Cellulose-based gel-type electrolyte fabricated by lyophilization to enable uniform Li+ ion flux distribution for stable Li metal anodes with high-rate capability

Zhong, Guoqiang; Wang, Peihua; Lu, Kaijie; Cao, Haichuan; Shi, Wenhui; Yan, Wei-Yong; Zhu, Yusong

doi:10.1016/j.apmt.2022.101705

Cited by 4 publications

(3 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These dendrites could cause perforations in the system, leading to safety issues. 18 Better uniform dispersion of potassium was observed in the chemically crosslinked membrane.…”

Section: Resultsmentioning

confidence: 97%

“…[14][15][16] On the other hand, freeze-drying through lyophilization is another inexpensive physical crosslinking method in which the sublimation process at low temperatures and under vacuum conditions produces homogeneous porous polymeric membranes with reduced shrinkage and high mechanical strength. 17 Zhong et al 18 designed a porous methyl cellulose-based gel polymer electrolyte fabricated through freeze-drying that exhibited high ionic conductivity, low interface impedance, and low activation energy for Li + migration due to the presence of micropores in the matrix, capable of retaining large volumes of liquid electrolyte.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Enhancing Electrochemical Performance of Zinc-Air Batteries Using Freeze Crosslinked Carboxymethylcellulose-Chitosan Hydrogels as Electrolytes

Bósquez-Cáceres

Béjar

Álvarez‐Contreras

et al. 2023

J. Electrochem. Soc.

View full text Add to dashboard Cite

Zinc-air batteries (ZABs) are of great interest as a replacement option for subsequent technologies to lithium-ion batteries. Still, the need for suitable electrolyte materials limits their application in commercial devices. In this study, a green hydrogel composed of chitosan and carboxymethylcellulose was synthesized with the use of citric acid as a chemical crosslinker, physical freezing-thawing, and freezing-drying strategies. Physicochemical, thermal, and electrochemical characterizations were performed to study the effects of the proposed synthesis' on the performance of the hydrogels for the desired application. The obtained hydrogels showed a porous morphology that was doped with a 12 M KOH solution. Adequate complexation of K+ cations and the polymer chains was observed. The resulting membranes showed an enhanced ionic conductivity of 0.39 S cm‒1, attributed to the pores and channels generated by the crosslinking strategies, contributing to the pathways for ions to move easily. In addition, the temperature dependence of the conduction mechanism was confirmed in the temperature range of 0 to 70°C. The electrolytes were employed in ZABs prototypes, achieving maximum power density of 117 mW cm‒2 and specific capacitance of 1899 mAh g‒1. The presented results show the promising properties of these hydrogels as electrolytes for green storage devices.

show abstract

“…These dendrites could cause perforations in the system, leading to safety issues. 18 Better uniform dispersion of potassium was observed in the chemically crosslinked membrane.…”

Section: Resultsmentioning

confidence: 97%

mentioning

confidence: 99%

Enhancing Electrochemical Performance of Zinc-Air Batteries Using Freeze Crosslinked Carboxymethylcellulose-Chitosan Hydrogels as Electrolytes

Bósquez-Cáceres

Béjar

Álvarez‐Contreras

et al. 2023

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…In general, the absorbed zinc ions tend to diffuse along the surface, seeking energetically favorable locations, such as tip locations or defect regions, to minimize the surface energy of bare Zn atoms . However, the cross-linked hydrogel framework can provide abundant pathways for Zn 2+ transport, and the 3D interconnected porous structure promotes this process, thereby homogenizing the Zn 2+ flux. ,,, This leads to a stable and continuous 3D spatial Zn accumulation on the electrode surface (Figure b). Further verification that PBXHE can inhibit the 2D diffusion of zinc ions and regulate the growth of zinc deposits on the 002 crystal plane was carried out by SEM and XRD analysis of Zn electrodes in various Zn||Zn symmetric cells after 50 and 100 h of cycling (SEM images and XRD plots of pristine zinc foil are shown in Figures S5 and i).…”

Section: Results and Discussionmentioning

confidence: 99%

Controlling Dendrite Growth with Xylan-Enhanced Hydroxyl-Rich Hydrogel Electrolyte for Efficient Zn-Ion Energy Storage

Xiao,

Guo,

et al. 2023

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

The development of sustainable and safe energy storage systems is becoming increasingly important, which will drive the boom of aqueous Zn-based energy storage devices. However, it is challenging to overcome the dendrite and side-reaction issues of Zn anodes and extend the applications of devices. Herein, we design a polysaccharide-enhanced hydrogel electrolyte (PBXHE: PVA/Borax/ Xylan/Zn(OTf) 2 ) with OH-rich xylan to tackle these problems. The resultant PBXHE, dually cross-linked chemically and physically, showcases mechanical robustness. The incorporated xylan polysaccharide facilitates the formation of a well-developed interconnected porous network within the hydrogel, promoting electrolyte ion mobility. Concurrently, the coordinated interaction between the polar hydroxyl groups in xylan and polyvinyl alcohol (PVA) induces the uniform deposition of zinc ions. Therefore, the symmetric Zn|PBXHE|Zn cell exhibits remarkable durability, operating continuously for 520 h at 1 mA cm −2 and accumulating a total capacity of 3000 mA h cm −2 at 20 mA cm −2 . The as-fabricated hydrogel-based zinc-ion hybrid capacitor retains almost 90% of its initial capacity after 20,000 cycles, with a peak energy density of 82.1 W h kg −1 at 193.7 W kg −1 power density. This work provides a feasible strategy for engineering environmentally benign polysaccharide-assisted hydrogel electrolytes to protect Zn anodes for the sustainable development of competitive Zn-based energy storage devices.

show abstract

Agar-based hydrogel polymer electrolyte for high-performance zinc-ion batteries at all climatic temperatures

Zheng¹,

Shi²,

Zhou³

et al. 2023

iScience

View full text Add to dashboard Cite

Cellulose-based gel-type electrolyte fabricated by lyophilization to enable uniform Li+ ion flux distribution for stable Li metal anodes with high-rate capability

Cited by 4 publications

References 59 publications

Enhancing Electrochemical Performance of Zinc-Air Batteries Using Freeze Crosslinked Carboxymethylcellulose-Chitosan Hydrogels as Electrolytes

Enhancing Electrochemical Performance of Zinc-Air Batteries Using Freeze Crosslinked Carboxymethylcellulose-Chitosan Hydrogels as Electrolytes

Controlling Dendrite Growth with Xylan-Enhanced Hydroxyl-Rich Hydrogel Electrolyte for Efficient Zn-Ion Energy Storage

Agar-based hydrogel polymer electrolyte for high-performance zinc-ion batteries at all climatic temperatures

Contact Info

Product

Resources

About