Nature Sustainability, Год журнала: 2025, Номер unknown
Опубликована: Апрель 3, 2025
Язык: Английский
Advanced Materials, Год журнала: 2024, Номер 36(14)
Опубликована: Янв. 4, 2024
Abstract After application in electric vehicles, spent LiFePO 4 (LFP) batteries are typically decommissioned. Traditional recycling methods face economic and environmental constraints. Therefore, direct regeneration has emerged as a promising alternative. However, irreversible phase changes can significantly hinder the efficiency of process owing to structural degradation. Moreover, improper storage treatment practices lead metamorphism, further complicating process. In this study, sustainable recovery method is proposed for electrochemical repair LFP batteries. A ligand‐chain Zn‐complex (ZnDEA) utilized regulator, with its ─NH─ group alternatingly facilitating binding preferential transition metal ions (Fe 3+ during charging Zn 2+ discharging). This dynamic coordination ability helps modulate volume within recovered framework. Consequently, framework store more Li‐ions, enhance reversibility between FePO (FP), modify initial Coulombic efficiency, reduce polarization voltage differences. The cells exhibit excellent capacity retention 96.30% after 1500 cycles at 2 C. ligand chain mechanism promotes evolution facilitate ion migration, providing valuable insights into targeted compensation environmentally friendly practical applications.
Язык: Английский
Процитировано
38
Nature Communications, Год журнала: 2024, Номер 15(1)
Опубликована: Авг. 2, 2024
Energy management strategy is the essential approach for achieving high energy utilization efficiency of triboelectric nanogenerators (TENGs) due to their ultra-high intrinsic impedance. However, proven in practical applications remains low, and output regulation functionality still lacking. Herein, we propose a detailed transfer extraction mechanism addressing voltage charge losses caused by crucial switches circuits. The conversion increased 8.5 times through synergistical optimization TENG switch configurations. Furthermore, TENG-based power supply with storage regularization functions realized system circuit design, demonstrating stable powering electronic devices under irregular mechanical stimuli. A rotating that only works 21 s can make hygrothermograph work stably 417 s. Even hand driving, various types TENGs consistently provide such as calculators mini-game consoles. This provides an in-depth between circuits, also addresses technical challenge converting unstable into usable electricity field. Effective enable realistic applications. Here, authors optimize configurations improve design functionalities.
Язык: Английский
Процитировано
38
Advanced Materials, Год журнала: 2024, Номер 36(23)
Опубликована: Фев. 19, 2024
Abstract The stable phase transformation during electrochemical progress drives extensive research on vanadium‐based polyanions in sodium‐ion batteries (SIBs), especially Na 3 V 2 (PO 4 ) (NVP). And the electron transfer between 3+/4+ redox couple NVP could be generally achieved, owing to confined crystal variation battery service. However, more favorable 4+/5+ is still hard‐to‐access situation due high barrier and further brings about corresponding inefficiency energy densities. In this work, multilevel frame (MLNP) alters reaction pathway undergo homeostatic solid solution process breaks of at voltage, taking by progressive transition metal (V, Fe, Ti, Cr) couple. diversified paths across diffusion barriers realized distinctive release/uptake inactive Na1 site, confirmed calculations density functional theory. Thereby its volume change merely 1.73% multielectron‐transfer (≈2.77 electrons). MLNP cathode achieve an impressive 440 Wh kg −1 , driving leading development among other NASICON structure SIBs. integration multiple couples with low strain modulates effectively will open a new avenue for fabricating high‐performance cathodes
Язык: Английский
Процитировано
33
Energy & Environmental Science, Год журнала: 2024, Номер 17(11), С. 3700 - 3738
Опубликована: Янв. 1, 2024
Fluid-based triboelectric nanogenerators (F-TENGs) represent a cutting-edge technology that leverages fluids as contact medium to harness renewable energy through electrification (CE) and electrostatic induction.
Язык: Английский
Процитировано
30
Advanced Composites and Hybrid Materials, Год журнала: 2024, Номер 7(3)
Опубликована: Май 15, 2024
Язык: Английский
Процитировано
29
Journal of Power Sources, Год журнала: 2024, Номер 602, С. 234365 - 234365
Опубликована: Март 21, 2024
Язык: Английский
Процитировано
26
Waste Management, Год журнала: 2025, Номер 195, С. 220 - 230
Опубликована: Фев. 8, 2025
Язык: Английский
Процитировано
3
Advanced Materials, Год журнала: 2025, Номер unknown
Опубликована: Фев. 23, 2025
Abstract Lithiation reactions driven by chemical potential offer a promising avenue for directly regenerating degraded lithium iron phosphate (LFP). However, the choice of solution system significantly influences supplementation where improper selection may result in poor recovery or extremely slow kinetics. Herein, it is identified that most critical factor affecting repair effectiveness redox anions solution, which determines whether spent LFP (SLFP) can undergo spontaneous lithiation under ambient conditions. Then, machine learning (ML) used prediction and screening huge systems, finally general strategy proposed: creating low incorporates with either moderate at high concentrations. As demonstration, regenerated ascorbic acid LiOH systems exhibits discharge capacity 144 mAh g −1 1 C, retaining 96% its after 500 cycles 5 C. This work establishes an important criteria designing to restore LFP, marking significant advancement direct regeneration cathode materials from lithium‐ion batteries (LIBs).
Язык: Английский
Процитировано
2
Advanced Energy Materials, Год журнала: 2023, Номер 14(8)
Опубликована: Дек. 31, 2023
Abstract Charge generation and charge decay are two essential factors that determine the surface density of a triboelectric nanogenerator (TENG). However, research mainly focuses on boosting generation, little attention is paid to suppressing decay. Here, strategy decay, including air breakdown dielectric leakage, TENG with high (HCD‐TENG) proposed by utilizing dual layer. A series parameters different materials tested assistance excitation (CE‐TENG) reveal relationships between breakdown, leakage in atmospheric environment. Further, phenomenon limiting maximum output prior observed for first time. With simultaneous suppression enhanced 2.2 mC m −2 . This work not only provides new insight into performance optimization material selection TENG, but also significant guidance obtaining high‐output future.
Язык: Английский
Процитировано
40
Chemical Engineering Journal, Год журнала: 2024, Номер 481, С. 148640 - 148640
Опубликована: Янв. 8, 2024
Язык: Английский
Процитировано
17