Results 71 to 80 of about 5,095 (238)

Interfacial Charge‐Transfer Enhancement via High‐Entropy Alloy Regulated MXene Heterostructures for Asymmetric Supercapacitor Applications

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A novel core‐shell HEA@MXene composite was synthesized to enhance supercapacitor electrochemistry. DFT simulations reveal the role of HEA doping in regulating the MXene interface. The HEA@MXene composite exhibits a high specific capacitance of 872 F g−1 at 1 A g−1 with remarkable stability in 1 M KOH.
Fenhong Song, Ruibo Zhang, Wanlong Chu, Zengqiang Tan, Long Ma, Jing Fan, Gang Wang, Qi Qi, Yang Cao   +8 more
wiley   +1 more source

Pseudocapacitance contribution in boron-doped graphite sheets for anion storage enables high-performance sodium-ion capacitors

, 2018
The high pseudocapacitance contribution in boron-doped graphite sheets for anion storage is demonstrated, and then utilized to fabricate Na-ion hybrid capacitors.
Zaichun Liu, Faxing Wang, Deming Tan, Hongxia Wang, Renwu Zhou, Feng Yu   +5 more
core   +1 more source

Micro‐Scale Dual Interface Layer With N‐Coordination Encapsulated on Coralloid Si Anode for Lithium‐Ion Batteries

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
The Zr‐doped coralloid μSi encapsulated within an N‐coordinated dual‐carbon network is fabricated by an Al‐Si melt modification integrated with in‐situ interfacial strategy, consequently improving the ionic diffusion behaviors. Micro‐scale silicon (μSi) anodes are promising candidates for enhancing energy density of lithium‐ion batteries, yet their ...
Juxuan Ding, Jifei Sun, Boyuan Ban, Yunsheng Wu, Huishe Wang, Jian Chen   +5 more
wiley   +1 more source

Supercapacitors based on graphene/pseudocapacitive materials [PDF]

Journal of the Serbian Chemical Society, 2017
Composites of graphene and SnO2 were successfully prepared by a single step simultaneous synthesis of SnO2 and reduction of graphene oxide (GO). Three different compositions of precursor solution resulted in different composite materials containing graphene and SnO2. The reaction was realized by microwave-assisted hydrothermal synthesis.
Denis Sacer, Magdalena Kralj, Suzana Sopcic, Milica Kosevic, Aleksandar Dekanski, Marijana Rokovic-Kraljic   +5 more
openaire   +5 more sources

Balancing the electrical double layer capacitance and pseudocapacitance of hetero-atom doped carbon

, 2017
Capacitive performance of polypyrrole-derived carbon nanowires is optimized by tuning the ratio of electrical double layer capacitance to pseudocapacitance.
Xiao-Xia Liu, Yu Song, Yat Li, Zi-Hang Huang, Tian-Yu Liu   +4 more
core   +1 more source

Synergistic Regulation of Nitrogen-Doped Carbon Coating and Pseudocapacitive Kinetics in TiO₂ Nanofibers for Enhanced Sodium-Ion Storage

Molecules
Sodium-ion batteries (SIBs) represent a compelling alternative to lithium-ion batteries for grid-scale energy storage, owing to the high natural abundance and low cost of sodium resources, as well as their strategic alignment with national energy ...
Fei Guo, Liang Xie, Liangquan Wei, Jinmei Du, Shaohui Zhang, Yuanmiao Xie, Baosheng Liu   +6 more
doaj   +1 more source

Revealing Structure–Performance Relations in Core‐Shell Catalyst‐Based PEM Water Electrolyzer Anodes with Low Iridium Loading

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Table of Contents The TiO2@IrO2 core–shell architecture ensures high electronic conductivity even at a low iridium content of 10 wt%. The resulting catalyst layer shows significantly higher iridium utilization than a commercial reference, leading to improved PEMWE single‐cell performance at low iridium loading.
Selina Finger, Darius Hoffmeister, Tien‐Ching Ma, Lena Fiedler, A. Lucía Morales, Andreas Körner, Nico Roubicek, Leopold Lahn, Johannes Böhmer, Thomas Przybilla, Erdmann Spiecker, Olga Kasian, Anna T. S. Freiberg, Karl J. J. Mayrhofer, Simon Thiele, Chuyen van Pham, Andreas Hutzler   +16 more
wiley   +1 more source

Lithium storage mechanisms and kinetics in MOF-based anodes: from pristine frameworks to derived materials for high-performance lithium-ion batteries

Frontiers in Batteries and Electrochemistry
Metal-organic frameworks (MOFs) and their derivatives are found to be promising lithium-ion battery (LIB) anodes, yet their complex lithium storage mechanisms and kinetic behaviors remain insufficiently understood.
Dongfang Shi
doaj   +1 more source

Smart Functional Hydrogels: Emerging Platforms for Thermal and Electrochemical Energy Harvesting and Conversion Systems

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
The hydrogel exhibits versatile functions, including efficient thermogalvanic conversion under a temperature difference, and acting as a cooling layer/forming a thermally conductive nanoactive composite for thermovoltaic conversion. Additionally, its self‐healing and self‐powered flexibility play a key role in energy storage systems. The growing demand 
Eunah Kang
wiley   +1 more source

The Pseudocapacitive Nature of CoFe2O4 Thin Films

Electrochimica Acta, 2017
Abstract Nanostructured Cobalt ferrite (CoFe 2 O 4 ) thin films are fabricated by aerosol-assisted chemical vapour deposition (AACVD) and studied for application in supercapacitors. XRD and Raman spectroscopic analysis confirms the formation of single phase CoFe 2 O 4 .
Sagu, JS, Wijayantha, KGU, Tahir, AA
openaire   +2 more sources