Electric double layer design for Zn-based batteries

Energy storage materials, Journal Year: 2023, Volume and Issue: 62, P. 102932 - 102932

Published: Aug. 16, 2023

Language: Английский

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A Double‐Charged Organic Molecule Additive to Customize Electric Double Layer for Super‐Stable and Deep‐Rechargeable Zn Metal Pouch Batteries

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(8)

Published: Nov. 12, 2023

Abstract The electrochemical performance of aqueous zinc metal batteries (AZMBs) is highly dependent on the electric double layer (EDL) properties at Zn electrode/electrolyte interface. Herein, a novel reconfigured EDL constructed via double‐charged theanine (TN) additive for super‐stable and deep‐rechargeable AZMBs. Experiments theoretical computations unravel that positively charged TN not only serves as preferential anchor to form water‐poor Helmholtz plane onto anode, but also its anionic end could coordinate with 2+ tailor solvation structure in diffusion further reconstruct inner H‐bonds networks, thus effectively guiding uniform deposition suppressing water‐induced side reactions. Consequently, Zn//Zn cells acquire outstanding cycling stabilities nearly 800 h high depth discharge 80%. Moreover, Zn//VOX full deliver substantial capacity retention (94.12% after 1400 cycles 2 A g −1 ) under practical conditions. Importantly, designed 2.7 Ah pouch cell harvests recorded energy density 42.3 Wh Kg 79.5 L –1 , remarkable 85.93% 220 50 mA . This innovative design concept reshape chemistry would inject fresh vitality into developing advanced AZMBs beyond.

Language: Английский

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A Trifunctional Electrolyte Enables Aqueous Zinc Ion Batteries with Long Cycling Performance

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(30)

Published: March 25, 2024

Abstract Aqueous zinc ion batteries hold promise as alternative systems to lithium‐based batteries. However, practical development faces critical challenges due parasitic side reactions and dendrite growth in anodes. While introducing electrolyte additives is promising, monofunctional offer limited protection the anode from a single aspect. Herein, disodium succinate additive presented establish hydrophobic zincophilic dual electric layer structure on Zn surface, regulate solvation of 2+ , act pH buffer during cycling. As result, symmetrical cell with an containing 0.2 m SADS shows durable life over 2200 h, Zn||MnO 2 full still maintains 80% capacity retention after 1000 cycles. In addition, both show wide applicability match NVO I cathode. This work provides low‐cost multifunctional additive, facilitating high‐performance aqueous

Language: Английский

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Building Near‐Unity Stacked (002) Texture for High‐Stable Zinc Anode

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(14)

Published: Dec. 21, 2023

Abstract Dendrite‐free Zn anode is the key to avoiding battery failure, which largely determined by crystal growth during electrodeposition process. Therefore, controlling specific orientation of imperative for high‐performing aqueous zinc ion batteries. Herein, an electrocrystallization regulation strategy proposed achieve near‐unity stacked (002) texture growth. Featuring zincophilic nature and high electronegative carboxylate radical, disodium maleate molecules tend selectively adsorb on plane, forming a dynamic protection layer. This adsorption layer regulates 2+ diffusion along [100] [101] orientations with lowest deposition rate homogenizes flux, keeps away water from surface, constructing flattened horizontally arranged dominantly inhibited side‐reaction. Consequently, exhibits 40‐fold enhancement in running lifetime beyond 3200 h improved coulombic efficiency 99.81% over 3000 cycles than that bare ZnSO 4 electrolyte. Even at harsh plating/stripping conditions 30 mAh cm −2 , still sustains state‐of‐the‐art stability 120 h, enabling substantial advance long‐term battery.

Language: Английский

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Mapping the design of electrolyte additive for stabilizing zinc anode in aqueous zinc ion batteries

Energy storage materials, Journal Year: 2024, Volume and Issue: 68, P. 103364 - 103364

Published: March 24, 2024

Language: Английский

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Refining the inner Helmholtz plane adsorption for achieving a stable solid-electrolyte interphase in reversible aqueous Zn-ion pouch cells

Energy storage materials, Journal Year: 2024, Volume and Issue: 65, P. 103190 - 103190

Published: Jan. 21, 2024

Language: Английский

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Aqueous Electrolyte With Weak Hydrogen Bonds for Four‐Electron Zinc–Iodine Battery Operates in a Wide Temperature Range

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(32)

Published: June 4, 2024

Abstract In the pursuit of high‐performance energy storage systems, four‐electron zinc–iodine aqueous batteries (4eZIBs) with successive I − /I 2 + redox couples are appealing for their potential to deliver high density and resource abundance. However, susceptibility positive valence hydrolysis instability Zn plating/stripping in conventional electrolyte pose significant challenges. response, polyethylene glycol (PEG 200) is introduced as co‐solvent m ZnCl solution design a wide temperature electrolyte. Through comprehensive investigation combining spectroscopic characterizations theoretical simulations, it elucidated that PEG disrupts intrinsic strong H‐bonds water by global weak PEG–H O interaction, which strengthens O─H covalent bond intensifies coordination 2+ . This synergistic effect substantially reduces activity restrain hydrolysis, facilitating kinetics, mitigating 3 formation smoothening deposition. The 4eZIBs optimized hybrid not only superior cyclability low fading rate 0.0009% per cycle over 20 000 cycles close‐to‐unit coulombic efficiency but also exhibit stable performance range from 40 °C −40 °C. study offers valuable insights into rational electrolytes 4eZIBs.

Language: Английский

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Blocking the passivation reaction via localized acidification and cation selective interface towards highly stable zinc anode

Energy storage materials, Journal Year: 2024, Volume and Issue: 70, P. 103449 - 103449

Published: May 10, 2024

Language: Английский

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Machine Learning-Assisted High-Donor-Number Electrolyte Additive Screening toward Construction of Dendrite-Free Aqueous Zinc-Ion Batteries

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

The utilization of electrolyte additives has been regarded as an efficient strategy to construct dendrite-free aqueous zinc-ion batteries (AZIBs). However, the blurry screening criteria and time-consuming experimental tests inevitably restrict application prospect additive strategy. With rise artificial intelligence technology, machine learning (ML) provides avenue promote upgrading energy storage devices. Herein, we proposed intriguing ML-assisted method accelerate development efficiency on AZIBs. Concretely, selected Gutmann donor number (DN value) a screen parameter, which can reflect interaction between solvent molecules ions, integrated ML model that predict DN values organic via molecular fingerprints, thereby achieving additives. Then, combined with theoretical calculations, influence law three different thermodynamic stability Zn anode its corresponding optimization mechanisms were revealed; are in positive correlation electrochemical performance anode. Especially, isopropyl alcohol (IPA) high value (36) various Zn-based cells presented superior performance, including calendar life (1500 h), stable Coulombic (99% within 450 cycles), favorable cycling retention. This work pioneers techniques for predicting additives, offering compelling investigation

Language: Английский

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Comprehensive crystallographic engineering for high-efficiency and durable zinc metal anodes

Progress in Materials Science, Journal Year: 2025, Volume and Issue: unknown, P. 101453 - 101453

Published: Feb. 1, 2025

Language: Английский

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