An effective descriptor for the screening of electrolyte additives toward the stabilization of Zn metal anodes

Hong, Lin; Guan, Jingzhuo; Tan, Yiwei; Chen, Yao; Liu, Yu-Si; Huang, Wei; Yu, Chunyang; Zhou, Yongfeng; Chen, Jie-Sheng; Wang, Kai-Xue

doi:10.1039/d4ee00199k

Cited by 19 publications

(1 citation statement)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Zn//MnO 2 full cells are appealing compared to previous reports, as shown in Figure S10 and summarized in Table S2. ,− MBA additives also contribute to an enhanced self-discharge performance via inhibiting the parasitic reactions. As shown in Figure d,e, after resting for 48 h, Zn//MnO 2 full cells retain 99.2% of the original capacity in Zn 1 N 20 electrolyte, which is much better than the cells in Zn 1 electrolytes (84.1%).…”

Section: Results and Discussionmentioning

confidence: 86%

Low-Cost Aqueous Electrolyte with MBA Additives for Uniform and Stable Zinc Deposition

Chen,

Xie,

Chen

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Aqueous zinc ion batteries (AZIBs) are attracting increasing research interest due to their intrinsic safety, low cost, and scalability. However, the issues including hydrogen evolution, interface corrosion, and zinc dendrites at anodes have seriously limited the development of aqueous zinc ion batteries. Here, N,N-methylenebis(acrylamide) (MBA) additives with −CONH- groups are introduced to form hydrogen bonds with water and suppress H2O activity, inhibiting the occurrence of hydrogen evolution and corrosion reactions at the interface. In situ optical microscopy demonstrates that the MBA additive promotes the uniform deposition of Zn2+ and then suppresses the dendrite growth on the zinc anode. Therefore, Zn//Ti asymmetric batteries demonstrate a high plating/stripping efficiency of 99.5%, while Zn//Zn symmetric batteries display an excellent cycle stability for more than 1000 h. The Zn//MnO2 full cells exhibit remarkable cycling stability for 700 cycles in aqueous electrolytes with MBA additives. The additive engineering via MBA achieved the dendrite-free Zn anodes and stable full batteries, which is favorable for advanced AZIBs in practical applications.

show abstract

Section: Results and Discussionmentioning

confidence: 86%

Low-Cost Aqueous Electrolyte with MBA Additives for Uniform and Stable Zinc Deposition

Chen,

Xie,

Chen

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

Multifunctional pH‐Controlling Electrolyte Enables Ultrastable and Highly Reversible Zinc Anode

Li,

Zhang

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

The application of aqueous zinc‐ion batteries in large‐scale energy storage systems is significantly limited by the hydrogen evolution reaction (HER). Although conventional pH‐adjusting additives can reduce the overpotential of HER, it is imperative to simultaneously modulate the composition of the solid electrolyte interphase (SEI) and the electrical double layer (EDL) structure to enhance the utilization of zinc metal. This research develops a multifunctional pH‐controlling additive, the bis(2‐hydroxyethyl)amino‐tris(hydroxymethyl)methane (BT). First, the addition of BT increases the pH of the electrolyte to 5.9, which is within its effective buffer zone, and simultaneously reduces the HER potential to −1.107 V versus Ag/AgCl. Second, the inhibitory effect on HER can be further enhanced by the preferential adsorption of BT molecules containing multiple hydroxyl functional groups on the zinc anode, leading to a reduction in the number of active water molecules in the EDL. Third, BT molecules participate in the solvation structure to accomplish preferential reduction, which promotes the uniform deposition of Zn2+ ions by forming nitrogen‐containing SEI. Ultimately, the symmetric battery accomplishes 2700 stable cycles in BT‐3 electrolyte. More crucially, the corresponding Zn//MnO2 full battery (1 A g−1) is able to release a specific capacity of 117.2 mA h g−1 after 600 cycles.

show abstract

Switching Hydrophobic Interface with Ionic Valves for Reversible Zinc Batteries

Tang,

Zhang,

Han

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

Developing hydrophobic interface has proven effective in addressing dendrite growth and side reactions during zinc (Zn) plating in aqueous Zn batteries. However, this solution inadvertently impedes the solvation of Zn2+ with H2O and subsequent ionic transport during Zn stripping, leading to insufficient reversibility. Herein, an adaptive hydrophobic interface that can be switched “on” and “off” by ionic valves to accommodate the varying demands for interfacial H2O during both the Zn plating and stripping processes, is proposed. This concept is validated using octyltrimethyl ammonium bromide (C8TAB) as the ionic valve, which can initiatively establish and remove a hydrophobic interface in response to distinct electric‐field directions during Zn plating and stripping, respectively. Consequently, the Zn anode exhibits an extended cycling life of over 2500 h with a high Coulombic efficiency of ≈99.8%. The full cells also show impressive capacity retention of over 85% after 1 000 cycles at 5 A g−1. These findings provide a new insight into interface design for aqueous metal batteries.

show abstract

An effective descriptor for the screening of electrolyte additives toward the stabilization of Zn metal anodes

Abstract: Introduction of additives into aqueous electrolyte holds great potential in suppressing dendrite growth and improving the stability of Zn anode. However, no relevant theory or descriptor could effectively support the...

Cited by 19 publications

References 60 publications

Low-Cost Aqueous Electrolyte with MBA Additives for Uniform and Stable Zinc Deposition

Low-Cost Aqueous Electrolyte with MBA Additives for Uniform and Stable Zinc Deposition

Multifunctional pH‐Controlling Electrolyte Enables Ultrastable and Highly Reversible Zinc Anode

Switching Hydrophobic Interface with Ionic Valves for Reversible Zinc Batteries

Contact Info

Product

Resources

About