Recent Advances of Flexible MXene and its Composites for Supercapacitors

Chemistry - A European Journal, Journal Year: 2024, Volume and Issue: 30(24)

Published: Feb. 1, 2024

Abstract MXenes have unique properties such as high electrical conductivity, excellent mechanical properties, rich surface chemistry, and convenient processability. These characteristics make them ideal for producing flexible materials with tunable microstructures. This paper reviews the laboratory research progress of MXene its composite supercapacitors. And introduces general synthesis method MXene, well preparation MXene. By analyzing current status, electrochemical reaction mechanism was explained from perspectives electrolyte terminating groups. review particularly emphasizes methods freestanding materials. The points out that biggest problem electrodes is severe self‐stacking, which reduces number chemically active sites, weakens ion accessibility, ultimately lowers performance. Therefore, it necessary to other electrode design a good microstructure. affirms enormous potential in field In addition, challenges possible improvements faced by based practical applications were also discussed.

Language: Английский

---

Dual-molecule enhanced MXene films for high specific capacitance in supercapacitors

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 641, P. 236895 - 236895

Published: April 2, 2025

Language: Английский

---

Lewis acid-etched MXene self-assembled with reduced graphene oxide for symmetrical supercapacitors with liquid/ solid electrolytes

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 978, P. 173480 - 173480

Published: Jan. 9, 2024

Language: Английский

---

Layer-by-layer assembled aramid nanofiber/MXene aerogel: Exceptional resistance to extreme temperatures and robust anisotropy for advanced applications

Composites Science and Technology, Journal Year: 2024, Volume and Issue: 257, P. 110833 - 110833

Published: Aug. 27, 2024

Language: Английский

---

Assembly of flexible Ti3C2Tx fiber with promoted ionic transport by constructing hierarchical flakes size for high-performance fiber shaped supercapacitors

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: 1014, P. 178613 - 178613

Published: Jan. 14, 2025

Language: Английский

---

Fabricaiton of MXene-TiO2-ZnO ternary composites for low temperature and low concentration H2 gas detection by one-step preparation

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

---

Sodium Dodecyl Sulfate-Adjusted Phase Composition of Hydrated Tungsten Oxides as Stable Self-Supporting Electrodes for Supercapacitors with High Volumetric Specific Capacitance

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 5, 2024

High pseudocapacitive activity of hydrated tungsten oxides (WO3·xH2O, x = 1 or 2) makes them promising materials for supercapacitors (SCs). During their synthesis, additives such as complexing agents and surfactants generally can only affect the morphology and/or size products. Here, we demonstrate that not WO3·xH2O were affected, its phase composition could also change from WO3·2H2O to WO3·H2O simply by increasing amount sodium dodecyl sulfate (SDS) during anodization synthesis. To best our knowledge, a phenomenon has been reported before. In addition, SDS introduced special structure products, i.e., nanoplatelets constructed nanoparticle multilayers with abundant nanogaps between multilayers, which further arranged into nanoflowers increased amounts SDS. Benefiting structure, low internal resistance, enhanced stability, fast redox kinetics, as-obtained WO3·xH2O/W-3 self-supporting electrode showed high volumetric specific capacitance 1402.92 F cm–3 good cycling stability (a capacity retention 106% after 10 000 cycles). an all-solid-state asymmetric SC device based on delivered energy density 44.0 mW h at 0.5 W cm–3. Our method demonstrates potential way fabricate excellent electrodes SCs.

Language: Английский

---

Fabrication strategies, applications and prospects of MXene titanium nitride (Tin+1NnTx): A mini review

Journal of Materials Research and Technology, Journal Year: 2024, Volume and Issue: 30, P. 6028 - 6038

Published: April 30, 2024

MXenes, as promising two-dimensional (2D) transition metal carbides or nitrides, are a new family of 2D materials. MXenes have superior electrical conductivity, unique accordion-like structure, excellent mechanical properties and abundant surface termination, which make them the preferred material for ever-growing market energy storage, adsorption, gas sensing other fields. As one typical representatives MXene family, Tin+1NnTx is notable due to its high specific capacitance, catalytic activity low precursor cost compared can be used clean storage catalysis applications. However, relatively little currently known about Tin+1NnTx, special review on synthesis, properties, applications has not been reported date. Herein, we overview introduce synthesis progress, application Tin+1NnTx. The major problems bottlenecks objectively dissected evaluated. In addition, future viewpoints research opportunities presented development advanced MXene-based

Language: Английский

---

Facile Preparation of Carbon Nanotubes/Cellulose Nanofibrils/Manganese Dioxide Nanowires Electrode for Improved Solid-Sate Supercapacitor Performances

Polymers, Journal Year: 2023, Volume and Issue: 15(18), P. 3758 - 3758

Published: Sept. 14, 2023

Wearable energy storage devices require high mechanical stability and high-capacitance flexible electrodes. In this study, we design a supercapacitor electrode consisting of 1-dimensional carbon nanotubes (CNT), cellulose nanofibrils (CNF), manganese dioxide nanowires (MnO2 NWs). The conductive CNT/CNF-MnO2 NWs suspension was first prepared via ultrasonic dispersion approach, followed by vacuum filtration hot press to form the composite paper electrode. morphological studies show entanglement between CNT CNF, which supports properties composite. exhibits lower resistance when subjected various bending angles (−120–+120°) compared CNT/CNF addition, solid-state also shows density 38 μWh cm−2 capacitance retention 83.2% after 5000 cycles.

Language: Английский

---

Vertical-Channeled Graphene Oxide/Cellulose Composite Flexible Electrodes

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(22), P. 25569 - 25579

Published: Nov. 12, 2024

Supercapacitors have emerged as a significant technology for energy transmission, offering an alternative to traditional storage devices with the ability provide high power supply and life. However, their application development been hindered by tension between flexibility, self-support, density. In this study, cellulose was utilized primary raw material graphene oxide (GO) employed filler. Through careful regulation of morphological control using radial freeze casting, electrode exhibited both longitudinally radially vertical-channeled porosity structure, resulting in remarkable areal capacitance 463 mF cm–2 at current density 1 A cm–2. Additionally, constructed all-solid-state symmetric supercapacitor 49.7 μWh 500 μW This research paves way more flexible lightweight supercapacitors potential long-term performance applications.

Language: Английский

---