Weakly solvating electrolytes for next-generation lithium batteries: design principles and recent advances

Energy Materials and Devices, Journal Year: 2023, Volume and Issue: 1(1), P. 9370003 - 9370003

Published: Sept. 1, 2023

Lithium batteries play a dominant role in the power source market of electric vehicles and portable electronic devices. The electrolyte is critical to determining performance lithium batteries. Conventional electrolytes cannot meet ever-growing demands fast-charging, wide-temperature operation, safety properties Despite great success (localized) high-concentration electrolytes, they still suffer from disadvantages like low ionic conductivity high cost. emerging weakly solvating also known as low-solvating offer another solution these challenges have attracted intensive research interests recent years. This contribution reviews working mechanisms, design principles, advances developing electrolytes. A summary perspective about future directions this field provided. insights will benefit both academic industrial communities designing safe high-performance next-generation Li

Language: Английский

---

Gel polymer electrolytes for rechargeable batteries toward wide-temperature applications

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(10), P. 5291 - 5337

Published: Jan. 1, 2024

Design principles, engineering strategies, challenges, and opportunities of gel polymer electrolytes for rechargeable batteries toward wide-temperature applications are thoroughly reviewed.

Language: Английский

---

Emerging Chemistry for Wide-Temperature Sodium-Ion Batteries

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(8), P. 4778 - 4821

Published: April 2, 2024

The shortage of resources such as lithium and cobalt has promoted the development novel battery systems with low cost, abundance, high performance, efficient environmental adaptability. Due to abundance cost sodium, sodium-ion chemistry drawn worldwide attention in energy storage systems. It is widely considered that wide-temperature tolerance batteries (WT-SIBs) can be rapidly developed due their unique electrochemical chemical properties. However, WT-SIBs, especially for electrode materials electrolyte systems, still face various challenges harsh-temperature conditions. In this review, we focus on achievements, failure mechanisms, fundamental chemistry, scientific WT-SIBs. insights design principles, current research, safety issues are presented. Moreover, possible future research directions WT-SIBs deeply discussed. Progress toward a comprehensive understanding emerging comprehensively discussed review will accelerate practical applications rechargeable batteries.

Language: Английский

---

An Ultrastable Low-Temperature Na Metal Battery Enabled by Synergy between Weakly Solvating Solvents

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(6), P. 3854 - 3860

Published: Feb. 2, 2024

The low ionic conductivity and high desolvation barrier are the main challenges for organic electrolytes in rechargeable metal batteries, especially at temperatures. general strategy is to couple strong-solvation weak-solvation solvents give balanced physicochemical properties. However, two described above cannot be overcome same time. Herein, we combine different kinds of weakly solvating with a very energy. Interestingly, synergy between can break locally ordered structure temperature enable higher compared those individual solvents. Thus, facile achieved simultaneously, significantly improving reversibility electrode reactions Na anode stably cycled 2 mA cm–2 −40 °C 1000 h. Na||Na3V2(PO4)3 cell shows reversible capacity 64 mAh g–1 0.3 C after 300 cycles °C, retention 86%. This applicable other sets solvents, providing guidance development low-temperature batteries.

Language: Английский

---

Low-Temperature and Fast-Charging Lithium Metal Batteries Enabled by Solvent–Solvent Interaction Mediated Electrolyte

Nano Letters, Journal Year: 2024, Volume and Issue: 24(24), P. 7499 - 7507

Published: June 10, 2024

Lithium metal batteries utilizing lithium as the anode can achieve a greater energy density. However, it remains challenging to improve low-temperature performance and fast-charging features. Herein, we introduce an electrolyte solvation chemistry strategy regulate properties of ethylene carbonate (EC)-based electrolytes through intermolecular interactions, weakly solvated fluoroethylene (FEC) replace EC, incorporating low-melting-point solvent 1,2-difluorobenzene (2FB) diluent. We identified that interaction between 2FB facilitate Li

Language: Английский

---

Delocalized electronic engineering of TiNb2O7 enables low temperature capability for high-areal-capacity lithium-ion batteries

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: July 26, 2024

Abstract High areal capacity and low-temperature ability are critical for lithium-ion batteries (LIBs). However, the practical operation is seriously impeded by sluggish rates of mass charge transfer. Herein, active electronic states TiNb 2 O 7 material modulated dopant O-vacancies enhanced dynamics. Femtosecond laser-based transient absorption spectroscopy employed to depict carrier dynamics , which verifies localized structure polarization accounting reduced transport overpotential, facilitated electron/ion transport, improved Li + adsorption. At high-mass loading 10 mg cm −2 −30 °C, TNO - x @N microflowers exhibit stable cycling performance with 92.9% retention over 250 cycles at 1 C (1.0-3.0 V, = mA g −1 ). Even −40 a competitive 1.32 mAh can be achieved. Such fundamental understanding intrinsic structure-function put forward rational viewpoint designing high-areal-capacity in cold regions.

Language: Английский

---

Solvating lithium and tethering aluminium using di-coordination-strength anions for low-temperature lithium metal batteries

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(12), P. 4036 - 4043

Published: Jan. 1, 2024

Di-coordination-strength anions can simultaneously solvate lithium and tether aluminium in low-temperature metal batteries: the weakly coordinated anion exerts high ionic transport kinetics while strongly stabilizes surface.

Language: Английский

---

Advanced Ether‐Based Electrolytes for Lithium‐ion Batteries

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

Published: July 14, 2024

Abstract Lithium‐ion batteries (LIBs) have emerged as vital elements of energy storage systems permeating every facet modern living, particularly in portable electronic devices and electric vehicles. However, with the sustained economic social development, new‐generation LIBs high density, wide operating temperature range, fast charge, safety are eagerly expected, while conventional ethylene carbonate (EC)‐based electrolytes fail to satisfy corresponding requirements. Comparatively, ether‐based electrolyte fascinating properties recently been revived fields, many advanced exciting performances under developed. This review provides an extensive overview latest breakthroughs concerning applied intercalation cathodes. To systematically outline progression electrolytes, this is categorized from perspective anodes follows: i) graphite anode‐based LIBs; ii) silicon iii) lithium metal LIBs.

Language: Английский

---

A High‐Power Rechargeable Sodium‐Ion Full Battery Operating at −40 °C

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(26)

Published: Feb. 25, 2024

Abstract High‐power‐density rechargeable batteries are highly indispensable for power‐intensive application scenarios, such as vehicle start‐stop system and grid‐level frequency regulation. However, realizing high‐power‐density alkali‐ion is challenging especially at low temperatures, undesirable alkali metal plating tends to occur more easily on the anode surface due increased electrochemical impedance polarization. Herein, a low‐temperature, Na 3 V 2 (PO 4 ) ||hard carbon (HC) sodium‐ion full battery without realized by electrolyte The designed high‐solvation‐entropy enables high ionic conductivity of 13.87 mS cm −1 −40 °C. More importantly, enhanced contact‐ion pairs solvation structure induces an anion‐derived, thin, NaF‐rich solid interface (SEI) HC anodes with interfacial resistance ensure facile + diffusion through SEI. Consequently, assembled demonstrates record‐high power density 1132.31 W kg (with energy 61.94 Wh °C 13372.56 (132.83 25 (based total mass active materials cathode). This work will expedite development applications in extreme environments.

Language: Английский

---

Eutectic Electrolytes Convoying Low-Temperature Metal-Ion Batteries

ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(3), P. 1192 - 1209

Published: Feb. 26, 2024

Eutectic electrolytes have been widely used in low-temperature metal-ion batteries (MIBs) due to their good performance regardless of seasonal and regional changes. Durable MIBs rely on the constitution, proportion, solvation-structure construction eutectic maintain high ionic conductivity electrochemical stability. Despite rapid advances electrolytes, some key issues, including fundamental mechanisms, theoretical models, aqueous/non-aqueous controversies, challenges at sub-zero temperatures, need be addressed. This Review first gives an overview chemistry by presenting analysis proposing new models demonstrate variety interactions anti-freezing mechanisms. Then, thermodynamics mass transfer, Helmholtz electric double-layer configuration, electrode–electrolyte interphase are discussed uncover influence structure electrochemistry MIBs. Finally, a summary perspectives provided guide design principles requirements systems for applications scenarios.

Language: Английский

---