Published: Jan. 1, 2024
Language: Английский
ChemSusChem, Journal Year: 2024, Volume and Issue: 17(21)
Published: May 22, 2024
Abstract In practical operating conditions, the lithium deposition behavior is often influenced by multiple coupled factors and there also a lack of comprehensive long‐term validation for dendrite suppression strategies. Our group previously proposed an intermittent lithiophilic model high‐performance three‐dimensional (3D) composite metal anode (LMA), however, electrodeposition was not discussed. To verify this model, paper presents modified 3D carbon cloth (CC) backbone incorporating NiFe 2 O 4 /Fe 3 (NFFO) nanoparticles derived from bimetallic NiFe‐MOFs. Enhanced Li adsorption capacity modulation were achieved MOFs‐derivatives which prompted faster more homogeneous deposition. The further verified in conjunction with density functional theory (DFT) calculations behaviors. As result, obtained Li‐CC@NFFO||Li‐CC@NFFO symmetric batteries exhibit prolonged lifespan low hysteresis voltage even under ultra‐high current conditions (5 mA cm −2 , 10 mAh ), what's more, full battery high mass loading (9 mg ) LiFePO cathode can be cycled at rate 5 C, retention up to 95.2 % before 700 cycles. This work great significance understand evolution dendrites on frameworks.
Language: Английский
Citations
9
Carbon Energy, Journal Year: 2025, Volume and Issue: unknown
Published: April 14, 2025
Abstract Lithium metal anode is one of the ideal materials for next generation high‐energy‐density battery systems. Unfortunately, uneven nucleation Li leads to dendrite growth and volume changes during cycling, resulting in poor electrochemical performance potential safety hazards, which hinder its practical application. In this work, a low‐cost chicken‐bone‐derived carbon material (CBC) with biomimetic structure was designed synthesized using simple one‐step carbonization method. Combining theoretical calculations experimental results, self‐doped N S heteroatoms CBC are demonstrated effectively reduce binding energy atoms lower overpotential. After uniform nucleation, grows spherical shape without dendrites, related reduction local current density inside crosslinking CBC. Benefiting from favorable behavior, Li@CBC electrode achieves ultra‐low overpotential (15.5 mV at 0.1 mA cm −2 ) superdense lithium deposition (zero expansion rate capacity 2 mAh introducing additional lithiophilic sites. The retains high Coulombic efficiency over 98% 479 cycles (1 1 when applied half‐cell Li, shows an excellent cycling full cell LiFePO 4 as cathode.
Language: Английский
Citations
0
Energy & environment materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 18, 2025
Active holes outperform photoelectron‐mediated oxygen reduction in degrading recalcitrant organics under anaerobic conditions, yet their utilization is limited by rapid charge recombination. This challenge was addressed through Cu‐based yolk‐double‐shell microspheres (Cu/Cu 2 O@C‐2shell) engineered via heterogeneous contraction and strategies. Work function analyses confirm Schottky junction‐driven electron transfer from Cu O to Cu, generating an internal electric field that suppresses backflow. Density functional theory reveals Cu‐mediated enhancement of near‐Fermi states (Cu 3d orbitals) a directional → C pathway, spatially isolating O. Finite‐difference time‐domain simulations reveal light‐induced gradients the dual‐shell architecture: 0 ‐mediated localized surface plasmon resonance effect enhances concentration, while hierarchical interfaces create outward‐to‐inward gradient, directing migration inward stabilizing oxidative at surface. The optimized O)@C‐2shell exhibits 38‐fold higher tetracycline degradation sunlight versus benchmarks, with treated water supporting Escherichia coli survival wheat growth. study provides design strategy for accumulation long‐lived on semiconductor photocatalysts.
Language: Английский
Citations
0
Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 678, P. 465 - 476
Published: Sept. 6, 2024
Language: Английский
Citations
2
Inorganic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 11(13), P. 3765 - 3776
Published: Jan. 1, 2024
A simple one-step “flotation” strategy to construct 3D composite Li metal anodes with a lithophilic structure and tailored SEI for dendrite-free lithium anodes.
Language: Английский
Citations
1
Small, Journal Year: 2024, Volume and Issue: unknown
Published: June 14, 2024
Abstract The cycling lifespan of Li‐metal batteries is compromised by the unstable solid electrolyte interphase (SEI) and continuous Li dendrites, restricting their practical implementations. Given these challenges, establishing an artificial SEI holds promise. Herein, a trinitarian gradient innovatively designed through composite coatings magnesium fluoride (MgF 2 ), N‐hexadecyltrimethylammonium chloride (CTAC), polyvinylidene fluoride‐hexafluoropropylene copolymer (PVDF‐HFP) on anode (LMA). Specifically, MgF /CTAC/PVDF‐HFP spontaneously forms lithium (LiF)‐rich PVDF‐HFP‐based SEI, along with lithium‐magnesium (Li‐Mg) alloy substrate as lithiophilic electronic conductor positively charged CTAC during plating. Noticeably, Li‐Mg homogenizes distribution electric field reduce internal resistance, while electronically insulated LiF/PVDF‐HFP offers fast ion‐conducting mechanical flexibility, accommodating volumetric expansion ensuring stable Li‐ion flux. Additionally, at dendritic tip pivotal for mitigating dendrites its electrostatic shield mechanism. Innovatively, this synergistic mechanism, which facilitates colossal granular deposits, constructs dendrite‐free LMA, leading to performances in Li||LFP, popular Li||NCM811, promising Li||S full cells. This work demonstrates design multifunctional comprehensive protection, thereby inspiring further advancements engineering alkali‐metal batteries.
Language: Английский
Citations
1
ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(14), P. 16182 - 16190
Published: July 10, 2024
Language: Английский
Citations
1
ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(29), P. 38134 - 38146
Published: July 11, 2024
Lithium (Li) metal batteries (LMBs) have garnered significant research attention due to their high energy density. However, uncontrolled Li dendrite growth and the continuous accumulation of "dead Li" directly lead poor electrochemical performance in LMBs, along with serious safety hazards. These issues severely hindered commercialization. In this study, a lithiophilic layer Sn-Cu2O is constructed on surface copper foam (CF) grown Cu nanowire arrays (SCCF) through combination electrodeposition plasma reduction. Sn-Cu2O, excellent lithiophilicity, reduces nucleation barrier promotes uniform deposition. Simultaneously, area nanowires local current density, further suppressing growth. Therefore, at 1 mA cm–2, half cells symmetric achieve Coulombic efficiency (CE) stable operation for over 410 cycles run smoothly more than 1350 h. The full using an LFP cathode demonstrate capacity retention rate 90.6% after 1000 5 C, CE as 99.79%, suggesting prospects rapid charging discharging long-term cyclability. This study provides strategy modifying three-dimensional collectors anodes, offering insights into construction stable, safe, fast-charging LMBs.
Language: Английский
Citations
1
Small, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 9, 2024
Lithium (Li) metal batteries (LMBs) have garnered widespread attention due to their high specific capacity. However, the growth of lithium dendrite severely limits practical applications. Herein, a novel strategy is proposed regulate overall potential strength and ions (Li
Language: Английский
Citations
1
Nano Letters, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 22, 2024
Lithium (Li) dendrite is one of the most fatal obstacles for developing practical high energy Li metal batteries, while alloy substrates, with strong lithiophilicity, have attracted increasing interest directing uniform deposition. However, previous research studies associated inhibition closely adsorption energy. Yet, deposition process not solely about an isolated atom, where a comprehensive understanding interfacial lattice mismatch and atom diffusion should also be taken into account. Here, we explore behavior from adhesion work, representing stability bonding strength, both diffusion. It found that overpotential inversely related to requires low barrier. These detailed relationships may offer guidance subsequent substrate development.
Language: Английский
Citations
1