Trade-off between H₂O-rich and H₂O-poor electric double layers enables highly reversible Zn anodes in aqueous Zn-ion batteries

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(7), P. 2566 - 2575

Published: Jan. 1, 2024

Trade-off between H 2 O-rich and O-poor EDLs to balance dead Zn dendrites side reactions, realizing highly reversible anodes.

Language: Английский

---

Air-Stable and Low-Cost High-Voltage Hydrated Eutectic Electrolyte for High-Performance Aqueous Aluminum-Ion Rechargeable Battery with Wide-Temperature Range

ACS Nano, Journal Year: 2024, Volume and Issue: 18(20), P. 12981 - 12993

Published: May 8, 2024

Aqueous aluminum-ion batteries (AAIBs) are considered as a promising alternative to lithium-ion due their large theoretical capacity, high safety, and low cost. However, the uneven deposition, hydrogen evolution reaction (HER), corrosion during cycling impede development of AAIBs, especially under harsh environment. Here, hydrated eutectic electrolyte (AATH40) composed Al(OTf)3, acetonitrile (AN), triethyl phosphate (TEP), H2O was designed improve electrochemical performance AAIBs in wide temperature range. The combination molecular dynamics simulations spectroscopy analysis reveals that AATH40 has less-water-solvated structure [Al(AN)2(TEP)(OTf)2(H2O)]3+, which effectively inhibits side reactions, decreases freezing point, extends window electrolyte. Furthermore, formation solid interface, HER corrosion, been demonstrated by X-ray photoelectron spectroscopy, diffraction tests, situ differential mass spectrometry. Additionally, operando synchrotron Fourier transform infrared quartz crystal microbalance with dissipation monitoring reveal three-electron storage mechanism for Al//polyaniline full cells. Consequently, this exhibit improved stability within range −10–50 °C. This present study introduces methodology designing electrolytes suitable low-cost, safe, stable over

Language: Английский

---

Self‐Adaptive Hierarchical Hosts with Switchable Repulsive Shielding for Dendrite‐Free Zinc‐Ion Batteries

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(14)

Published: Feb. 5, 2024

Abstract The engineering of anode‐electrolyte interphase for highly reversible and dendrite‐free Zn plating‐stripping continues to pose a significant challenge in the progression aqueous Zn‐ion batteries (AZIBs). In this study, novel approach is introduced that involves design hierarchical carbon nanotube (CNT)‐based host through functionalization with cetyltrimethylammonium cations (CTA + ). This enables dynamically switchable repulsive shielding regulate plating. CNT scaffold, featured high flexibility conductivity, facilitates expandable accommodation continuous Concurrently, entangled CTA cations, acting as manipulators form shields, suppress growth dendrites, result uniform plating within cationic (C‐CNT) hosts. effect further elucidated density functional theory calculations. By incorporating self‐adaptive C‐CNT host, symmetric cells exhibit an impressively stable cycling lifespan exceeding 6500 h at 1 mA·cm −2 achieve cumulative capacity 6000 mAh·cm 4 . Full batteries, by coupling C‐CNT@Zn anode MnO 2 cathode, demonstrate 88% retention after 2000 cycles A·g −1 offers promising electrode‐electrolyte toward practical applications Zn‐based energy storage systems.

Language: Английский

---

Dissolution Mechanism for Dendrite‐Free Aqueous Zinc‐Ions Batteries

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(22)

Published: April 9, 2024

Abstract The commercialization of aqueous Zn‐ion batteries (AZIBs) for power‐grid energy storage systems is hindered by the safety concerns arising from Zn dendrite growth. primary approach in addressing this issue to induce planar depositions. However, modulating dissolution process which directly reshapes surface morphology and reserves growth sites has long been overlooked. Herein, utilizing ester compounds as an illustration, it revealed that engineering barrier a pivotal factor promoting homogeneous dissolution. Ester adsorbents effectively redistribute charge densities at electrode–electrolyte interface due presence zincophilic functional group conductive π‐conjugation structure. This effect eventually facilitates across surface, transforming potholed defective into smooth consistent form. Thus, enhanced cycling stability can be achieved both half‐cells full‐cells, offering extensive lifespan thousands hours deposition cycles. work provides principle selection improvers suppress metal regulating behavior.

Language: Английский

---

Weakening the Space Charge Layer Effect Through Tethered Anion Electrolyte and Piezoelectric Effect Toward Ultra‐Stable Zinc Anode

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 12, 2024

The space charge layer (SCL) dilemma, caused by mobile anion concentration gradient and the rapid consumption of cations, is fundamental reason for generation zinc dendrites, especially under high-rate discharge conditions. To address issue, a physical (PbTiO

Language: Английский

---

Critical design strategy of electrolyte engineering toward aqueous zinc-ion battery

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 497, P. 154541 - 154541

Published: Aug. 3, 2024

Language: Английский

---

Water-Restrained Hydrogel Electrolytes with Repulsion-Driven Cationic Express Pathways for Durable Zinc-Ion Batteries

Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)

Published: March 19, 2025

Abstract The development of flexible zinc-ion batteries (ZIBs) faces a three-way trade-off among the ionic conductivity, Zn 2+ mobility, and electrochemical stability hydrogel electrolytes. To address this challenge, we designed cationic named PAPTMA to holistically improve reversibility ZIBs. long branch chains in polymeric matrix construct express pathways for rapid transport through an repulsion mechanism, achieving simultaneously high transference number (0.79) conductivity (28.7 mS cm −1 ). Additionally, reactivity water hydrogels is significantly inhibited, thus possessing strong resistance parasitic reactions. Mechanical characterization further reveals superior tensile adhesion strength PAPTMA. Leveraging these properties, symmetric employing deliver exceeding 6000 h reversible cycling at 1 mA −2 maintain stable operation 1000 with discharge depth 71%. When applied 4 × 2 pouch cells MnO as cathode material, device demonstrates remarkable operational mechanical robustness 150 cycles. This work presents eclectic strategy designing advanced that combine enhanced reactions, paving way long-lasting

Language: Английский

---

Quasi-Solid Gel Electrolytes for Alkali Metal Battery Applications

Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)

Published: March 19, 2025

Abstract Alkali metal batteries (AMBs) have undergone substantial development in portable devices due to their high energy density and durable cycle performance. However, with the rising demand for smart wearable electronic devices, a growing focus on safety durability becomes increasingly apparent. An effective strategy address these increased requirements involves employing quasi-solid gel electrolytes (QSGEs). This review focuses application of QSGEs AMBs, emphasizing four types influence battery performance stability. First, self-healing gels are discussed prolong life enhance through self-repair mechanisms. Then, flexible explored mechanical flexibility, making them suitable electronics. In addition, biomimetic inspired by natural designs introduced high-performance AMBs. Furthermore, biomass materials presented, derived from biomaterials, offering environmental friendliness biocompatibility. Finally, perspectives challenges future developments terms enhancing ionic conductivity, strength, stability novel materials. The underscores significant contributions AMBs performance, including lifespan, safety, adaptability, providing new insights directions research applications field.

Language: Английский

---

Zinc Micro-Energy Storage Devices Powering Microsystems

National Science Open, Journal Year: 2024, Volume and Issue: 3(5), P. 20230078 - 20230078

Published: Feb. 21, 2024

The increasing popularity of the Internet Things and growing microelectronics market have led to a heightened demand for microscale energy storage devices, such as microbatteries microsupercapacitors. Although lithium dominated market, safety concerns arising from incidents like self-ignition explosions prompted shift towards new devices prioritizing high safety. Zinc-based micro-energy (ZMSDs), known their safety, low cost, favorable electrochemical performance, are emerging promising alternatives microbatteries. However, challenges persist in fabrication microelectrodes, electrolyte infusion, device packaging, integration with microelectronics. Despite these challenges, significant progress has been made over last decade. This review focuses on recent advancements zinc-based storage, offering unique insights into applications paving way commercial deployment high-performance ZMSDs.

Language: Английский

---

Thermodynamic and kinetic insights for manipulating aqueous Zn battery chemistry: towards future grid-scale renewable energy storage systems

eScience, Journal Year: 2024, Volume and Issue: unknown, P. 100331 - 100331

Published: Nov. 1, 2024

Language: Английский

---