Electrolyte Engineering via Competitive Solvation Structures for Developing Longevous Zinc Ion Batteries

Zhang, Xuemei; Deng, Zhiwen; Xu, Changhaoyue; Deng, Yan; Jia, Ye; Luo, Hang; Wu, Hao; Cai, Wenlong; Zhang, Yun

doi:10.1002/aenm.202302749

Cited by 43 publications

(2 citation statements)

References 64 publications

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“…This is in sharp contrast to Al foil with Exp–LiFSI (Figure f). The strong coordination strength anion of NO 3 – stabilizes the Al surface by forming insoluble complexes through competitive interactions with Al 3+ . The detailed mechanism of strong coordinating anions that bind with Al 3+ is illustrated in Figure d.…”

Section: Resultsmentioning

confidence: 99%

“…The strong coordination strength anion of NO 3 − stabilizes the Al surface by forming insoluble complexes through competitive interactions with Al 3+ . 58 The detailed mechanism of strong coordinating anions that bind with Al 3+ is illustrated in Figure 3d. This speculation is confirmed by the chemical evolution of the Al surface through XPS in the Li||Al asymmetric cells after potentialstatic etching.…”

Section: Characterizationmentioning

confidence: 99%

See 1 more Smart Citation

Disassociating Lithium Salts in Deep Eutectic Solvents and Inhibiting Aluminum Corrosion for Low-Temperature Lithium–Metal Batteries

Chen,

Wang,

Fan

et al. 2024

Energy Fuels

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Low-temperature lithium-ion (Li-ion) batteries necessitate high-disassociation Li salts in low melting point solvents to favor transport kinetics. While lithium bis-(fluorosulfonyl)imide (LiFSI) is being developed for low-temperature electrolytes due to its weakly coordinated anion that enables a high dissociation constant, the deep eutectic solvents (DESs) benefit electrolyte mobility. Such salt and solvent combination is expected to address challenges of freezing electrolytes, low charge carriers, and sluggish ion transport across interfaces encountered under subzero temperature conditions. However, LiFSI corrodes the aluminum (Al) foil and disconnects electron pathways between the active material and the Al current collector, endangering battery stability at high voltages. Herein, the strongly coordinated anion (nitride, NO 3 − ) is introduced into the DESs by high-dielectric-constant dimethyl sulfoxide (DMSO) to inhibit Al corrosion. The Al anodic voltage in Li||Al cells is extended to 4.6 V (vs Li + /Li). This rational-designed electrolyte enables the cell with an impressive low-temperature performance even at a high areal loading of 4.5 mAh cm −2 . The cell equipped with this electrolyte can be cycled over 200 cycles at −20 °C with inconspicuous capacity degradation. This work adopts disassociating Li salts in DESs and inhibiting Al corrosion, which is expected to enrich the fundamentals of mediating Li + transport and Al corrosion to promote lowtemperature Li-metal battery performances.

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Section: Resultsmentioning

confidence: 99%

Section: Characterizationmentioning

confidence: 99%

Disassociating Lithium Salts in Deep Eutectic Solvents and Inhibiting Aluminum Corrosion for Low-Temperature Lithium–Metal Batteries

Chen,

Wang,

Fan

et al. 2024

Energy Fuels

View full text Add to dashboard Cite

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Synergistic Corrosion Engineering on Metallic Manganese Toward High‐Performance Electrochemical Energy Storage

Sun,

Wang,

Lyv

et al. 2024

Adv Funct Materials

Self Cite

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MnO/rGO with enhanced electrochemical kinetic properties is widely investigated as electrode for high‐performance electrochemical energy storage (EES) devices. However, the synthesis of MnO/rGO via traditional methods suffers from low atomic utilization and complex techniques that are undesirable for practical implementation. Different from existing fabrication strategies, here using metallic manganese as Mn source, a novel, eco‐friendly, and corrosion engineering‐based approach to address the above issues is demonstrated. It is thermodynamically feasible as supported by the E‐pH analysis and for the first time, a significant synergetic effect is observed between NH4+ and GO in strengthening the metallic Mn corrosion reaction. Particularly, in the “ammonia circulation” process, the NH3 molecule, derived from NH4+, acts as a “carrier” for Mn2+ to facilitate its transfer by forming [Mn(NH3)2]2+, which effectively prevents “in situ corrosion”. The phase and structure evolution during the reaction are clarified, and the synergistic corrosion mechanism is also proposed. Benefiting from the efficient lithium‐ion evolution kinetics, Mn─O─C bond formed between MnO and rGO and outstanding structural integrity, the resultant MnO/rGO demonstrates exceptional EES performances in both lithium‐ion batteries and lithium‐ion capacitors. This finding will offer potential for mild, cost‐effective, and environmentally friendly fabrication of other graphene‐based metal oxide electrodes using corrosion engineering.

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Zwitterionic Organic Multifunctional Additive Stabilizes Electrodes for Reversible Aqueous Zn‐Ion Batteries

Zhang,

Liu,

Wang

et al. 2024

Adv Funct Materials

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Aqueous zinc‐ion batteries (AZIBs) exhibit significant potential for grid energy storage due to their low cost and safety. However, the commercial applications of AZIBs face challenges, particularly in the anode, such as zinc dendrites, hydrogen evolution reaction (HER), and zinc corrosion. In this study, a protonated triglycine (ggg) as a multifunctional electrolyte additive for AZIBs is employed. This ggg molecule can dissociate as zwitterion (both anion and cation) in mildly acidic ZnSO4 electrolytes. The NH3+ cation in ggg molecule can adsorb on the surface of the zinc anode, regulating the deposition of Zn2+ and slowing down the side reactions, and the spontaneously dissociated ggg anions will combine with Zn2+ to regulate the solvated Zn2+ chemistry in the electrolyte, establishing the electrostatic interaction via the strong adsorption ability to Zn2+. Theoretical calculations indicate that ggg molecule demonstrates a strong affinity toward Zn2+, enabling the reconstruction of Zn(H2O)62+ and facilitating subsequent de‐solvation processes. As a result, Zn||Zn symmetric cells in ZnSO4/0.2 mM ggg electrolyte exhibited an extended cycling lifetime of ≈4500 h. Furthermore, the Zn||MnO2 full battery demonstrated enhanced capacity and cycling performance with the addition of ggg molecule. This study provides valuable insights into constructing a highly reversible electrolyte for AZIBs.

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Electrolyte Engineering via Competitive Solvation Structures for Developing Longevous Zinc Ion Batteries

Cited by 43 publications

References 64 publications

Disassociating Lithium Salts in Deep Eutectic Solvents and Inhibiting Aluminum Corrosion for Low-Temperature Lithium–Metal Batteries

Disassociating Lithium Salts in Deep Eutectic Solvents and Inhibiting Aluminum Corrosion for Low-Temperature Lithium–Metal Batteries

Synergistic Corrosion Engineering on Metallic Manganese Toward High‐Performance Electrochemical Energy Storage

Zwitterionic Organic Multifunctional Additive Stabilizes Electrodes for Reversible Aqueous Zn‐Ion Batteries

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