Ultra‐Stable Zinc Metal Batteries Enabled by Adsorption‐Desorption Equilibrium of Zinc Ions at the Additive‐Mediated Interfacial Layers DOI

Zixiong Zhen,

Zhihang Liu, Yingqiang Li

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 29, 2025

Abstract Structural‐tunable organic electrolyte additives demonstrate critical significance in enhancing zinc anode stability and promoting practical applications of aqueous zinc‐ion batteries (AZIBs). However, while numerous have been reported to mitigate parasitic reactions anodes effectively, the fundamental understanding concerning additive molecular structures modulating interfacial chemistry remains insufficiently understood. In this work, a comparative investigation two adsorptive with similar elucidates role adsorption‐desorption equilibrium regulating transport kinetics. Piperidine‐2‐carboxylic acid (PPCA) exhibits superior capability accelerating across anode/electrolyte interface compared pyridine‐2‐carboxylic (PDCA), attributable its optimized adsorption configuration enhanced charge redistribution effects. Besides, PPCA layer poor H 2 O environment creates uniform ion flux, which decreases concentration polarization inhibits reactions. Consequently, Zn||Zn symmetric cells enable an exceptional cycle life over 4300 h at 1 mA cm −2 mAh . A high coulombic efficiency 99.8% after 1500 cycles is achieved for Zn||Cu additive, significantly better than PDCA additive. This work highlights structural regulation functional toward high‐performance AZIBs.

Язык: Английский

Zn2+ Mediator with Ultrahigh Capacity over 8 m Enabled by H1.07Ti1.73O4 Ion Sieve for Stable Zinc Metal Batteries DOI
Lin Huang, Xing Wang, Zihao Li

и другие.

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 14, 2025

Abstract Interfacial engineering is universally acknowledged as a dependable methodology to address the aqueous zinc metal interface issues. Although it quite effective, introduction of modification layer impedes interfacial ion transport kinetics some extent. Addressing this trade‐off between stability and flux critical for advancing zinc‐based energy storage systems. Herein, layered titanate (H 1.07 Ti 1.73 O 4 , HTO) medium enabling fast Zn 2+ ultrahigh concentration on anode surface proposed. It demonstrated that HTO uniquely facilitates enrichment through exchange interlayer H + ions, achieving an exceptionally high adsorption 8.35 m far exceeding electrolyte (2 ZnSO ). The serves dynamic bridge, establishing continuous conductive pathway, its inherent negative charge selectively block sulfate anion (SO 2− ) penetration, thus exhibiting dual functionality conductor sieve. protected (Zn@HTO) exhibits exceptional stability, nearly 2300 h cycling at current density 0.5 mA cm −2 over 3900 5 . Furthermore, Zn@HTO//ZnVO full cell demonstrates prolonged operational stability. This strategy provides significant stride in breaking limitation concentration, thereby fast, stable electrochemical reactions.

Язык: Английский

Процитировано

0
Weak Dipole Effect Customized Zinc Ion‐Rich Protective Layer for Lean‐Electrolyte Zinc Metal Batteries DOI
Yifan Pan,

Doudou Feng,

Yanchun Xie

и другие.

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 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

Язык: Английский

Процитировано

0
Ultra‐Stable Zinc Metal Batteries Enabled by Adsorption‐Desorption Equilibrium of Zinc Ions at the Additive‐Mediated Interfacial Layers DOI

Zixiong Zhen,

Zhihang Liu, Yingqiang Li

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 29, 2025

Abstract Structural‐tunable organic electrolyte additives demonstrate critical significance in enhancing zinc anode stability and promoting practical applications of aqueous zinc‐ion batteries (AZIBs). However, while numerous have been reported to mitigate parasitic reactions anodes effectively, the fundamental understanding concerning additive molecular structures modulating interfacial chemistry remains insufficiently understood. In this work, a comparative investigation two adsorptive with similar elucidates role adsorption‐desorption equilibrium regulating transport kinetics. Piperidine‐2‐carboxylic acid (PPCA) exhibits superior capability accelerating across anode/electrolyte interface compared pyridine‐2‐carboxylic (PDCA), attributable its optimized adsorption configuration enhanced charge redistribution effects. Besides, PPCA layer poor H 2 O environment creates uniform ion flux, which decreases concentration polarization inhibits reactions. Consequently, Zn||Zn symmetric cells enable an exceptional cycle life over 4300 h at 1 mA cm −2 mAh . A high coulombic efficiency 99.8% after 1500 cycles is achieved for Zn||Cu additive, significantly better than PDCA additive. This work highlights structural regulation functional toward high‐performance AZIBs.

Язык: Английский

Процитировано

0