Fundamentals and perspectives of electrolyte additives for aqueous zinc-ion batteries

Guo, Shan; Qin, Liping; Zhang, Tengsheng; Zhou, Miao; Zhou, Jiang; Fang, Guozhao

doi:10.1016/j.ensm.2020.10.019

Cited by 414 publications

(291 citation statements)

References 107 publications

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“…Compared with bare Zn electrode, the SEI–Zn electrode exhibited significantly enhanced hydrophilicity, which was favorable for homogeneous Zn deposition by reducing the interfacial free energy between the Zn electrode and the electrolyte. [ 33 ]…”

Section: Figurementioning

confidence: 99%

“…[ 31,32 ] Under long‐term cycling, the unfavorable Zn dendrites, dead Zn, and side reactions proliferate at the electrode–electrolyte interface, leading to continuous consumption of the active Zn and electrolyte. [ 33 ] In most previous reports on AZIBs, however, greatly excessive Zn anode and flooded electrolyte were used to expand their cycle life, which not only mask the problem of low Zn utilization and electrolyte‐induced side reactions, but also make the results difficult to compare and interpret. Attaining long‐term cyclability of AZIBs under practical conditions is urgently needed for the development of rechargeable AZIBs for real applications.…”

mentioning

confidence: 99%

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Electrolyte Design for In Situ Construction of Highly Zn²⁺‐Conductive Solid Electrolyte Interphase to Enable High‐Performance Aqueous Zn‐Ion Batteries under Practical Conditions

et al. 2021

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Rechargeable aqueous Zn‐ion batteries promise high capacity, low cost, high safety, and sustainability for large‐scale energy storage. The Zn metal anode, however, suffers from the dendrite growth and side reactions that are mainly due to the absence of an appropriate solid electrolyte interphase (SEI) layer. Herein, the in situ formation of a dense, stable, and highly Zn2+‐conductive SEI layer (hopeite) in aqueous Zn chemistry is demonstrated, by introducing Zn(H2PO4)2 salt into the electrolyte. The hopeite SEI (≈140 nm thickness) enables uniform and rapid Zn‐ion transport kinetics for dendrite‐free Zn deposition, and restrains the side reactions via isolating active Zn from the bulk electrolyte. Under practical testing conditions with an ultrathin Zn anode (10 µm), a low negative/positive capacity ratio (≈2.3), and a lean electrolyte (9 µL mAh−1), the Zn/V2O5 full cell retains 94.4% of its original capacity after 500 cycles. This work provides a simple yet practical solution to high‐performance aqueous battery technology via building in situ SEI layers.

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Section: Figurementioning

confidence: 99%

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confidence: 99%

Electrolyte Design for In Situ Construction of Highly Zn²⁺‐Conductive Solid Electrolyte Interphase to Enable High‐Performance Aqueous Zn‐Ion Batteries under Practical Conditions

et al. 2021

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“…The fewer by‐products were detected on the Zn electrode with TEAB and BTAB, suggesting the additions of TEAB and BTAB were beneficial to inhibit the hydrogen evolution of Zn electrodes and formation of by‐products [7c,15,17] . Besides, compared to the blank electrolyte, the electrolyte with TEAB is capable of inducing the Zn deposition along the lower energy (002) plane since the ratio of peak intensity for (002) and (100) planes is higher (2.14 for TEAB electrolyte vs. 1.67 for blank electrolyte), indicating that the adsorption of the cations of these additives does lead to the preference of the growth orientation towards the lowest surface energy [9a] …”

Section: Resultsmentioning

confidence: 99%

“…It is well known that organic compounds can form a functional layer in situ at the interface between the anode and electrolyte [9a,11] . With suitable molecular configurations and concentrations, organic compounds are capable of facilitating compact and homogenous zinc electrodeposition, thereby improving the coulombic efficiency of zinc anodes and the cycling performance of the batteries [6,12] .…”

Section: Introductionmentioning

confidence: 99%

Highly Stable Plating/Stripping Behavior of Zinc Metal Anodes in Aqueous Zinc Batteries Regulated by Quaternary Ammonium Cationic Salts

et al. 2021

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Aqueous zinc‐ion batteries (AZIBs) have attracted wide attention as large‐scale energy storage systems, owing to their obvious merits such as high safety, low cost, and simple maintenance. However, the development of AZIBs is seriously hindered by Zn dendrite‐induced low efficiency, cell fading, and even cell short‐circuiting. Unlike the traditional anode modification strategies, this work stabilized the Zn anode by functionalizing the aqueous electrolyte with a series of quaternary ammonium cationic compounds. The cations of the compounds can be adsorbed on the surface of the metallic Zn during electrodeposition process, which alters the nucleation and deposition behavior of zinc ions according to the molecular structure of the cations. Tetraethyl ammonium bromide (TEAB) was, for the first time, demonstrated to guide homogeneous Zn deposition, thereby inhibiting the growth of dendrites in near‐neutral electrolytes. Highly reversible Zn stripping/plating performance with an average coulombic efficiency of 99.7 % is achieved. Particularly, the Zn−Zn symmetric cell based on TEAB‐containing electrolyte exhibits an ultra‐long cycling time of 3000 h at 1 mA cm−2 and even 800 h at 5 mA cm−2; the Zn−MnO2 full cell shows stable cycling under the condition of the practical‐level mass loading.

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“…It is well known, as a vital component of the ZIBs, the electrolyte provides the basic operating environment to guarantee the long-standing stability and endurability of the battery [14][15][16]. A high-quality electrolyte could improve the performance of ZIBs.…”

Section: Introductionmentioning

confidence: 99%

Inorganic Colloidal Electrolyte for Highly Robust Zinc-Ion Batteries

et al. 2021

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Zinc-ion batteries (ZIBs) is a promising electrical energy storage candidate due to its eco-friendliness, low cost, and intrinsic safety, but on the cathode the element dissolution and the formation of irreversible products, and on the anode the growth of dendrite as well as irreversible products hinder its practical application. Herein, we propose a new type of the inorganic highly concentrated colloidal electrolytes (HCCE) for ZIBs promoting simultaneous robust protection of both cathode/anode leading to an effective suppression of element dissolution, dendrite, and irreversible products growth. The new HCCE has high Zn2+ ion transference number (0.64) endowed by the limitation of SO42−, the competitive ion conductivity (1.1 × 10–2 S cm−1) and Zn2+ ion diffusion enabled by the uniform pore distribution (3.6 nm) and the limited free water. The Zn/HCCE/α-MnO2 cells exhibit high durability under both high and low current densities, which is almost 100% capacity retention at 200 mA g−1 after 400 cycles (290 mAh g−1) and 89% capacity retention under 500 mA g−1 after 1000 cycles (212 mAh g−1). Considering material sustainability and batteries’ high performances, the colloidal electrolyte may provide a feasible substitute beyond the liquid and all-solid-state electrolyte of ZIBs.

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Fundamentals and perspectives of electrolyte additives for aqueous zinc-ion batteries

Cited by 414 publications

References 107 publications

Electrolyte Design for In Situ Construction of Highly Zn²⁺‐Conductive Solid Electrolyte Interphase to Enable High‐Performance Aqueous Zn‐Ion Batteries under Practical Conditions

Electrolyte Design for In Situ Construction of Highly Zn²⁺‐Conductive Solid Electrolyte Interphase to Enable High‐Performance Aqueous Zn‐Ion Batteries under Practical Conditions

Highly Stable Plating/Stripping Behavior of Zinc Metal Anodes in Aqueous Zinc Batteries Regulated by Quaternary Ammonium Cationic Salts

Inorganic Colloidal Electrolyte for Highly Robust Zinc-Ion Batteries

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Fundamentals and perspectives of electrolyte additives for aqueous zinc-ion batteries

Cited by 414 publications

References 107 publications

Electrolyte Design for In Situ Construction of Highly Zn2+‐Conductive Solid Electrolyte Interphase to Enable High‐Performance Aqueous Zn‐Ion Batteries under Practical Conditions

Electrolyte Design for In Situ Construction of Highly Zn2+‐Conductive Solid Electrolyte Interphase to Enable High‐Performance Aqueous Zn‐Ion Batteries under Practical Conditions

Highly Stable Plating/Stripping Behavior of Zinc Metal Anodes in Aqueous Zinc Batteries Regulated by Quaternary Ammonium Cationic Salts

Inorganic Colloidal Electrolyte for Highly Robust Zinc-Ion Batteries

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Electrolyte Design for In Situ Construction of Highly Zn²⁺‐Conductive Solid Electrolyte Interphase to Enable High‐Performance Aqueous Zn‐Ion Batteries under Practical Conditions

Electrolyte Design for In Situ Construction of Highly Zn²⁺‐Conductive Solid Electrolyte Interphase to Enable High‐Performance Aqueous Zn‐Ion Batteries under Practical Conditions