Monosodium glutamate, an effective electrolyte additive to enhance cycling performance of Zn anode in aqueous battery

Zhong, Yun; Cheng, Zexiao; Zhang, Huangwei; Li, Jianbo; Liu, Dongdong; Liao, Yaqi; Meng, Jintao; Shen, Yue; Huang, Yunhui

doi:10.1016/j.nanoen.2022.107220

Cited by 165 publications

(126 citation statements)

References 41 publications

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“…[20][21][22][23] Notably, electrolyte additives have attracted much attention due to their high efficiency, low cost, and environmental friendliness for Zn-anode modication. 24 Electrolyte additives can enhance the ionic conductivity by increasing the type and number of the conductive ions and widen the working potential window by inhibiting the oxygen evolution and hydrogen evolution reactions. 25 Additionally, lowcontent electrolyte additives have little inuence on energy and power density of the AZMBs, showing good prospects for largescale applications.…”

Section: Introductionmentioning

confidence: 99%

A polyamino acid with zincophilic chains enabling high-performance Zn anodes

et al. 2022

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Section: Introductionmentioning

confidence: 99%

A polyamino acid with zincophilic chains enabling high-performance Zn anodes

et al. 2022

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“…[8,9] The dendric Zn is mainly caused by the nonuniform electric field distribution and concentration polarization at the electrolyte-electrode interface, which increases the specific surface area of the anode and exacerbates surface-dependent parasitic reactions. [10,11] In turn, baneful parasitic reactions drive by-product formation and flagrant dendrite growth. [12] Especially, such issues are serious in conventional liquid electrolytes (LEs) due to the uncontrolled irregular ion migration and high-activity free water.…”

mentioning

confidence: 99%

Kinetics‐Boosted Effect Enabled by Zwitterionic Hydrogel Electrolyte for Highly Reversible Zinc Anode in Zinc‐Ion Hybrid Micro‐Supercapacitors

Zhang

Guo

et al. 2022

Advanced Energy Materials

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Despite impressive merits of complementary charge‐storage mechanisms for aqueous Zn‐ion hybrid micro‐supercapacitors (ZHMSCs), it remains a challenge to solve dendrite and parasitic reactions issues of Zn anodes. Herein, a kinetics‐boosted strategy of Zn2+ transport and desolvation of hydrated Zn2+ is proposed by engineering zwitterionic P(AM‐co‐SBMA) hydrogel electrolyte (PASHE) for highly reversible Zn plating/stripping. Mechanically robust and chemically anchored PASHE features zwitterionic groups for constructing ion migration channels and immobilizing water molecules, which accelerates Zn2+ migration for an ultrahigh transfer number (0.84) and alleviates water‐related parasitic reactions. Theoretical calculations combined with experimental results reveal that sulfobetaine sulfonate anions endow PASHE with improved desolvation kinetics and the ability to coordinate Zn2+ flux and electric field distributions at the electrolyte–electrode interface. Thus, Zn anodes exhibit excellent electrochemical performance involving high average coulombic efficiency of 99.4% in Zn|PASHE|Cu cell as well as high cumulative capacity of 2000 mAh cm−2 (20 mA cm−2, 1 mAh cm−2) and depth of discharge of 80.9% (20 mA cm−2, 10 mAh cm−2) in Zn|PASHE|Zn cells. Furthermore, ZHMSCs based on PASHE deliver excellent flexibility and cyclability for energy‐storage applications. This work provides useful insights on hydrogel electrolyte engineering for developing high‐performance Zn anodes and derived energy‐storage devices.

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“…In Figure 9(a), the impedance of the Zn//Zn symmetrical cell is nearly 5 times larger than that of the NTP-C@Zn// NTP-C@Zn symmetrical cell before cycling, which is due to the severe side reactions that bring about the generation of electron-insulating metal oxide/hydroxide. Furthermore, chronoamperometry (CA) tests were conducted to study the Zn deposition behavior on bare Zn and NTP-C@Zn at a constant overpotential of −150 mV within 120 s. The changes in current density with time can reflect the surface variation and the process of nucleation [61]. As exhibited in Figure 9(b), the current density keeps increasing for 120 s in the Zn//Zn symmetrical cell, implying the increase of effective electrode area under rampant 2D diffusion.…”

Section: Energy Materials Advancesmentioning

confidence: 99%

Regulating Uniform Zn Deposition via Hybrid Artificial Layer for Stable Aqueous Zn-Ion Batteries

et al. 2022

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Aqueous Zn-ion batteries (ZIBs) have great potential as promising candidates for next-generation energy conversion and storage devices, benefiting from competitive theoretical capacity, low cost, and high security. However, further applications of ZIBs are impeded by dendrite generation and side reactions. Herein, considering that Zn dendrites are caused by nonuniform metal deposition, involving uneven electric field and Zn2+ ion flux, a dual-functional carbon-coated NaTi2(PO4)3 (NTP-C) artificial protective layer with large surface area is constructed onto the surface of metallic Zn to stabilize Zn anode and regulate uniform Zn deposition. Benefiting from a synergistic strategy, NTP-C coating not only takes advantages of carbon to provide abundant Zn deposition sites to homogenize nucleation, adjust electric field distribution, and reduce local current density but also utilizes the ionic channel in NTP structure to modulate the distribution of Zn2+ flux at the same time. Consequently, the NTP-C@Zn symmetrical cell exhibits a stable cycling for more than 600 h with a low polarization (18.6 mV) at 1 mA cm−2/1 mAh cm−2. Especially, the NTP-C@Zn symmetrical cell even enables a steady plating/stripping process at a harsh condition (100 mA cm−2) without short circuit, indicating a potential application of high-load electrodes or supercapacitors. Furthermore, the NTP-C@Zn//α-MnO2 full cell also displays enhanced electrochemical performance for 1200 cycles with a capacity retention of 76.6% under 5 C (~1.5 A g−1). This work provides a synergistic strategy combining two protective mechanisms and delivers new inspirations for the improvement of stable Zn anode in aqueous ZIBs.

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Monosodium glutamate, an effective electrolyte additive to enhance cycling performance of Zn anode in aqueous battery

Cited by 165 publications

References 41 publications

A polyamino acid with zincophilic chains enabling high-performance Zn anodes

A polyamino acid with zincophilic chains enabling high-performance Zn anodes

Kinetics‐Boosted Effect Enabled by Zwitterionic Hydrogel Electrolyte for Highly Reversible Zinc Anode in Zinc‐Ion Hybrid Micro‐Supercapacitors

Regulating Uniform Zn Deposition via Hybrid Artificial Layer for Stable Aqueous Zn-Ion Batteries

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