
Discover Electrochemistry., Journal Year: 2025, Volume and Issue: 2(1)
Published: May 7, 2025
Language: Английский
Discover Electrochemistry., Journal Year: 2025, Volume and Issue: 2(1)
Published: May 7, 2025
Language: Английский
Journal of Power Sources, Journal Year: 2025, Volume and Issue: 630, P. 236171 - 236171
Published: Jan. 8, 2025
Language: Английский
Citations
3Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 2, 2025
Abstract Carbon‐based fibrous supercapacitors (FSSCs) are promising power sources for wearable electronics, often compounding with transition metal oxides (TMOs) to improve energy density. However, conventional methods introducing TMOs onto exterior surfaces of carbon‐based fibers typically degrade electrical transport and cycle stability. Herein, nanoconfined MnO@Mn 2 O 3 heterojunctions within carbon nanotube (CNT) (MOIC) composite FSSCs stabilized by Mn─O─C bonds, exhibiting record stability 95.7% capacitance retention after 10 000 cycles 89.4% 50 reported. X‐ray absorption near edge structure (XANES), diffraction, photoelectron spectroscopy (XPS) analyses confirm heterostructure, which arises through a partial phase transformation from MnO Mn , as further supported density functional theory calculations. chemical verified XPS, extended fine structure, XANES analyses, facilitate 3D electron transport, enabling MOIC fiber superior conductivity than CNT fiber. The nanoconfinement 2+ CNTs, driven capillary effects electrostatic repulsion between protonated CNTs preserves the clean CNTs. This configuration enables successful wet‐spinning three times tensile strength without nanoconfinement. work opens new pathways designing carbon/metal oxide hybridized storage applications.
Language: Английский
Citations
1Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 178922 - 178922
Published: Jan. 1, 2025
Language: Английский
Citations
1Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 180384 - 180384
Published: April 1, 2025
Language: Английский
Citations
1Energy Materials, Journal Year: 2025, Volume and Issue: 5(7)
Published: March 6, 2025
The pathway to sustainable development and carbon neutrality is contingent upon the of high-performance porous electrode materials sourced from biomass industrial waste. present research introduces an innovative approach for fabrication carbon, harnessing collaborative impact various transform in form corncobs byproduct fly ash into tiered characterized by a high specific surface area excellent functionality, via simple hydrothermal activation method. This material particularly well-suited applications supercapacitors, lithium-ion batteries, other energy storage systems. fabricated these two waste streams boasts wealth pores exceptional (1,768 m2 g-1), which turn confers superior electrochemical performance. achieves remarkable capacitance up 240 F g-1 (at 1 A demonstrates properties lithium storage. Lithium-ion batteries constructed with this feature extensive potential range, initial capacity 160 mAh at 0.1 g-1, near-perfect coulomb efficiency approximately 100%. uncovers novel paradigm preparation through low-carbon environmentally conscious approach. It not only advances pursuit realization peak objectives but also underscores valorizing byproducts context cutting-edge technologies.
Language: Английский
Citations
0ACS electrochemistry., Journal Year: 2025, Volume and Issue: unknown
Published: April 7, 2025
Language: Английский
Citations
0Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: 1028, P. 180667 - 180667
Published: April 28, 2025
Language: Английский
Citations
0Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: May 12, 2025
Abstract The pursuit of high‐energy‐density supercapacitors remains challenged by the irreversible surface charge accumulation and sluggish ion dynamics in conventional vanadate cathodes. To address these limitations, a lattice strain engineering strategy is devised through B/Mo co‐doping NiV 2 O 6 , which enables dynamic regulation distribution via atomic‐level stress manipulation. Density functional theory (DFT) calculations demonstrate that high‐valence Mo 6+ induces compressive (–4.4%) to strengthen metal‐oxygen covalency, while low‐electronegativity B 3+ generates tensile (+ 2.9%) enhances hydroxyl affinity. This dichotomy optimizes OH − adsorption energetics 0.28 eV creates gradient oxygen vacancy. cooperative dopant effects significantly enhance charge‐transfer kinetics, endowing B/Mo‐NiV /NF electrode with superior specific capacitance 2850 F g −1 (1 140 C ) at 1 A . In situ Raman reveals reversible vacancy migration along (004) crystallographic planes during cycling, dynamically dissipates structural stress. solid‐state asymmetric supercapacitor delivers 1.8 V operational window remarkable energy/power density (38.35 Wh kg /900 W 75% capacity retention after 10 000 cycles. Practical viability demonstrated powering 20 parallel‐connected light‐emitting diodes (LEDs). work pioneers strain‐mediated paradigm for durable high‐power energy storage.
Language: Английский
Citations
0Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 127, P. 117107 - 117107
Published: May 23, 2025
Language: Английский
Citations
0Discover Electrochemistry., Journal Year: 2025, Volume and Issue: 2(1)
Published: May 7, 2025
Language: Английский
Citations
0