Small, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 10, 2024
Aqueous Zinc-iodine batteries (ZIBs) are widely viewed as promising energy storage devices due to their high density and intrinsic safety. However, they encounter great challenges such grievous polyiodides shuttle sluggish iodine (I
Language: Английский
ACS Nano, Journal Year: 2024, Volume and Issue: 18(42), P. 28557 - 28574
Published: Oct. 9, 2024
Aqueous zinc–iodine batteries (ZIBs) based on the reversible conversion between various iodine species have garnered global attention due to their advantages of fast redox kinetics, good reversibility, and multielectron feasibility. Although significant progress has been achieved in ZIBs with two-electron I–/I2 pathway (2eZIBs), relatively low energy density hindered practical application. Recently, four-electron I–/I2/I+ electrochemistry (4eZIBs) shown a improvement density. Nonetheless, use 4eZIBs is challenged by poor reversibility polyiodide shuttling during I+ hydrolysis I2/I+ conversion. In this Review, we thoroughly summarize fundamental understanding two ZIBs, including reaction mechanisms, limitations, strategies. Importantly, provide an intuitive evaluation assess potential highlight critical impacts Zn utilization rate. Finally, emphasize cost issues associated electrodes propose closed-loop recycling routes for sustainable storage ZIBs. These findings aim motivate application advanced promote storage.
Language: Английский
Citations
12
Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104130 - 104130
Published: Feb. 1, 2025
Language: Английский
Citations
1
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 31, 2025
Aqueous zinc iodine (Zn-I2) batteries have attracted attention due to their low cost, environmental compatibility, and high specific capacity. However, development is hindered by the severe shuttle effect of polyiodides slow redox conversion kinetics (I2) cathode. Herein, a long-life Zn-I2 battery developed anchoring within an edible fungus slag-derived carbon matrix encapsulated with Zn single-atom catalysts (SAZn@CFS). The N content microporous structure SAZn@CFS provide strong confinement, while Zn-N4-C sites chemical interact effectively mitigating dissolution polyiodide effect. Additionally, uniformly distributed SAZn significantly enhance efficiency I-/I3 -/I5 -/I2, leading improved At current density 10 A g-1, designed delivers excellent capacity 147.2 mAh g-1 long lifespan over 80 000 cycles 93.6% retention. Furthermore, exhibits stable operation for 3500 times even at 50 °C, demonstrating significant advances in reversible storage. This synergistic strategy optimizes composite structure, offering practical approach meet requirements high-performance batteries.
Language: Английский
Citations
0
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 4, 2025
Abstract Zinc–iodine batteries (ZIBs) are promising energy storage devices due to their nonflammable aqueous electrolyte and intrinsically safe zinc (Zn) anode but encounters thorny challenges, including soluble polyiodides shuttling sluggish iodine redox kinetics. Here, an ionic porous organic polymers (iPOPs) with Lewis acid–base pairs (e.g., pyridine cation free Br − ) Zn single‐atom sites (iPOP‐TPyPZn) is developed as advanced I 2 host notably enhance the performance of ZIBs. The iPOP‐TPyPZn can not only significantly prevent via synergy also expedite kinetics species through combined action acid catalytic sites. Benefiting from double synergistic mechanism, assembled ZIBs loaded cathode exhibit outstanding electrochemical ultra‐high cycling stability over 40 000 cycles at 8 A g −1 . Combined in/ex situ spectral characterizations theoretical calculations clearly reveal reversible reaction mechanism vital role in enhancing performance. This work provides a path for precise preparation hosts offers new insights into toward metal–I batteries.
Language: Английский
Citations
0
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 13, 2025
Abstract The energy efficiency of aqueous Zn‐I 2 batteries (AZIBs) is traditionally enhanced by cathode host catalysts with high electron affinity, based on the consensus that stronger affinity improves electron‐rich polyiodides adsorption and prevents shuttle effects, thus promoting I /I⁻ conversion reaction. Herein, carbon‐coated Mo C nanocrystals supported carbon spheres (CS/Mo C@C) as an iodine catalyst developed. Interestingly, a deviation from expectation observed: moderate CS/Mo C@C, rather than higher C, actually leads to faster reaction kinetics, while maintaining stable species. This phenomenon can be attributed optimal electron‐donating properties charge transfer dynamics associated lower affinity. Through systematic electrochemical spectroscopic analysis, it uncovered conformal layer covering key adjusting capability, enhancing transfer, improving interfacial kinetics C@C catalyst. Consequently, assembled AZIBs employing C@C/I demonstrate smaller overpotential gap (0.06 V) superior cyclic stability (89.6% capacity retention after 25 000 cycles at 5 A g⁻ 1 ) compared C/I (0.09 V/40.6% 5000 cycles). study highlights significance modulating surface in design for high‐efficiency AZIBs.
Language: Английский
Citations
0
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 25, 2025
Abstract The industrial development of Zn‐ion batteries requires high performance even with lean‐electrolyte. Nevertheless, lean‐electrolyte can exacerbate concentration polarization at the interface electrode/electrolyte, leading to significant Zn corrosion and battery failure. Here, a stable ion‐rich protective layer (TMAO‐Zn) is constructed by unique zwitterion structure trimethylamine N‐oxide (TMAO). TMAO characterized direct connection between positive negative charges (N + ‐O − ) minimal dipole moment, which renders weak interactions form TMAO‐Zn 2+ , thereby reducing promoting rapid uniform deposition . Furthermore, O exhibits higher electrophilic index, indicating stronger propensity for hydrogen bond active free water in inner Helmholtz (IHL), mitigating under extreme conditions low electrolyte‐to‐capacity ratio (E/C ratio). Consequently, symmetrical enables cycling over 250 h 15 µL mA −1 Additionally, Zn/I₂ pouch E/C 21.2 provides ultra‐high specific capacity 96 cycles (capacity retention rate 98.3%). This study offers new concept propel practical application
Language: Английский
Citations
0
Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown
Published: May 5, 2025
Aqueous zinc-iodine (Zn-I2) batteries with four-electron (4e) I-/I0/I+ conversion (4eZIBs) offer high energy density but face significant challenges for application, including the polyiodide shuttle effect and I+ hydrolysis I2 cathodes poor reversibility Zn anodes. Here, we report a coordination chemistry strategy to address these issues simultaneously by introducing hexamethylenetetramine (HMTA) as an electrolyte additive. In aqueous electrolytes, HMTA undergoes protonation form positively charged nitrogen moieties that effectively precipitate polyiodides species (ICl2-) mitigate hydrolysis. This enables 4eZIBs achieve near-theoretical specific capacity of 425 mA h g-1 (based on mass iodine) Coulombic efficiency (CE) exceeding 99%. On anode, preferentially adsorbs onto its surface, inhibiting competitive water adsorption suppress both dendrite formation hydrogen evolution. As result, first time, durable 4eZIB performance in pouch-cell configurations limited supply. A 0.5 pouch cell 15% utilization exhibits 113.0 W kg-1 anodes) excellent cycling stability over 1400 cycles, highlighting potential next-generation storage systems.
Language: Английский
Citations
0
Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(37), P. 24746 - 24760
Published: Jan. 1, 2024
Aqueous zinc–halogen batteries (AZHBs) are promising energy-storage systems but suffer from shuttle effect and poor redox kinetics. This review summarizes the mechanism research status of AZHBs provides solutions to overcome challenges.
Language: Английский
Citations
3
Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 101, P. 402 - 415
Published: Oct. 5, 2024
Language: Английский
Citations
3
Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 16, 2024
Abstract Achieving both high iodine loading cathode and Zn anode depth of discharge (DOD) is pivotal to unlocking the full potential energy‐dense Zn‐I 2 batteries. However, this combination exacerbates detrimental shuttle effect polyiodide intermediates, significantly impairing battery's reversibility stability. Herein, study reports an advanced high‐loading (denoted as MX‐AB@I) enabled by a multifunctional Ti 3 C T x MXene modulator, which presents stability energy density in Through comprehensive experimental theoretical analyses, intrinsic regulating mechanisms are elucidated modulator effectively suppresses shuttling, enhances conversion kinetics, dramatically improves reversibility. With aid MX‐AB@I composite achieves mass 23 mg cm −2 realizes practically areal capacity 4.0 mAh . When paired with thin (10 µm), configuration DOD 78.7% 171.3 Wh kg −1 , surpassing majority battery systems reported literature. This effective approach designing cathodes for batteries leveraging modulators regulate critical electrochemical reaction processes.
Language: Английский
Citations
2