Turning the Byproduct Zn4(OH)6SO4·xH2O into a Uniform Solid Electrolyte Interphase to Stabilize Aqueous Zn Anode

Xin, Wenli; Miao, Licheng; Zhang, Lei; Peng, Huiling; Yan, Zichao; Zhu, Zhiqiang

doi:10.1021/acsmaterialslett.1c00566

Cited by 78 publications

(46 citation statements)

References 54 publications

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“…[10] Chen et al demonstrated that SeO 2 additives (2 mm) is capable of forming ZnSe protective layer on the Zn surface, but the cycle stability under harsh test condition is still undesired. [9a] Other SEI forming agents have also been reported, including Zn(H 2 PO 4 ) 2 , [11] SnCl 2 , [12] DMSO, [9b] triethyl phosphate, [13] Zn(OH) 2 , [14] KPF 6 , [15] and In(OTf) 3. [16,5a,17] Despite great progress, building robust SEI still necessitates a substantial amount of electrolyte additives, increasing the electrolyte cost and the irreversible consumption of Zn cations and/or electrons.…”

Section: Doi: 101002/smll202203674mentioning

confidence: 99%

Long Shelf‐Life Efficient Electrolytes Based on Trace l‐Cysteine Additives toward Stable Zinc Metal Anodes

Huang

Zhao

Hao

et al. 2022

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The unstable anode/electrolyte interface (AEI) triggers the corrosion reaction and dendrite formation during cycling, hindering the practical application of zinc metal batteries. Herein, for the first time, l‐cysteine (Cys) is employed to serve as an electrolyte additive for stabilizing the Zn/electrolyte interface. It is revealed that Cys additives tend to initially approach the Zn surface and then decompose into multiple effective components for suppressing parasitic reactions and Zn dendrites. As a consequence, Zn|Zn symmetric cells using trace Cys additives (0.83 mm) exhibit a steady cycle life of 1600 h, outperforming that of prior studies. Additionally, an average Coulombic efficiency of 99.6% for 250 cycles is also obtained under critical test conditions (10 mA cm−2/5 mAh cm−2). Cys additives also enable Zn–V2O5 and Zn–MnO2 full cells with an enhanced cycle stability at a low N/P ratio. More importantly, Cys/ZnSO4 electrolytes are demonstrated to be still effective after resting for half year, favoring the practical production.

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Section: Doi: 101002/smll202203674mentioning

confidence: 99%

Long Shelf‐Life Efficient Electrolytes Based on Trace l‐Cysteine Additives toward Stable Zinc Metal Anodes

Huang

Zhao

Hao

et al. 2022

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“…S10 and S11 †). 61,62 Fig. S12 † presents the cyclic voltammetry (CV) curves of ZnkPANI full cells in the two electrolytes at 2 mV s À1 , both of which demonstrate the typical redox peaks of PANI, 61 suggesting that the addition of the DPA additive would not change the redox process of PANI.…”

Section: Resultsmentioning

confidence: 99%

Super-zincophilic additive induced interphase modulation enables long-life Zn anodes at high current density and areal capacity

et al. 2022

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“…On the other hand, the formation of ZnO byproducts with O 2 in the system may passivate the deposited zinc. [41,50] The Zn dendrites and ZnO eventually cause severe irreversibility and low efficiency of Zn anode. By adding low amounts of Li and Mn into Zn, however, we can inhibit the growth of Zn dendrites with a much more uniform deposition of Zn during long-time cycles.…”

Section: Electrochemical Properties Of the Znlimn Alloysmentioning

confidence: 99%

Highly Strengthened and Toughened Zn–Li–Mn Alloys as Long‐Cycling Life and Dendrite‐Free Zn Anode for Aqueous Zinc‐Ion Batteries

Zhang

Yang

et al. 2022

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Zn‐ion batteries (ZIBs) using aqueous electrolyte, recently, have been a hot topic owing to the high safety, low cost, and high specific energy capacity. However, the formation of dendrite and side reactions on the Zn anode during cycling inhibit the application of ZIBs. An advanced Zn anode by alloying a small amount of Li and Mn with Zn is hereby reported. It is found that Li and Mn can form cationic ions which restrain lateral diffusion of Zn ions and regulate zinc electrodeposition through the electrostatic shield mechanism. As a result, the formation of Zn dendrite is greatly inhibited. This process also mitigates the formation of Zn‐based byproduct and Zn passivation. Consequently, the symmetric ZnLiMn/ZnLiMn cell presents a small overpotential of 30 mV at 1 mA cm–2, greatly enhanced cycling durability (1000 h at a current density of 1 mA cm–2), and a dendrite‐free morphology after cycles. Moreover, the authors find that the ZnLiMn alloy has greatly enhanced mechanical properties. The assembled ZnLiMn/MnO2 full cell can retain 96% capacity after 400 cycles at 1 C. Thus, the alloying low‐cost Li/Mn strategy is very promising for large‐scale production of dendrite‐free Zn electrode in rechargeable ZIBs.

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Turning the Byproduct Zn₄(OH)₆SO₄·xH₂O into a Uniform Solid Electrolyte Interphase to Stabilize Aqueous Zn Anode

Cited by 78 publications

References 54 publications

Long Shelf‐Life Efficient Electrolytes Based on Trace l‐Cysteine Additives toward Stable Zinc Metal Anodes

Long Shelf‐Life Efficient Electrolytes Based on Trace l‐Cysteine Additives toward Stable Zinc Metal Anodes

Super-zincophilic additive induced interphase modulation enables long-life Zn anodes at high current density and areal capacity

Highly Strengthened and Toughened Zn–Li–Mn Alloys as Long‐Cycling Life and Dendrite‐Free Zn Anode for Aqueous Zinc‐Ion Batteries

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