Small, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 26, 2024
Lithium-sulfur batteries (LSBs) showcase great promise for large-scale energy storage systems, however, their practical commercialization is seriously hindered by the sluggish redox reaction kinetics and detrimental shuttle effect of soluble polysulfides. Herein, small ZnTe
Language: Английский
Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137467 - 137467
Published: March 1, 2025
Language: Английский
Citations
0
Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110949 - 110949
Published: April 1, 2025
Language: Английский
Citations
0
Nano Letters, Journal Year: 2025, Volume and Issue: unknown
Published: April 15, 2025
The d orbital physics are closely related to the catalytic activity of transition-metal-based catalysts in Li-S batteries. However, challenges remain understanding optimal electronic configuration, causing a lack guidance precise design catalysts. Herein, by virtue LaCoO3-based with different combinations low-spin states and high-spin Co3+, volcano relationship between dz2 filling number (from 0.95 1.29) S/Li2S redox reaction kinetics is revealed. best provided at 1.12. As result, assembled battery shows low decay rate 0.026% per cycle 1500-cycle test high energy density 460.7 Wh kg-1 practical pouch cell. This work reveals critical influences on catalyzing provides insights into finely regulating structures high-performance for
Language: Английский
Citations
0
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 24, 2025
Abstract Involving electrocatalysts to increase the sluggish reduction reaction kinetics of soluble lithium polysulfides is evidenced effective in inhibiting shuttle effect and enhancing cycle stability Li─S batteries. In this work, phosphorus‐coordinated single Fe atoms (FePC) are synthesized based on coordination environment modulation strategy. Combining with experimental theoretical methods, well‐designed FePC plane‐symmetric Fe─P 4 ─C configuration exhibits strengthened catalytic toward reversible conversion between LiPS Li 2 S, that endows S@FePC cathodes superior electrochemical performance. The prepared coin cells achieve prolonged cyclic over 1000 cycles at 1C a high capacity retention 77.8%. Even sulfur loading (5.7 mg cm −2 ) low E/S ratio (6.2 µL S −1 ), areal reached 6.0 mAh 88.3% it retained after 100 0.1 C. Moreover, 0.6 Ah pouch cell higher 76.3% C compared S@FeNC. Meanwhile, 8Ah approaches specific energy 401 Wh kg proving its practicability. obtained outcomes may guide future design development SACs activity for practical
Language: Английский
Citations
0
Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 163125 - 163125
Published: April 1, 2025
Language: Английский
Citations
0
Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 100, P. 113412 - 113412
Published: Sept. 18, 2024
Language: Английский
Citations
3
Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 363, P. 124806 - 124806
Published: Nov. 9, 2024
Language: Английский
Citations
3
Nano Energy, Journal Year: 2024, Volume and Issue: unknown, P. 110509 - 110509
Published: Nov. 1, 2024
Language: Английский
Citations
3
Nano Letters, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 21, 2025
The sluggish redox kinetics of polysulfides and the resulting shuttle effect remain significant challenges for practical utilization lithium-sulfur (Li-S) batteries. To address unidirectional catalytic limitations conventional electrocatalysts, we herein report a binary metal (CoNi) alloy embedded in carbon matrix on nanofibers (CoNi@C-CNFs) as highly efficient electrocatalyst to accelerate bidirectional polysulfide conversions. Time-of-flight secondary ion mass spectrometry (TOF-SIMS) reveals significantly improved CoNi toward conversions after introducing Ni component. Theoretical simulations further confirm that synergistic interaction between Co atoms enhances performance. Electrochemical measurements demonstrate high specific capacity 705 mAh g-1 at 3.0 C exceptional long-term cyclic stability both 1.0 2.0 C. Impressively, an areal 5.28 cm-2 is achieved under sulfur loading ∼6.1 mg with lean electrolyte conditions (∼6.5 μL mgs-1).
Language: Английский
Citations
0
Small, Journal Year: 2025, Volume and Issue: unknown
Published: May 2, 2025
Abstract Lithium─sulfur (Li─S) batteries have garnered extensive research interest due to their high theoretical capacity and cost‐effectiveness. However, practical application is hindered by severe shuttle effects sluggish conversion kinetics. Here, the development of a novel microreactor composed undercoordinated edge‐rich single‐crystal nickel─cobalt bimetallic oxides embedded within conductive carbon nanotube network (NCO/CNT), as an electrocatalyst for Li─S reported. The oxide matrix ensures structural stability during reactions, while its abundant edge sites provide active catalytic centers. Structural analyses reveal pronounced oxygen undercoordination NCO/CNT, with these unsaturated demonstrating strong adsorption activity, effectively promoting sulfur species immobilization conversion. Complementary calculations indicate that unique design optimizes electronic configuration metal atoms, enhancing electron exchange species. Benefiting from features, incorporating NCO/CNT achieve initial discharge 1327.1 mAh g −1 at 0.2C, areal 5.4 cm −2 under loading 5.83 mg , 96.3% retention after 50 cycles. This work offers insights into high‐performance microreactors, paving way efficient sustainable electrochemistry.
Language: Английский
Citations
0