Published: Jan. 1, 2024
Language: Английский
ACS Nano, Journal Year: 2024, Volume and Issue: 18(31), P. 20648 - 20658
Published: July 25, 2024
Lean-lithium metal batteries represent an advanced version of the anode-free lithium batteries, which can ensure high energy density and cycling stability while addressing safety concerns loss caused by excessive metal. Herein, a mechanically robust carbon nanotube framework current collector with gradient lithiophilicity is constructed for lean-lithium battery. Using physical vapor deposition method, precise prelithiation achieved, eliminating its irreversible capacity, retaining porous structure in framework, inducing formation due to spontaneous ion diffusion. The lithiophilic three-dimensional are characterized time-of-flight secondary mass spectrometry (TOF-SIMS), scanning transmission electron microscopy (STEM), corresponding spectroscopy (EELS), enables preferential ions at bottom thereby avoiding losses associated dead lithium. As result, LiFePO4 full cell ultralow N/P ratio 0.15, initial Coulombic efficiency increases from 77.75 95.07%. Collaborating synergistically ultrathin (1.5 μm) metal, serving as gradual supplement, 1.43 demonstrates 86% capacity retention after 500 cycles 1C, far surpassing copper-based counterparts (0.9%).
Language: Английский
Citations
15
ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(9), P. 4534 - 4543
Published: Aug. 23, 2024
The development of metallic K is seriously hampered by low melting point, high reactivity, and uncontrollable dendrite growth. Herein, benefiting from the super-potassiophility CNTs (carbon nanotubes), K@CNT composite anodes are prepared via a rational fused-modeling approach, where build interconnected frameworks atoms anchored on CNTs, inducing depressed atomic creeping flowability at temperatures. Thereby, deliver flexibility, processability (∼30 μm), thermal stability (up to 300 °C). In particular, exhibit conformal stripping plating behavior along with plane-structure CNT framework during charge–discharge processes under 10 mA cm–2 without dendrites. Moreover, // Prussian white full cells rate performance (60.9 mAh g–1 3000 g–1), energy density (187.3 Wh kg–1), high-temperature stability. This work provides an avenue for designing high-performance driving commercialization K-metal batteries.
Language: Английский
Citations
9
Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 98, P. 414 - 421
Published: July 6, 2024
Language: Английский
Citations
8
Chemical Science, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 1, 2025
The new lithium salt additive prevents the decomposition of VN and promotes formation a SEI film rich in RSO 3 LiF on graphite electrode surface.
Language: Английский
Citations
0
Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 1, 2025
Language: Английский
Citations
0
ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 13, 2025
Rechargeable aqueous Zn-ion batteries are renowned for their safety, cost-effectiveness, environmental friendliness, and high capacity. However, critical issues, such as restricted electrode kinetics uncontrolled dendrite growth of Zn anodes, have hindered practical applications. Here, we propose a gradient solid-like electrolyte (GSLE) to enhance the overall performance anodes batteries. It shows room-temperature conductivity 13.3 mS cm-1 with an enhanced Zn2+ transference number 0.67. With its negatively charged network, GSLE establishes Zn2+-rich region at Zn|electrolyte interface, thereby boosting interfacial charge transfer accelerating kinetics. Moreover, in situ ZnSe-containing interphase on surface during cycling. Such effectively guides uniform deposition inhibits side reactions. As result, symmetric cells using demonstrate stabilized plating/stripping cycling over 1400 h tolerate current 15 mA cm-2. Furthermore, assembled vanadium-based full deliver remarkable capacity 125.4 mAh g-1 4 A achieve 90% retention after 1000 cycles.
Language: Английский
Citations
0
Published: Jan. 1, 2025
Language: Английский
Citations
0
Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 1, 2025
Language: Английский
Citations
0
ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown
Published: March 6, 2025
Lithium (Li) metal is regarded as a desired anode candidate for high-energy-density rechargeable battery systems in the future because of its high specific capacity and low redox potential. However, Li dendritic growth volume expansion during cycling severely hinder practical application. Herein, an artificial organophosphorus-inorganic hybrid flexbile solid electrolyte interphase (SEI) layer was designed by prereaction between phytic acid (PA) lithium hydroxide (LiOH) to generate chelates quick Li+ conductivity. The organic-polyphosphate (PALi) not only can provide numerous channels migrate quickly but also improve lithiophilicity due uniform distribution phosphorus (P) PALi layer; meanwhile, flexibility existence hydrogen bonds effectively alleviates effect on SEI layer. Therefore, PALi@Cu∥Li cells exhibit Coulombic efficiency 98.85% over 500 cycles at current density 0.5 mA cm-2, PALi@Cu-Li∥Li symmetrical maintain good stability with voltage hysteresis 20 mV 2000 h 1 cm-2. This organic-inorganic strategy provides feasible way fabricate stable efficient applications batteries.
Language: Английский
Citations
0
Carbon, Journal Year: 2025, Volume and Issue: unknown, P. 120166 - 120166
Published: March 1, 2025
Language: Английский
Citations
0