Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 980, P. 173613 - 173613
Published: Jan. 25, 2024
Language: Английский
Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 980, P. 173613 - 173613
Published: Jan. 25, 2024
Language: Английский
Journal of Drug Delivery Science and Technology, Journal Year: 2024, Volume and Issue: 99, P. 105958 - 105958
Published: July 9, 2024
Language: Английский
Citations
16Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)
Published: Jan. 30, 2025
Core-shell silicon/multiwall carbon nanotubes are one of the most promising anode candidates for further improvement lithium-ion batteries. Sufficient accommodation massive volume expansion silicon during lithiation process and preventing pulverization delamination with easy fabrication processes still critical issues practical applications. In this study, core-shell silicon/MWCNTs materials were synthesized using a facile controllable PECVD technique to realize aligned MWCNTs followed by sputtering step. The use direct growth multi-walled on current collector creates low tortuosity, flexible, conductive scaffold, which, in addition CNT agglomeration, alleviates active material from collector, leading formation an electrode unique electrochemical performance. CNT-Si can achieve excellent gravimetric specific capacity 3250 mAh/g under rate C/5 99.8% retention after more than 700 cycles. Electron microscopy revealed that structure has maintained its integrity stability long cycling (700 cycles more). Apart achieving high charging capacity, such configuration leads facile, inexpensive free-standing binder-free electrodes no need polymeric binders.
Language: Английский
Citations
1Ceramics International, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 1, 2025
Language: Английский
Citations
1Carbon, Journal Year: 2024, Volume and Issue: 229, P. 119452 - 119452
Published: July 16, 2024
Language: Английский
Citations
8Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: unknown, P. 176620 - 176620
Published: Sept. 1, 2024
Language: Английский
Citations
7Coatings, Journal Year: 2024, Volume and Issue: 14(7), P. 832 - 832
Published: July 3, 2024
Commercialized lithium iron phosphate (LiFePO4) batteries have become mainstream energy storage due to their incomparable advantages in safety, stability, and low cost. However, LiFePO4 (LFP) still the problems of capacity decline, poor low-temperature performance, etc. The are mainly caused by following reasons: (1) irreversible phase transition LiFePO4; (2) formation cathode–electrolyte interface (CEI) layer; (3) dissolution elements; (4) oxidative decomposition electrolyte; (5) repeated growth thickening solid–electrolyte (SEI) film on anode electrode; (6) structural deterioration graphite anodes; (7) dendrites. In order eliminate problems, methods such as modification, doping, coating cathode materials, electrolyte design, been studied effectively improve electrochemical performance LFP batteries. This review briefly describes working principle battery, crystal structure material, its a cathode. degradation mechanism is summarized three aspects—cathode electrolyte—and research status material modification design emphatically discussed. Finally, challenges future development prospected.
Language: Английский
Citations
5ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 28, 2024
To meet the rising demand for energy storage, high-capacity Si anode-based lithium-ion batteries (LIBs) with extended cycle life and fast-charging capabilities are essential. However, anodes face challenges such as significant volume expansion low electrical conductivity. This study synthesizes a porous spherical Si/Multi-Walled Carbon Nanotube (MWCNT)@C anode material via spray drying, combining nanoparticles, MWCNT dispersion, sucrose, carboxymethyl cellulose (CMC). The incorporation creates robust 3D conductive network within microspheres, enhancing Li+ diffusion improving fast-charging/discharging performance. After 300 cycles at 1 A g–1, achieved discharge capacity of 536.6 mA h g–1 80.5% retention. Additionally, integrating Single-Walled Nanotubes (SWCNTs) further enhanced retention in binder-free, self-supporting electrode created through vacuum filtration. Si/MWCNT@C//LiFePO4 full cell exhibited an initial Coulombic efficiency (ICE) exceeding 80%, specific 72.4 79.8% after 400 g–1. offers promising strategy performance structural design anodes.
Language: Английский
Citations
4Materials Science and Engineering B, Journal Year: 2025, Volume and Issue: 313, P. 117971 - 117971
Published: Jan. 8, 2025
Language: Английский
Citations
0Carbon letters, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 5, 2025
Language: Английский
Citations
0ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(6)
Published: Feb. 1, 2025
Abstract Aqueous zinc‐ion batteries (AZIBs) have garnered extensive attention due to their high safety and low‐cost nature. However, the advancement of AZIBs is hindered by low capacity cost cathode materials. Amorphous materials, with compositional structural versatility, enable optimization properties meet specific requirements. In this work, amorphous xZnO‐(50‐x)Fe 2 O 3 ‐ 50P 5 (x = 15, 20, 25, 30, 35, 40, mol%) materials were employed in investigated changes internal structure glass during Zn substitution for Fe impact on electrochemical performance. The characterized XRD, FTIR, SEM, EDS. Acid‐resistance density tests carried out analyze compactness Moreover, bulk resistivity used explore variations composition conductivity. Electrochemical performance was evaluated through impedance spectroscopy galvanostatic charge‐discharge tests. Additionally, graphene composite technology enhance electrical When content ratio reached 2, optimized, exhibiting cycle stability (capacity stabilized at 32.83 mAh/g after 400 cycles 50 mA/g Coulombic efficiency approaching 100%). This indicates a promising new future AZIBs.
Language: Английский
Citations
0