Enabling highly reversible Zn anode via an interfacial preferentially adsorbed additive containing nucleophilic groups DOI Open Access
Canglong Li,

Hongli Qi,

Jie Huang

и другие.

Microstructures, Год журнала: 2025, Номер 5(2)

Опубликована: Март 21, 2025

The cyclability and reversibility of aqueous zinc-ion batteries (AZIBs) are severely hampered by the safety concerns arising from Zn dendrite growth. Therefore, a stable anode with inhibited dendrites side reactions is crucial for AZIBs. Herein, we utilized methyl acetoacetate (MA) as an additive to prevent growth enable highly reversible anodes. Benefiting nucleophilic groups (carbonyl groups) in MA, MA molecules can preferentially adsorb on anode/electrolyte interface (AEI), forming molecular protective layer. Such layers not only regulate migration deposition zinc ions, but also inhibit induced decomposition free H2O at AEI. symmetric cell addition achieves long-term cycling stability 1,500 h 2 mA cm-2 capacity mAh cm-2. In addition, Zn//NVO full using MA-contained electrolyte demonstrates high specific (138.4 g-1) outstanding retention (92.8% after 600 cycles) 1 A g-1. This work provides principle use ester-based additives suppress durable metal

Язык: Английский

Carboxyl‐CNTs Act as “Defensive Shield” to Boost Proton Insertion for Stable and Fast‐Charging Aqueous Zn‐Mn Batteries DOI Open Access
Yanchen Fan, Meng Xu, Qi Li

и другие.

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 13, 2025

Abstract Proton insertion mechanism with fast reaction kinetics is attracting more and attention for high‐rate durable aqueous Zn─MnO 2 batteries. However, hydrated Zn 2+ accompanied Jahn–Teller effect Mn 3+ disproportionation generally leads to sluggish rate capability irreversible structure transformation. Here, carboxyl‐carbon nanotubes supported α‐MnO nanoarrays (C─MnO ) cathode successfully fabricated by a convent grinding process high‐performance Specifically, the (CNTs) skeleton endows shorter ion diffusion route active sites proton adsorption, benefiting electron transport reversible evolution of MnO . More importantly, electronegative carboxyl groups Mn─O─C interfacial bonds can effectively restrain dissolution shuttle improved structural integrity redox reactivity. Consequently, C─MnO exhibits high capacity, superior capability, outstanding cycling stability over 10 000 cycles. Even at ultra‐high mass loading (20 mg cm −2 ), Zn//C─MnO punch cell displays excellent capacity (202 mAh) 94.5% retention after 114 cycles, providing new insights practical application advanced Zn‐Mn

Язык: Английский

Процитировано

0
Enabling highly reversible Zn anode via an interfacial preferentially adsorbed additive containing nucleophilic groups DOI Open Access
Canglong Li,

Hongli Qi,

Jie Huang

и другие.

Microstructures, Год журнала: 2025, Номер 5(2)

Опубликована: Март 21, 2025

The cyclability and reversibility of aqueous zinc-ion batteries (AZIBs) are severely hampered by the safety concerns arising from Zn dendrite growth. Therefore, a stable anode with inhibited dendrites side reactions is crucial for AZIBs. Herein, we utilized methyl acetoacetate (MA) as an additive to prevent growth enable highly reversible anodes. Benefiting nucleophilic groups (carbonyl groups) in MA, MA molecules can preferentially adsorb on anode/electrolyte interface (AEI), forming molecular protective layer. Such layers not only regulate migration deposition zinc ions, but also inhibit induced decomposition free H2O at AEI. symmetric cell addition achieves long-term cycling stability 1,500 h 2 mA cm-2 capacity mAh cm-2. In addition, Zn//NVO full using MA-contained electrolyte demonstrates high specific (138.4 g-1) outstanding retention (92.8% after 600 cycles) 1 A g-1. This work provides principle use ester-based additives suppress durable metal

Язык: Английский

Процитировано

0