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Items from 1 to 20 out of 313 results

article

A Highly Robust and Conducting Ultramicroporous 3D Fe(II)‐Based Metal–Organic Framework for Efficient Energy Storage

Soumen Khan, Santanu Chand, Pandiyan Sivasakthi, Pralok K. Samanta, more

Small > 20 > 33 > n/a - n/a

Exploitation of metal–organic framework (MOF) materials as active electrodes for energy storage or conversion is reasonably challenging owing to their poor robustness against various acidic/basic conditions and conventionally low electric conductivity. Keeping this in perspective, herein, a 3D ultramicroporous triazolate Fe‐MOF (abbreviated as Fe‐MET) is judiciously employed using cheap and commercially...

article

Electrochemical Capacitance Traces with Interlayer Spacing in Two‐dimensional Conductive Metal–Organic Frameworks

Alice Y. Su, Petru Apostol, Jiande Wang, Alexandru Vlad, more

Angewandte Chemie International Edition > 63 > 18 > n/a - n/a

Electrically conductive metal–organic frameworks (MOFs) are promising candidates for electrochemical capacitors (EC) for fast energy storage due to their high specific surface areas and potential for redox activity. To maximize energy density, traditional inorganic pseudocapacitors have utilized faradaic processes in addition to double‐layer capacitance. Although conductive MOFs are usually comprised...

article

Electrochemical Capacitance Traces with Interlayer Spacing in Two‐dimensional Conductive Metal–Organic Frameworks

Alice Y. Su, Petru Apostol, Jiande Wang, Alexandru Vlad, more

Angewandte Chemie > 136 > 18 > n/a - n/a

article

Stereolithography 3D Printed Carbon Microlattices with Hierarchical Porosity for Structural and Functional Applications

Akira Kudo, Kazuya Kanamaru, Jiuhui Han, Rui Tang, more

Small > 19 > 47 > n/a - n/a

Hierarchically porous carbon microlattices (HPCMLs) fabricated by using a composite photoresin and stereolithography (SLA) 3D printing is reported. Containing magnesium oxide nanoparticles (MgO NPs) as porogens and multilayer graphene nanosheets as UV‐scattering inhibitors, the composite photoresin is formed to simple cubic microlattices with digitally designed porosity of 50%. After carbonization...

article

Electrochemical Capacitors with Confined Redox Electrolytes and Porous Electrodes

Nianjun Yang, Siyu Yu, Wenjun Zhang, Hui‐Ming Cheng, more

Advanced Materials > 34 > 34 > n/a - n/a

Electrochemical capacitors (ECs), including electrical‐double‐layer capacitors and pseudocapacitors, feature high power densities but low energy densities. To improve the energy densities of ECs, redox electrolyte‐enhanced ECs (R‐ECs) or supercapbatteries are designed through employing confined soluble redox electrolytes and porous electrodes. In R‐ECs the energy storage is based on diffusion‐controlled...

article

Interfacial Polymetallic Oxides and Hierarchical Porous Core–Shell Fibres for High Energy‐Density Electrochemical Supercapacitors

Guan Wu, Ziyang Ma, Xingjiang Wu, Xiaolin Zhu, more

Angewandte Chemie International Edition > 61 > 27 > n/a - n/a

Realizing high energy‐density and actual applications of fibre‐based electrochemical supercapacitors (FESCs) are pivotal but challenging, as the ability to construct advanced fibres for accelerating charges kinetic diffusion and Faradaic storage remain key bottlenecks. Here, we demonstrate high‐performance FESCs based on hetero‐structured polymetallic oxides/porous graphene core–sheath fibres, where...

article

Interfacial Polymetallic Oxides and Hierarchical Porous Core–Shell Fibres for High Energy‐Density Electrochemical Supercapacitors

Guan Wu, Ziyang Ma, Xingjiang Wu, Xiaolin Zhu, more

Angewandte Chemie > 134 > 27 > n/a - n/a

article

Ultrafast Electrochemical Capacitors with Carbon Related Materials as Electrodes for AC Line Filtering

Shichen Xu, Mingmao Wu, Jin Zhang

Chemistry – A European Journal > 28 > 31 > n/a - n/a

High‐frequency responsive electrochemical capacitors (ECs), which can directly convert alternating current (AC) to direct current (DC), are getting more essential for the rapid development of electronic devices. In order to satisfy the requirements of ECs with fast rate capability and appreciable capacitance density, numerous efforts have been made towards the preparation and design of the electrode...

article

Frontispiece: Ultrafast Electrochemical Capacitors with Carbon Related Materials as Electrodes for AC Line Filtering

Shichen Xu, Mingmao Wu, Jin Zhang

Chemistry – A European Journal > 28 > 31 > n/a - n/a

New electronic devices require high‐frequency responsive electrochemical capacitors, and the appreciable capacitance density and a fast rate capability, which depend greatly on the electrode material. For more details of the latest advances in the design and controllable fabrication of carbon‐related electrode materials, such as planar 2D, random 3D, and vertical carbon materials, see the Concept...

article

The Emerging Electrochemical Activation Tactic for Aqueous Energy Storage: Fundamentals, Applications, and Future

Jian Peng, Wang Zhang, Shun Wang, Yang Huang, more

Advanced Functional Materials > 32 > 17 > n/a - n/a

The exploration of facile, low‐cost, and universal synthetic strategies for high‐performance aqueous energy storage is extremely urgent. The electrochemical activation tactic is an emerging synthetic technique that can turn inert or weakly active substances into highly active materials for aqueous energy storage via in situ or ex situ electrochemical treatment, which is receiving increasing attention...

article

Three‐dimensional mesostructured single crystalline Fe₃O₄ for ultrafast electrochemical capacitor electrode with AC line filtering performance

Jin Gu Kang, Minjeong Kim, Pa Do Kim, Byeong‐Kwon Ju, more

International Journal of Energy Research > 46 > 3 > 3490 - 3501

Epitaxial growth of three‐dimensional (3D) architectures has led to new opportunities in the optoelectronic devices and nanoscale thermal engineering. The feature that makes these materials distinct is to form a complex geometry while preserving crystal epitaxy. This enables to exploit functionalities given by 3D interconnected pores and suppress charge trapping at defects. One technology that finds...

article

Dual‐Ion Intercalation and High Volumetric Capacitance in a Two‐Dimensional Non‐Porous Coordination Polymer

Harish Banda, Jin‐Hu Dou, Tianyang Chen, Yugang Zhang, more

Angewandte Chemie International Edition > 60 > 52 > 27119 - 27125

Intercalation is a promising ion‐sorption mechanism for enhancing the energy density of electrochemical capacitors (ECs) because it offers enhanced access to the electrochemical surface area. It requires a rapid transport of ions in and out of a host material, and it must occur without phase transformations. Materials that fulfil these requirements are rare; those that do intercalate almost exclusively...

article

Dual‐Ion Intercalation and High Volumetric Capacitance in a Two‐Dimensional Non‐Porous Coordination Polymer

Harish Banda, Jin‐Hu Dou, Tianyang Chen, Yugang Zhang, more

Angewandte Chemie > 133 > 52 > 27325 - 27331

article

Electrochemical Capacitor Performance of Nanotextured Carbon/Transition Metal Dichalcogenides Composites (Small 48/2021)

Elżbieta Frąckowiak, Masoud Foroutan Koudahi, Maciej Tobis

Small > 17 > 48 > n/a - n/a

Transition Metal Dichalcogenides Transition metal dichalcogenides (sulfides) have a layered structure. ReS₂ and FeS₂ in the form of composites with carbon nanotubes and 3D graphene (3DG)‐like material are used as electrochemical capacitor electrodes. Sulfates (Li, Na) serve as electrolytic medium. Catalytic effect of Re for hydrogen evolution reaction plays a crucial role in limiting capacitor voltage...

article

Electrochemical Capacitor Performance of Nanotextured Carbon/Transition Metal Dichalcogenides Composites

Elżbieta Frąckowiak, Masoud Foroutan Koudahi, Maciej Tobis

Small > 17 > 48 > n/a - n/a

Transition metal dichalcogenides (TMDs) are emerging low‐dimensional materials with potential applications for electrochemical capacitors (EC). Here, physicochemical and electrochemical characterizations of carbon composites with two sulfides ReS₂ and FeS₂ are reported. To enhance conductivity, multiwalled carbon nanotubes (NTs) serve as a support for ReS₂ while 3D graphene‐like network (3DG) is utilized...

article

Covalently Aligned Molybdenum Disulfide–Carbon Nanotubes Heteroarchitecture for High‐Performance Electrochemical Capacitors

Xingjiang Wu, Xiaolin Zhu, Houyu Tao, Guan Wu, more

Angewandte Chemie International Edition > 60 > 39 > 21295 - 21303

Advanced two‐dimensional nanosheets that promote the dynamic transportation and storage capacity of ions are significant for high‐performance electrochemical capacitors (ECs). However, such materials often possess a low energy density. We have developed an ordered heteroarchitecture of molybdenum disulfide‐carbon nanotubes (MoS₂‐CNTs) in which CNTs are vertically grafted within a MoS₂ framework by...

article

Frontispiece: Covalently Aligned Molybdenum Disulfide–Carbon Nanotubes Heteroarchitecture for High‐Performance Electrochemical Capacitors

Xingjiang Wu, Xiaolin Zhu, Houyu Tao, Guan Wu, more

Angewandte Chemie International Edition > 60 > 39 > n/a - n/a

Energy Storage In their Research Article on page 21295, Guan Wu, Jianhong Xu, Ningzhong Bao et al. report a covalently aligned MoS₂–carbon nanotube architecture for high‐performance electrochemical capacitors.

article

Covalently Aligned Molybdenum Disulfide–Carbon Nanotubes Heteroarchitecture for High‐Performance Electrochemical Capacitors

Xingjiang Wu, Xiaolin Zhu, Houyu Tao, Guan Wu, more

Angewandte Chemie > 133 > 39 > 21465 - 21473

article

Frontispiz: Covalently Aligned Molybdenum Disulfide–Carbon Nanotubes Heteroarchitecture for High‐Performance Electrochemical Capacitors

Xingjiang Wu, Xiaolin Zhu, Houyu Tao, Guan Wu, more

Angewandte Chemie > 133 > 39 > n/a - n/a

Energiespeicherung Im Forschungsartikel auf S. 21465 berichten Guan Wu, Jianhong Xu, Ningzhong Bao et al. über eine kovalent ausgerichtete MoS₂‐Kohlenstoffnanoröhren‐Architektur für elektrochemische Hochleistungskondensatoren.

article

Monte Carlo‐based sensitivity analysis of an electrochemical capacitor

Vishvak Kannan, Karthik Somasundaram, Adrian Fisher, Erik Birgersson

International Journal of Energy Research > 45 > 11 > 16947 - 16962

The operation of electrochemical capacitors depends not only on extrinsic operating and design parameters, but also intrinsic physical, material, and electrochemical parameters. Fluctuations in these stochastic parameters can significantly influence the performance and may lead to quicker degradation of the electrochemical capacitors, thereby affecting their durability and reliability. Thus, it is...

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A Highly Robust and Conducting Ultramicroporous 3D Fe(II)‐Based Metal–Organic Framework for Efficient Energy Storage

Electrochemical Capacitance Traces with Interlayer Spacing in Two‐dimensional Conductive Metal–Organic Frameworks

Electrochemical Capacitance Traces with Interlayer Spacing in Two‐dimensional Conductive Metal–Organic Frameworks

Stereolithography 3D Printed Carbon Microlattices with Hierarchical Porosity for Structural and Functional Applications

Electrochemical Capacitors with Confined Redox Electrolytes and Porous Electrodes

Interfacial Polymetallic Oxides and Hierarchical Porous Core–Shell Fibres for High Energy‐Density Electrochemical Supercapacitors

Interfacial Polymetallic Oxides and Hierarchical Porous Core–Shell Fibres for High Energy‐Density Electrochemical Supercapacitors

Ultrafast Electrochemical Capacitors with Carbon Related Materials as Electrodes for AC Line Filtering

Frontispiece: Ultrafast Electrochemical Capacitors with Carbon Related Materials as Electrodes for AC Line Filtering

The Emerging Electrochemical Activation Tactic for Aqueous Energy Storage: Fundamentals, Applications, and Future

Three‐dimensional mesostructured single crystalline Fe₃O₄ for ultrafast electrochemical capacitor electrode with AC line filtering performance

Dual‐Ion Intercalation and High Volumetric Capacitance in a Two‐Dimensional Non‐Porous Coordination Polymer

Dual‐Ion Intercalation and High Volumetric Capacitance in a Two‐Dimensional Non‐Porous Coordination Polymer

Electrochemical Capacitor Performance of Nanotextured Carbon/Transition Metal Dichalcogenides Composites (Small 48/2021)

Electrochemical Capacitor Performance of Nanotextured Carbon/Transition Metal Dichalcogenides Composites

Covalently Aligned Molybdenum Disulfide–Carbon Nanotubes Heteroarchitecture for High‐Performance Electrochemical Capacitors

Frontispiece: Covalently Aligned Molybdenum Disulfide–Carbon Nanotubes Heteroarchitecture for High‐Performance Electrochemical Capacitors

Covalently Aligned Molybdenum Disulfide–Carbon Nanotubes Heteroarchitecture for High‐Performance Electrochemical Capacitors

Frontispiz: Covalently Aligned Molybdenum Disulfide–Carbon Nanotubes Heteroarchitecture for High‐Performance Electrochemical Capacitors

Monte Carlo‐based sensitivity analysis of an electrochemical capacitor

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