The Experts below are selected from a list of 17940 Experts worldwide ranked by ideXlab platform
Zhaohua Wang - One of the best experts on this subject based on the ideXlab platform.
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carbon nanofiber elastically confined nanoflowers a highly efficient design for molybdenum disulfide based Flexible anodes toward fast sodium storage
ACS Applied Materials & Interfaces, 2019Co-Authors: Ying Bai, Guanghai Chen, Haixia Ren, Shuainan Guo, Zhaohua WangAbstract:Two-dimensional energy materials have been widely applied in advanced secondary batteries, among which molybdenum sulfide (MoS2) is attractive because of the potential for high capacity and good rate performance. The relatively low electronic conductivity and irreversible volume expansion of pure MoS2 still need to be improved. Here, a facile and highly efficient ex situ electrospinning technique is developed to design the carbon nanofiber elastically confined MoS2 nanoflowers Flexible Electrode. The Flexible freestanding Electrode exhibits enhanced electronic conductivities and ionic diffusion coefficients, leading to a remarkable high specific capacity (596 mA h g-1 at a current density of 50 mA g-1) and capacity retention (with 89% capacity retention after 1100 cycles at 1 A g-1). This novel idea underscores the potential importance of fabricating various Flexible devices other than the sodium-ion battery.
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Carbon Nanofiber Elastically Confined Nanoflowers: A Highly Efficient Design for Molybdenum Disulfide-Based Flexible Anodes Toward Fast Sodium Storage
2019Co-Authors: Ying Bai, Guanghai Chen, Haixia Ren, Shuainan Guo, Zhaohua WangAbstract:Two-dimensional energy materials have been widely applied in advanced secondary batteries, among which molybdenum sulfide (MoS2) is attractive because of the potential for high capacity and good rate performance. The relatively low electronic conductivity and irreversible volume expansion of pure MoS2 still need to be improved. Here, a facile and highly efficient ex situ electrospinning technique is developed to design the carbon nanofiber elastically confined MoS2 nanoflowers Flexible Electrode. The Flexible freestanding Electrode exhibits enhanced electronic conductivities and ionic diffusion coefficients, leading to a remarkable high specific capacity (596 mA h g–1 at a current density of 50 mA g–1) and capacity retention (with 89% capacity retention after 1100 cycles at 1 A g–1). This novel idea underscores the potential importance of fabricating various Flexible devices other than the sodium-ion battery
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3d electronic channels wrapped large sized na3v2 po4 3 as Flexible Electrode for sodium ion batteries
Small, 2018Co-Authors: Ying Bai, Liming Ling, Guanghai Chen, Zhaohua Wang, Haixia RenAbstract:The development of portable and wearable electronics has aroused the increasing demand for Flexible energy-storage devices, especially for the characteristics of high energy density, excellent mechanical properties, simple synthesis process, and low cost. However, the development of Flexible Electrodes for sodium-ion batteries (SIBs) is still limited due to the intricate production methods and the relatively high-cost of current collectors such as graphene/graphene oxide and carbon nanotubes. Here, the hierarchical 3D electronic channels wrapped large-sized Na3 V2 (PO4 )3 is designed and fabricated by a simple electrospinning technique. As Flexible Electrode material, it exhibits outstanding electrolyte wettability, together with ultrafast electronic conductivity and high Na-ion diffusion coefficients for SIBs, leading to superior electrochemical performances. A high reversible specific capacity of 116 mA h g-1 (nearly 99% of the theoretical specific capacities) can be obtained at the current density of 0.1 C. Even after a 300-fold current density increased (30 C), the discharge specific capacity of the Flexible Electrode still remains 63 mA h g-1 . Such an effective concept of fabricating 3D electronic channels for large-sized particles is expected to accelerate the practical applications of Flexible batteries at various systems.
Xiangyan Shen - One of the best experts on this subject based on the ideXlab platform.
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hydrogen substituted graphdiyne as carbon rich Flexible Electrode for lithium and sodium ion batteries
Nature Communications, 2017Co-Authors: Ning Wang, Zili Cui, Changshui Huang, Ze Yang, Xiangyan ShenAbstract:Organic Electrodes are potential alternatives to current inorganic Electrode materials for lithium ion and sodium ion batteries powering portable and wearable electronics, in terms of their mechanical flexibility, function tunability and low cost. However, the low capacity, poor rate performance and rapid capacity degradation impede their practical application. Here, we concentrate on the molecular design for improved conductivity and capacity, and favorable bulk ion transport. Through an in situ cross-coupling reaction of triethynylbenzene on copper foil, the carbon-rich frame hydrogen substituted graphdiyne film is fabricated. The organic film can act as free-standing Flexible Electrode for both lithium ion and sodium ion batteries, and large reversible capacities of 1050 mAh g-1 for lithium ion batteries and 650 mAh g-1 for sodium ion batteries are achieved. The Electrode also shows a superior rate and cycle performances owing to the extended π-conjugated system, and the hierarchical pore bulk with large surface area.
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hydrogen substituted graphdiyne as carbon rich Flexible Electrode for lithium and sodium ion batteries
Nature Communications, 2017Co-Authors: Ning Wang, Zili Cui, Changshui Huang, Ze Yang, Xiangyan ShenAbstract:Organic Electrodes are potential alternatives to current inorganic Electrode materials for lithium ion and sodium ion batteries powering portable and wearable electronics, in terms of their mechanical flexibility, function tunability and low cost. However, the low capacity, poor rate performance and rapid capacity degradation impede their practical application. Here, we concentrate on the molecular design for improved conductivity and capacity, and favorable bulk ion transport. Through an in situ cross-coupling reaction of triethynylbenzene on copper foil, the carbon-rich frame hydrogen substituted graphdiyne film is fabricated. The organic film can act as free-standing Flexible Electrode for both lithium ion and sodium ion batteries, and large reversible capacities of 1050 mAh g−1 for lithium ion batteries and 650 mAh g−1 for sodium ion batteries are achieved. The Electrode also shows a superior rate and cycle performances owing to the extended π-conjugated system, and the hierarchical pore bulk with large surface area. Flexible batteries have been used to power wearable smart electronics and implantable medical devices. Here, the authors report a carbon-rich Flexible hydrogen substituted graphdiyne Electrode exhibiting superior electrochemical performance in lithium and sodium ion batteries.
Hui-ming Cheng - One of the best experts on this subject based on the ideXlab platform.
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Carbon Nanotubes and Graphene for Flexible Electrochemical Energy Storage: from Materials to Devices
Advanced Materials, 2016Co-Authors: Lei Wen, Feng Li, Hui-ming ChengAbstract:Flexible electrochemical energy storage (FEES) devices have received great attention as a promising power source for the emerging field of Flexible and wearable electronic devices. Carbon nanotubes (CNTs) and graphene have many excellent properties that make them ideally suited for use in FEES devices. A brief definition of FEES devices is provided, followed by a detailed overview of various structural models for achieving different FEES devices. The latest research developments on the use of CNTs and graphene in FEES devices are summarized. Finally, future prospects and important research directions in the areas of CNT- and graphene-based Flexible Electrode synthesis and device integration are discussed.
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a self standing and Flexible Electrode of li4ti5o12 nanosheets with a n doped carbon coating for high rate lithium ion batteries
Advanced Functional Materials, 2013Co-Authors: Guangmin Zhou, Lei Wen, Hui-ming ChengAbstract:Flexible energy-storage devices have attracted growing attention with the fast development of bendable electronic systems. Thus, the search for reliable Electrodes with both high mechanical flexibility and excellent electron and lithium-ion conductivity has become an urgent task. Carbon-coated nanostructures of Li4Ti5O12 (LTO) have important applications in high-performance lithium ion batteries (LIBs). However, these materials still need to be mixed with a binder and carbon black and pressed onto metal substrates or, alternatively, by be deposited onto a conductive substrate before they are assembled into batteries, which makes the batteries less Flexible and have a low energy density. Herein, a simple and scalable process to fabricate LTO nanosheets with a N-doped carbon coating is reported. This can be assembled into a film which can be used as a binder-free and Flexible Electrode for LIBs that does not require any current collectors. Such a Flexible Electrode has a long life. More significantly, it exhibits an excellent rate capability due to the thin carbon coating and porous nanosheet structures, which produces a highly conductive pathway for electrons and fast transport channels for lithium ions.
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fabrication of graphene polyaniline composite paper via in situ anodic electropolymerization for high performance Flexible Electrode
ACS Nano, 2009Co-Authors: Dawei Wang, Feng Li, Jinping Zhao, Zhigang Chen, Zhongshuai Wu, Ian R Gentle, G Q Lu, Hui-ming ChengAbstract:Freestanding and Flexible graphene/polyaniline composite paper was prepared by an in situ anodic electropolymerization of polyaniline film on graphene paper. This graphene-based composite paper Electrode, consisting of graphene/polyaniline composite sheets as building blocks, shows a favorable tensile strength of 12.6 MPa and a stable large electrochemical capacitance (233 F g−1 and 135 F cm−3 for gravimetric and volumetric capacitances), which outperforms many other currently available carbon-based Flexible Electrodes and is hence particularly promising for Flexible supercapacitors.
Ying Bai - One of the best experts on this subject based on the ideXlab platform.
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carbon nanofiber elastically confined nanoflowers a highly efficient design for molybdenum disulfide based Flexible anodes toward fast sodium storage
ACS Applied Materials & Interfaces, 2019Co-Authors: Ying Bai, Guanghai Chen, Haixia Ren, Shuainan Guo, Zhaohua WangAbstract:Two-dimensional energy materials have been widely applied in advanced secondary batteries, among which molybdenum sulfide (MoS2) is attractive because of the potential for high capacity and good rate performance. The relatively low electronic conductivity and irreversible volume expansion of pure MoS2 still need to be improved. Here, a facile and highly efficient ex situ electrospinning technique is developed to design the carbon nanofiber elastically confined MoS2 nanoflowers Flexible Electrode. The Flexible freestanding Electrode exhibits enhanced electronic conductivities and ionic diffusion coefficients, leading to a remarkable high specific capacity (596 mA h g-1 at a current density of 50 mA g-1) and capacity retention (with 89% capacity retention after 1100 cycles at 1 A g-1). This novel idea underscores the potential importance of fabricating various Flexible devices other than the sodium-ion battery.
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Carbon Nanofiber Elastically Confined Nanoflowers: A Highly Efficient Design for Molybdenum Disulfide-Based Flexible Anodes Toward Fast Sodium Storage
2019Co-Authors: Ying Bai, Guanghai Chen, Haixia Ren, Shuainan Guo, Zhaohua WangAbstract:Two-dimensional energy materials have been widely applied in advanced secondary batteries, among which molybdenum sulfide (MoS2) is attractive because of the potential for high capacity and good rate performance. The relatively low electronic conductivity and irreversible volume expansion of pure MoS2 still need to be improved. Here, a facile and highly efficient ex situ electrospinning technique is developed to design the carbon nanofiber elastically confined MoS2 nanoflowers Flexible Electrode. The Flexible freestanding Electrode exhibits enhanced electronic conductivities and ionic diffusion coefficients, leading to a remarkable high specific capacity (596 mA h g–1 at a current density of 50 mA g–1) and capacity retention (with 89% capacity retention after 1100 cycles at 1 A g–1). This novel idea underscores the potential importance of fabricating various Flexible devices other than the sodium-ion battery
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3d electronic channels wrapped large sized na3v2 po4 3 as Flexible Electrode for sodium ion batteries
Small, 2018Co-Authors: Ying Bai, Liming Ling, Guanghai Chen, Zhaohua Wang, Haixia RenAbstract:The development of portable and wearable electronics has aroused the increasing demand for Flexible energy-storage devices, especially for the characteristics of high energy density, excellent mechanical properties, simple synthesis process, and low cost. However, the development of Flexible Electrodes for sodium-ion batteries (SIBs) is still limited due to the intricate production methods and the relatively high-cost of current collectors such as graphene/graphene oxide and carbon nanotubes. Here, the hierarchical 3D electronic channels wrapped large-sized Na3 V2 (PO4 )3 is designed and fabricated by a simple electrospinning technique. As Flexible Electrode material, it exhibits outstanding electrolyte wettability, together with ultrafast electronic conductivity and high Na-ion diffusion coefficients for SIBs, leading to superior electrochemical performances. A high reversible specific capacity of 116 mA h g-1 (nearly 99% of the theoretical specific capacities) can be obtained at the current density of 0.1 C. Even after a 300-fold current density increased (30 C), the discharge specific capacity of the Flexible Electrode still remains 63 mA h g-1 . Such an effective concept of fabricating 3D electronic channels for large-sized particles is expected to accelerate the practical applications of Flexible batteries at various systems.
Haixia Ren - One of the best experts on this subject based on the ideXlab platform.
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carbon nanofiber elastically confined nanoflowers a highly efficient design for molybdenum disulfide based Flexible anodes toward fast sodium storage
ACS Applied Materials & Interfaces, 2019Co-Authors: Ying Bai, Guanghai Chen, Haixia Ren, Shuainan Guo, Zhaohua WangAbstract:Two-dimensional energy materials have been widely applied in advanced secondary batteries, among which molybdenum sulfide (MoS2) is attractive because of the potential for high capacity and good rate performance. The relatively low electronic conductivity and irreversible volume expansion of pure MoS2 still need to be improved. Here, a facile and highly efficient ex situ electrospinning technique is developed to design the carbon nanofiber elastically confined MoS2 nanoflowers Flexible Electrode. The Flexible freestanding Electrode exhibits enhanced electronic conductivities and ionic diffusion coefficients, leading to a remarkable high specific capacity (596 mA h g-1 at a current density of 50 mA g-1) and capacity retention (with 89% capacity retention after 1100 cycles at 1 A g-1). This novel idea underscores the potential importance of fabricating various Flexible devices other than the sodium-ion battery.
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Carbon Nanofiber Elastically Confined Nanoflowers: A Highly Efficient Design for Molybdenum Disulfide-Based Flexible Anodes Toward Fast Sodium Storage
2019Co-Authors: Ying Bai, Guanghai Chen, Haixia Ren, Shuainan Guo, Zhaohua WangAbstract:Two-dimensional energy materials have been widely applied in advanced secondary batteries, among which molybdenum sulfide (MoS2) is attractive because of the potential for high capacity and good rate performance. The relatively low electronic conductivity and irreversible volume expansion of pure MoS2 still need to be improved. Here, a facile and highly efficient ex situ electrospinning technique is developed to design the carbon nanofiber elastically confined MoS2 nanoflowers Flexible Electrode. The Flexible freestanding Electrode exhibits enhanced electronic conductivities and ionic diffusion coefficients, leading to a remarkable high specific capacity (596 mA h g–1 at a current density of 50 mA g–1) and capacity retention (with 89% capacity retention after 1100 cycles at 1 A g–1). This novel idea underscores the potential importance of fabricating various Flexible devices other than the sodium-ion battery
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3d electronic channels wrapped large sized na3v2 po4 3 as Flexible Electrode for sodium ion batteries
Small, 2018Co-Authors: Ying Bai, Liming Ling, Guanghai Chen, Zhaohua Wang, Haixia RenAbstract:The development of portable and wearable electronics has aroused the increasing demand for Flexible energy-storage devices, especially for the characteristics of high energy density, excellent mechanical properties, simple synthesis process, and low cost. However, the development of Flexible Electrodes for sodium-ion batteries (SIBs) is still limited due to the intricate production methods and the relatively high-cost of current collectors such as graphene/graphene oxide and carbon nanotubes. Here, the hierarchical 3D electronic channels wrapped large-sized Na3 V2 (PO4 )3 is designed and fabricated by a simple electrospinning technique. As Flexible Electrode material, it exhibits outstanding electrolyte wettability, together with ultrafast electronic conductivity and high Na-ion diffusion coefficients for SIBs, leading to superior electrochemical performances. A high reversible specific capacity of 116 mA h g-1 (nearly 99% of the theoretical specific capacities) can be obtained at the current density of 0.1 C. Even after a 300-fold current density increased (30 C), the discharge specific capacity of the Flexible Electrode still remains 63 mA h g-1 . Such an effective concept of fabricating 3D electronic channels for large-sized particles is expected to accelerate the practical applications of Flexible batteries at various systems.