Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 64(1)
Published: Oct. 17, 2024
Sodium metal batteries, known for their high theoretical specific capacity, abundant reserves, and promising low-temperature performance, have garnered significant attention. However, the large ionic radius of Na
Language: Английский
Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(6), P. 3494 - 3589
Published: March 13, 2024
The renewable energy industry demands rechargeable batteries that can be manufactured at low cost using abundant resources while offering high density, good safety, wide operating temperature windows, and long lifespans. Utilizing fluorine chemistry to redesign battery configurations/components is considered a critical strategy fulfill these requirements due the natural abundance, robust bond strength, extraordinary electronegativity of free fluoride formation, which enables fluorinated components with effectiveness, nonflammability, intrinsic stability. In particular, materials electrode|electrolyte interphases have been demonstrated significantly affect reaction reversibility/kinetics, tolerance batteries. However, underlining principles governing material design mechanistic insights atomic level largely overlooked. This review covers range topics from exploration fluorine-containing electrodes, electrolyte constituents, other for metal-ion shuttle constructing fluoride-ion batteries, dual-ion new chemistries. doing so, this aims provide comprehensive understanding structure–property interactions, features interphases, cutting-edge techniques elucidating role in Further, we present current challenges promising strategies employing chemistry, aiming advance electrochemical performance, operation, safety attributes
Language: Английский
Citations
73
Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(5)
Published: May 17, 2023
Abstract Sodium‐ion batteries (SIBs) with wide operating temperature are regarded as promising candidates for large‐scale energy storage systems. However, SIBs under elevated aggravate the electrolyte decomposition unstable cathode‐electrolyte interphase (CEI), causing a rapid capacity degradation. Herein, anion receptor tris(pentafluorophenyl)borane (TPFPB) is selected additive to construct robust NaF‐rich CEI. The strong interactions between and TPFPB via electron‐deficient boron atoms weaken ClO 4 − solvation promote coordination capability solvents Na + cations, demonstrating greatly improved oxidative stability. 3 V 2 (PO ) cathode in TPFPB‐containing delivers long‐term stability retention of 86.9% after 100 cycles at high cut‐off voltage 4.2 (vs. /Na) 60 °C. Besides, also works well enhanced performance over range from −30 This study proposes prospective method by manipulating chemistry constructing high‐temperature rechargeable SIBs.
Language: Английский
Citations
57
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(16)
Published: Jan. 2, 2024
Abstract Widening the voltage window of nickel‐rich layered oxide cathode‐based lithium metal batteries (LMBs) can effectively improve energy density rechargeable batteries. However, serious safety issues associated with high reactivity between LiNi 0.8 Co 0.1 Mn O 2 (NCM811) and electrolyte at cut‐off remains challenging. Herein, a flame‐retardant ability to form robust armor‐like electrode interphase (EEI) LiF Li x B y z compounds for stabilizing Li||NCM811 is proposed. Such exhibits thermal stability effect ensuring battery voltage. The EEI protect both NCM811 (Li) improving cycling performance. As result, capacity retention rate cathode such reached 68% after 150 cycles 4.6 V. This work provides an effective reference reasonable design high‐voltage, electrolytes LMBs.
Language: Английский
Citations
41
Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(13), P. 9455 - 9464
Published: March 21, 2024
Owing to the high H
Language: Английский
Citations
28
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(24)
Published: March 4, 2024
Abstract Lithium‐rich manganese‐based layered oxides (LRMOs) are promisingly used in high‐energy lithium metal pouch cells due to high specific capacity/working voltage. However, the interfacial stability of LRMOs remains challenging. To address this question, a novel armor‐like cathode electrolyte interphase (CEI) model is proposed for stabilizing LRMO at 4.9 V by exploring partially fluorinated formulation. The fluoroethylene carbonate (FEC) and tris (trimethylsilyl) borate (TMSB) formulated largely contribute formation CEI with LiB x O y Li PO F z outer layer LiF‐ 3 4 ‐rich inner part. Such effectively inhibits lattice oxygen loss facilitates + migration smoothly guaranteeing deliver superior cycling rate performance. As expected, Li||LRMO batteries such achieve capacity retention 85.7% average Coulomb efficiency (CE) 99.64% after 300 cycles 4.8 V/0.5 C, even obtain 87.4% 100 higher cut‐off voltage V. Meanwhile, 9 Ah‐class show over thirty‐eight stable life energy density 576 Wh kg −1
Language: Английский
Citations
21
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: June 4, 2024
Abstract Sodium metal batteries (SMBs) remain greatly challenging in safety and stability. Herein, a flame‐retardant s designed, self‐purging high‐voltage electrolyte is designed to stabilize SMBs with the use of ethoxy (pentafluoro) cyclotriphosphazene (PFPN) as additive. PFPN can participate shell structure solvation through stronger van der Waals force form Na 3 N, NaF‐rich solid/cathode interphase (SEI/CEI) electronic insulation fast ion transport. Moreover, harmful impurity (PF 5 ) also be scavenged by avoid HF production, which helps electrode interface. Additionally, combustion radicals (H, HO) cleared between radical (RPO) formed breaking for flame‐retardation purpose. As expected, Na||Na V 2 (PO 4 O F battery modified deliver reservation 92.4%, CE 99.71% after 2000 cycles, simultaneously possess excellent high‐rate charging/slow discharging performance.
Language: Английский
Citations
21
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(44)
Published: Aug. 6, 2024
Abstract Combining high‐voltage nickel‐rich cathodes with lithium metal anodes is among the most promising approaches for achieving high‐energy‐density batteries. However, current electrolytes fail to simultaneously satisfy compatibility requirements anode and tolerance ultra‐high voltage NCM811 cathode. Here, we have designed an ultra‐oxidation‐resistant electrolyte by meticulously adjusting composition of fluorinated carbonates. Our study reveals that a solid‐electrolyte interphase (SEI) rich in LiF Li 2 O constructed on through synergistic decomposition solvents PF 6 − anion, facilitating smooth deposition. The superior oxidation resistance our enables Li||NCM811 cell deliver capacity retention 80 % after 300 cycles at ultrahigh cut–off 4.8 V. Additionally, pioneering V‐class pouch energy density 462.2 Wh kg −1 stably 110 under harsh conditions high cathode loading (30 mg cm −2 ), low N/P ratio (1.18), lean (2.3 g Ah ).
Language: Английский
Citations
20
Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 63(7)
Published: Dec. 12, 2023
Abstract The development of high‐energy‐density Li||LiCoO 2 batteries is severely limited by the instability cathode electrolyte interphase (CEI) at high voltage and temperature. Here we propose a mechanically thermally stable CEI designing for achieving exceptional performance 4.6 V 70 °C. 2,4,6‐tris(3,4,5‐trifluorophenyl)boroxin (TTFPB) as additive could preferentially enter into first shell structure PF 6 − solvation be decomposed on LiCoO surface low oxidation potential to generate LiB x O y ‐rich/LiF‐rich CEI. layer effectively maintained integrity provided excellent mechanical thermal stability while abundant LiF in further improved homogeneity Such drastically alleviated crack regeneration irreversible phase transformation cathode. As expected, with tailored achieved 91.9 % 74.0 capacity retention after 200 150 cycles 4.7 V, respectively. Moreover, such also delivered an unprecedented high‐temperature 73.6 100 °C V.
Language: Английский
Citations
42
Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 470, P. 144340 - 144340
Published: June 25, 2023
Language: Английский
Citations
39
Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(30)
Published: May 25, 2023
The practical implementation of high-voltage lithium-rich manganese oxide (LRMO) cathode is limited by the unanticipated electrolyte decomposition and dissolution transition metal ions. present study proposes a bi-affinity formulation, wherein sulfonyl group ethyl vinyl sulfone (EVS) imparts highly adsorptive nature to LRMO, while fluoroethylene carbonate (FEC) exhibits reductive towards Li metal. This interface modulation strategy involves synergistic use EVS FEC as additives form robust interphase layers on electrode. As-formed S-endorsed but LiF-assisted configuration with more dominant -SO2 - component may promote transport kinetics prevent Furthermore, incorporation S into solid reduction its poorly conducting can effectively inhibit growth lithium dendrites. Therefore, 4.8 V LRMO/Li cell optimized demonstrate remarkable retention capacity 97 % even after undergoing 300 cycles at 1 C.
Language: Английский
Citations
35