 57 publications

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Addressing the Prominent Li⁺ Intercalation Process of Metal Sulfide Catalyst in Li‐S Batteries

Wang

Yang

et al. 2022

Adv Materials Inter

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and its discharge products (Li 2 S 2 /Li 2 S) are poor and will largely hinder the reaction kinetics of Li-S system; while the dissolution and migration of lithium polysulfides (LiPS) will lead to undesired shuttle effects and poor cycle life, all of which will hamper the large scale application of Li-S batteries. [7][8][9] In the view of the above problems, scientists have done a lot of exploration on improving the reaction dynamics. A series of carbon materials, such as meso/ microporous carbon, carbon nanotubes and graphene, are widely used to remission the shuttle effect of Li-S batteries, which can provide conductive framework, alleviate the volume change of electrodes, and physically constrain LiPS. [10] However, the physical encapsulation of the nonpolar carbon-based sulfur host is not effective enough to restrain the shuttle effect. A common practice in the research of Li-S batteries is the adoption of different catalysts to boost its conversion chemistry. An effective way to solve this problem is to use polar metal compounds, such as transition metal oxides, [11][12][13] nitride [14] and sulfides, [15][16][17] to improve the hydrophobic interface of carbon materials and provide extra chemical adsorption effect. Transition metal sulfides, such as CoS 2 , MoS 2 and VS 4 , are most welcomed catalysts, which not only possess good conductivity and intensive affinity for LiPS, but also show great potential in LiPS adsorption and catalysis effect for the key reactions of Li-S battery. [18] Various catalysts are adopted to boost the conversion chemistry of Lithium sulfur (Li-S) batteries, but most of them are electrochemical-active in a working Li-S cell, and the changes of their chemical state and the induced influence toward the Li-S catalytic mechanism are unclear. Herein, a dynamic catalytic mechanism is proposed by the selection of Li + -interaction-reversible VS 2 catalyst as a representative species to address this issue. The VS 2 catalyst with ultrastable Li + intercalation/deintercalation characteristics, fast charge transport capability, and active capacity contribution can provide a strong and dynamic chemisorption toward polysulfide (LiPS). The resulting Li-S batteries exhibit excellent cyclability at 3 C with capacity attenuation of 81.23% over 250 cycles and good rate capability up to 8 C. Moreover, a new insight toward the dynamic catalytic changes induced by the prominent Li + intercalation process of metal sulfide is proposed, which can provide more opportunities for the evolutional design for Li-S catalysts.

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Addressing the Prominent Li⁺ Intercalation Process of Metal Sulfide Catalyst in Li‐S Batteries

Wang

Yang

et al. 2022

Adv Materials Inter

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A Self‐Healing Flexible Quasi‐Solid Zinc‐Ion Battery Using All‐In‐One Electrodes

et al. 2021

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Self-healing and flexibility are significant for many emerging applications of secondary batteries, which have attracted broad attention. Herein, a self-healing flexible quasi-solid Zn-ion battery composing of flexible all-in-one cathode (VS 2 nanosheets growing on carbon cloth) and anode (electrochemically deposited Zn nanowires), and a self-healing hydrogel electrolyte, is presented. The free-standing all-in-one electrodes enable a high capacity and robust structure during flexible transformation of the battery, and the hydrogel electrolyte possesses a good self-healing performance. The presented battery remains as a high retention potential even after healing from being cut into six pieces. When bending at 60°, 90°, and 180°, the battery capacities remain 124, 125, and 114 mAh g −1 , respectively, cycling at a current density of 50 mA g −1 . Moreover, after cutting and healing twice, the battery still delivers a stable capacity, indicating a potential use of self-healing and wearable electronics.

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A Review on the Current Progress and Challenges of 2D Layered Transition Metal Dichalcogenides as Li/Na‐ion Battery Anodes

2021

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and pursued her research for 4 years. Afterwards, she joined as Research Assistant in DST funded project at Centre for Advanced Studies, Dr APJ AKTU, Lucknow in 2019.Her Research Interest mainly focuses on designing of micro-and nano-devices, microand nano-structured materials for various sensors and energy storage devices. Tata Narasinga Rao received his Ph.D. degree in Chemistry from Banaras Hindu University, India in 1994. After working at IIT Madras as Research Associate, he moved to the University of Tokyo in 1996 as a JSPS post-doctoral fellow and subsequently became lecturer in the same university in 2001. He joined International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad, India, in 2003 as senior scientist, and presently he is Scientist G and Associate Director of ARCI. His primary research area includes development of Li-/Na-ion battery, Li-S battery, supercapacitors. He is presently working on nano-coated self-disinfecting masks and antiviral-paints.

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Hollow Structure VS₂@Reduced Graphene Oxide (RGO) Architecture for Enhanced Sodium‐Ion Battery Performance

Cited by 23 publications

References 57 publications

Addressing the Prominent Li⁺ Intercalation Process of Metal Sulfide Catalyst in Li‐S Batteries

Addressing the Prominent Li⁺ Intercalation Process of Metal Sulfide Catalyst in Li‐S Batteries

A Self‐Healing Flexible Quasi‐Solid Zinc‐Ion Battery Using All‐In‐One Electrodes

A Review on the Current Progress and Challenges of 2D Layered Transition Metal Dichalcogenides as Li/Na‐ion Battery Anodes

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Hollow Structure VS2@Reduced Graphene Oxide (RGO) Architecture for Enhanced Sodium‐Ion Battery Performance

Cited by 23 publications

References 57 publications

Addressing the Prominent Li+ Intercalation Process of Metal Sulfide Catalyst in Li‐S Batteries

Addressing the Prominent Li+ Intercalation Process of Metal Sulfide Catalyst in Li‐S Batteries

A Self‐Healing Flexible Quasi‐Solid Zinc‐Ion Battery Using All‐In‐One Electrodes

A Review on the Current Progress and Challenges of 2D Layered Transition Metal Dichalcogenides as Li/Na‐ion Battery Anodes

Contact Info

Product

Resources

About

Hollow Structure VS₂@Reduced Graphene Oxide (RGO) Architecture for Enhanced Sodium‐Ion Battery Performance

Addressing the Prominent Li⁺ Intercalation Process of Metal Sulfide Catalyst in Li‐S Batteries

Addressing the Prominent Li⁺ Intercalation Process of Metal Sulfide Catalyst in Li‐S Batteries