Ultrafast charging and ultralong cycle life in solid-state Al-ion batteries

Shen, Xuejing; Sun, Tao; Wu, Zhanjun; Tan, Li

doi:10.1039/d2ta00630h

Cited by 6 publications

(6 citation statements)

References 40 publications

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“…Similarly high ionic conductivities have been reported in polymer electrolytes with comparable ionic liquid loadings. [ 23 ] Complex plane and Bode plots of the impedance spectra obtained from the PE‐6‐ y electrolytes are shown in Figure S4 (Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

Solid Polymer Electrolytes with Enhanced Electrochemical Stability for High‐Capacity Aluminum Batteries

Leung,

Gordon,

Messinger

et al. 2024

Advanced Energy Materials

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Chloroaluminate ionic liquids are commonly used electrolytes in rechargeable aluminum batteries due to their ability to reversibly electrodeposit aluminum at room temperature. Progress in aluminum batteries is currently hindered by the limited electrochemical stability, corrosivity, and moisture sensitivity of these ionic liquids. Here, a solid polymer electrolyte based on 1‐ethyl‐3‐methylimidazolium chloride‐aluminum chloride, polyethylene oxide, and fumed silica is developed, exhibiting increased electrochemical stability over the ionic liquid while maintaining a high ionic conductivity of ≈13 mS cm−1. In aluminum–graphite cells, the solid polymer electrolytes enable charging to 2.8 V, achieving a maximum specific capacity of 194 mA h g−1 at 66 mA g−1. Long‐term cycling at 2.7 V showed a reversible capacity of 123 mA h g−1 at 360 mA g−1 and 98.4% coulombic efficiency after 1000 cycles. Solid‐state nuclear magnetic resonance spectroscopy measurements reveal the formation of five‐coordinate aluminum species that crosslink the polymer network to enable a high ionic liquid loading in the solid electrolyte. This study provides new insights into the molecular‐level design and understanding of polymer electrolytes for high‐capacity aluminum batteries with extended potential limits.

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Section: Resultsmentioning

confidence: 99%

Solid Polymer Electrolytes with Enhanced Electrochemical Stability for High‐Capacity Aluminum Batteries

Leung,

Gordon,

Messinger

et al. 2024

Advanced Energy Materials

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“…[ 556–558 ] Shen et al. [ 559 ] reported that soft GPEs provide excess nucleation sites for Al deposits, illustrating the better Al 3+ ‐plate/strip for soft GPE than rigid GPEs with fractal branched Al‐dendrites. PEA‐GPE displays σ Al 3+ ≈1.46 mS cm −1 and EWs ≈3 V versus Al/Al 3+ with minimal charge‐transfer resistance implying the stable Al//Al interface polarizations.…”

Section: Anode Interface Chemistrymentioning

confidence: 99%

“…[555] Literature shows the much effort for ILs (50-90 wt%) encapsulated polymer electrolytes such as PVDF, PEO, PAM, PEA, or derived MOFs as GPEs for AIBs; however, poor charge-/mass-transport kinetics for polymers or MOFs, sluggish Al 3+ -ion diffusion, and high interfacial resistance for Al//SEs limits their use for AIBs. [556][557][558] Shen et al [559] reported that soft GPEs provide excess nucleation sites for Al deposits, illustrating the better Al 3+ -plate/strip for soft GPE than rigid GPEs with fractal branched Al-dendrites. PEA-GPE displays 𝜎 Al 3+ ≈1.46 mS cm −1 and EWs ≈3 V versus Al/Al 3+ with minimal charge-transfer resistance implying the stable Al//Al interface polarizations.…”

Section: Aluminum-ion Batteries (Aibs)mentioning

confidence: 99%

Li, Na, K, Mg, Zn, Al, and Ca Anode Interface Chemistries Developed by Solid‐State Electrolytes

Shinde,

Wagh,

Kim

et al. 2023

Advanced Science

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Solid‐state batteries (SSBs) have received significant attention due to their high energy density, reversible cycle life, and safe operations relative to commercial Li‐ion batteries using flammable liquid electrolytes. This review presents the fundamentals, structures, thermodynamics, chemistries, and electrochemical kinetics of desirable solid electrolyte interphase (SEI) required to meet the practical requirements of reversible anodes. Theoretical and experimental insights for metal nucleation, deposition, and stripping for the reversible cycling of metal anodes are provided. Ion transport mechanisms and state‐of‐the‐art solid‐state electrolytes (SEs) are discussed for realizing high‐performance cells. The interface challenges and strategies are also concerned with the integration of SEs, anodes, and cathodes for large‐scale SSBs in terms of physical/chemical contacts, space‐charge layer, interdiffusion, lattice‐mismatch, dendritic growth, chemical reactivity of SEI, current collectors, and thermal instability. The recent innovations for anode interface chemistries developed by SEs are highlighted with monovalent (lithium (Li+), sodium (Na+), potassium (K+)) and multivalent (magnesium (Mg2+), zinc (Zn2+), aluminum (Al3+), calcium (Ca2+)) cation carriers (i.e., lithium‐metal, lithium‐sulfur, sodium‐metal, potassium‐ion, magnesium‐ion, zinc‐metal, aluminum‐ion, and calcium‐ion batteries) compared to those of liquid counterparts.

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“…These Al dendrites leave gaps or cracks on the anode interface, which further increase the interface resistance. [28] This phenomenon will lead to lower coulombic efficiency and capacity decay during cycling. In the past few years, some researchers developed quasi-solid state hydrogel electrolytes based on aqueous electrolytes for AIBs systems, but they just circumvented these intrinsic problems in aqueous AIBs of developing non-corrosive and flexible AIBs by using intercalationtype anode materials instead of metallic Al.…”

Section: Solid-state Aibsmentioning

confidence: 99%

“…Because of the nonhomogeneous Al deposition from Al 2 Cl 7 − anions. These Al dendrites leave gaps or cracks on the anode interface, which further increase the interface resistance [28] . This phenomenon will lead to lower coulombic efficiency and capacity decay during cycling.…”

Section: Challenges Of Solid‐state Zibs and Aibsmentioning

confidence: 99%

Solid State Zinc and Aluminum ion batteries: Challenges and Opportunities

et al. 2023

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Solid state zinc ion batteries (ZIBs) and aluminum ion batteries (AIBs) are deemed as promising candidates for supplying power in wearable devices due to merits of low‐cost, high safety, and tunable flexibility. However, their wide‐scale practical application is limited by various challenges, down to the material level. This review begins with elaboration of the root causes and their detrimental effect for four main limitations: electrode‐electrolyte interface contact, electrolyte ionic conductivity, mechanical strength and electrolyte voltage stability window. Thereafter, various strategies to mitigate each of the described limitation are discussed along with future research direction perspectives. Finally, to estimate the viability of these technologies for wearable applications, economic‐performance metrics are compared against Li‐ion batteries.

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Ultrafast charging and ultralong cycle life in solid-state Al-ion batteries

Abstract: Designing and fabricating solid-state batteries with a high-rate capability and a long cycle life remains a feat. Here, for the first time, a free-standing gel polymer electrolyte (GPE) that holds...

Cited by 6 publications

References 40 publications

Solid Polymer Electrolytes with Enhanced Electrochemical Stability for High‐Capacity Aluminum Batteries

Solid Polymer Electrolytes with Enhanced Electrochemical Stability for High‐Capacity Aluminum Batteries

Li, Na, K, Mg, Zn, Al, and Ca Anode Interface Chemistries Developed by Solid‐State Electrolytes

Solid State Zinc and Aluminum ion batteries: Challenges and Opportunities

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