Results 101 to 110 of about 40,011 (297)

A Flexible Supercapacitor with High True Performance

open access: yesiScience, 2018
Summary: The demand for better “true performance” of supercapacitors, which is defined as the energy density based on the packaged cell with high active mass loading, is spurred by the ever-increasing energy storage market.
Zhonghua Ren, Yuanji Li, Jie Yu
doaj   +1 more source

An Energy Autonomous Microneedle Array‐Based Sensing System for Continuous Biomarker Monitoring

open access: yesAdvanced Science, EarlyView.
This work presents an innovative self‐powered wearable biosensor system for real‐time monitoring of multiple biomarkers in interstitial fluid. The device integrates stainless steel‐based minimally invasive microneedles with ion‐selective membranes, enabling simultaneous Na+, K+, Ca2+, pH, and glucose detection.
Arnab Pal   +9 more
wiley   +1 more source

Design of an AC/DC Converter with using Supercapacitors as Energy Storage

open access: yesRMUTL Engineering Journal, 2016
This paper presents a design of a high power factor AC/DC converter with using supercapacitors as energy storage.The proposed system consists of a cuk topology based AC/DC power converter and a bidirectional DC/DC converter which is connected between the
พิสิทธิ วิสุทธิเมธีกร   +1 more
doaj  

Biomass‐Derived Carbon and Their Composites for Supercapacitor Applications: Sources, Functions, and Mechanisms

open access: yesEcoEnergy
Biomass‐derived carbons are eco‐friendly and sustainable materials, making them ideal for supercapacitors due to their high surface area, excellent conductivity, cost‐effectiveness, and environmental benefits.
Xi Zhu   +5 more
doaj   +1 more source

Analysis on Supercapacitor Assisted Low Dropout (SCALDO) Regulators

open access: yes, 2014
State-of-the-art electronic systems employ three fundamental techniques for DC-DC converters: (a) switch-mode power supplies (SMPS); (b) linear power supplies; (c) switched capacitor (charge pump) converters.
Gunawardane, Kalpani Kosala
core  

K+‐Triggered Defect Engineering and Proton‐Coupled Storage in V2O5·nH2O for Advanced Zn‐Ion Thin‐Film and Microbatteries

open access: yesAdvanced Science, EarlyView.
K+ pre‐intercalation in V2O5·nH2O induces interlayer contraction, oxygen‐vacancy formation, and mixed‐valence states, activating defect‐mediated proton‐dominated transport. This enables cooperative H+/Zn2+ storage with enhanced kinetics and stability. The resulting Zn‐based thin‐film and microbatteries deliver high areal energy and capacity, offering a
Jingli Luo   +14 more
wiley   +1 more source

Flexible Supercapacitors: A Materials Perspective

open access: yesFrontiers in Materials, 2019
Flexible supercapacitors are highly attractive for the large number of emerging portable lightweight consumer devices. The novelty of a flexible supercapacitor is the incorporation of flexible electrode or substrate material to combine structural ...
Soubantika Palchoudhury   +3 more
doaj   +1 more source

Synergistic 3D Porous Architectures and Halogen Redox Chemistry for High‐Energy and High‐Power Microbatteries

open access: yesAdvanced Science, EarlyView.
3D porous Ni scaffolds with PANI cathode, Zn anode, and halogen redox chemistry synergistically enhance on‐chip microbattery performance by improving active material loading, Zn2+ diffusion, and charge‐transfer kinetics. The resulting 3D Zn//I2 microbatteries deliver high areal capacity, high energy and power density, and excellent cycling stability ...
Yijia Zhu   +6 more
wiley   +1 more source

Transforming biomass into engineered biochar materials for high-performance supercapacitors: Recent advances, challenges, and prospects

open access: yes能源环境保护
Supercapacitors are widely considered as advanced energy storage devices with vast development prospects due to their excellent properties, including high specific energy and good cyclic stability.
Ruibo FAN   +6 more
doaj   +1 more source

A Pore or not a Pore? Understanding Pore Size Distributions of Non‐Graphitic Carbon and Atomically‐Dispersed M‐N‐C Materials

open access: yesAdvanced Science, EarlyView.
Gassorption analysis of in‐plane functionalized carbons reveals small, uniform ultramicropore signatures as potential artefacts of specific adsorption of the probe gases. Low‐pressure Langmuir fitting links these features to distinct functionalities via adsorption energies, enabling straightforward quantification of otherwise inaccessible surface‐site ...
Simon W. J. Dietzmann   +9 more
wiley   +1 more source

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