Supramolecular interaction chemistry in polymer electrolytes towards stable lithium metal batteries

Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

---

In Situ-Polymerized High-Entropy-Driven Solid Polymer Electrolyte for Safer Solid-State Lithium Metal Batteries

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: May 7, 2025

The most promising way to achieve scaled-up solid-state battery production is use the in situ polymerization process, which inherits excellent interfacial contact and compatible with existing manufacturing processes. However, resulting solid polymer electrolytes suffer from poor oxidation stability and, thus, cannot match mainstream high-voltage cathodes. Herein, situ-polymerized high-entropy-driven based on five cyclic ether structured monomers are designed for safer lithium metal batteries. constructed disordered alkyl chain weakened solvation ability can effectively improve voltage tolerance 5.2 V accelerate segment motion of chains, induces formation an anion-derived LiBr-rich organic-inorganic hybrid passivation layer, achieving long-term cycling over 1000 h deep under 6.45 mA cm-2. cells paired polyanionic compounds or layered oxides demonstrate rate performance when charging 100% state charge 7.5 min more than 700 cycles. A 287.13 W kg-1 pouch cell was fabricated a capacity retention 98.67% 100 cycles, provides innovative strategy realize large-scale application

Language: Английский

---

Understanding the Electrochemical Window of Solid-State Electrolyte in Full Battery Application

Chemical Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: May 8, 2025

In recent years, solid-state Li batteries (SSLBs) have emerged as a promising solution to address the safety concerns associated. However, limited electrochemical window (ECW) of electrolytes (SEs) remains critical constraint full battery application. Understanding factors that influence ECW is an essential step toward designing more robust and high-performance systems. This review provides detailed classification various "windows" SEs comprehensive understanding associated interfacial stability in The paper begins with historical overview SE development, followed by discussion their structural characteristics. Next, examination methodologies used calculate measure presented, culminating proposal standardized testing procedures. Furthermore, analysis numerous parameters thermodynamic provided, along synthesis strategies these challenges. At last, this concludes in-depth exploration issues exhibiting narrow ECWs SSLBs.

Language: Английский

---

Flame Retardant Polyurethane‐Based Semi‐Interpenetrating Network Electrolyte with Continuous Ion Channel for High‐Voltage Lithium‐Metal Batteries

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

Published: Dec. 12, 2024

Abstract High‐nickel cathode materials is known to have high specific capacity but poor stability and safety due nickel diffusion. While Al‐doped high‐nickel (NCMA) particles exhibit enhanced stability, their durability under high‐charge cut‐off voltages remains uncertain. Herein, a polymer electrolyte with semi‐interpenetrating network (SIPN) structure designed for high‐voltage lithium‐metal battery application. The matrix of the composed CO 2 ‐derived thermoplastic polyurethane (TPU) an in situ polymerized polyacrylonitrile (PAN), where PAN provides strength TPU offers excellent resistance abundant ion‐complexing sites. With assistance additives, PAN‐TPU‐based performs flame retardancy, wide electrochemical window (>5.1 V) can lead stable organic–inorganic hybrid cathode‐electrolyte interface during cycling. Li‖PAN‐TPU/TEP‐E‖Li cell lasts over 3400 h at 0.2 mA cm −2 . construction well‐connected ion pathway by incorporating as binder forming electrolyte. NCMA@TPU‖PAN‐TPU/triethyl phosphate‐based (TEP‐E)‖Li shows outstanding performances, which maintains 186 mAh g −1 4.3 V charging voltage, retaining 82% after 300 cycles 0.5 C. Even 4.5 it retains 78% 200

Language: Английский

---

Advanced Polymer Electrolytes in Solid-State Batteries

Batteries, Journal Year: 2024, Volume and Issue: 10(12), P. 454 - 454

Published: Dec. 23, 2024

Solid-state batteries (SSBs) have been recognized as promising energy storage devices for the future due to their high densities and much-improved safety compared with conventional lithium-ion (LIBs), whose shortcomings are widely troubled by serious concerns such flammability, leakage, chemical instability originating from liquid electrolytes (LEs). These challenges further deteriorate lithium metal (LMBs) through dendrite growth undesirable parasitic reactions. Polymer (PEs) considered among few viable options that attracted great interest because of inherent non-flammability, excellent flexibility, wide electrochemical stability window. However, practical applications seriously limited relatively low ionic conductivity, mechanical instability, short operational life cycle. This review covers recent developments in field polymer SSBs, including solid (SPEs), gel (GPEs), composite (CPEs). The discussion comprises key synthesis methodologies, evaluation, fabrication PEs while examining lithium-ion’s solvation desolvation processes. Finally, this highlights innovations advanced technologies like beyond, covering emerging trends materials advancements PE performance enhance commercial applications.

Language: Английский

---

Highly Stabilized Ni‐Rich Cathodes Enabled by Artificially Reversing Naturally‐Formed Interface

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

Published: Nov. 26, 2024

Abstract A significant obstacle in the manufacturing and practical application of Ni‐rich cathode materials is decreasing cost without sacrificing cycling stability. Here a high‐energy, ultrahigh‐Ni, nearly Co‐free with outstanding performance proposed. This promising enabled by artificially constructing an “outside‐in” interface structure toward LiNi 0.94 Co 0.05 Mn 0.01 O 2 (NCM94) cathodes. Combining theoretical prediction experimental results, it revealed that high interfacial stability achieved specific surface chemistry outside‐in composed inner organic layer outer inorganic layer. Benefiting from protection effect robust outside strain relieve function inside layer, intrinsic challenges reactions, transition metal (TM) dissolution, micro‐crack propagation have been mitigated for cathode. As result, strategy enables superior 92.7% retention after 200 cycles excellent rate capability 149.1 mAh g −1 at 10 C, adding only 0.5% production cost. study unlocks possibilities achieving ultrahigh Ni spending minimum through facile method.

Language: Английский

---

Cyano and Fluorine-Enhanced Copolymer Electrolytes: Synergistically Boosting High-Voltage Lithium Metal Batteries

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 18, 2024

In high-voltage lithium metal batteries, designing electrolytes with low salt concentrations to achieve stable electrode interfaces presents a formidable challenge. High-concentration stabilize the interface through an anion-derived LiF-rich interphase; however, their anion-rich solvation structures compromise ionic conductivity. This study introduces polymer-derived interphase that maintains stability at (∼1 M). strategy enables copolymer sustain Li|Li cell for over 2500 h 0.1 mA/cm2, even water content of 1000 ppm. Moreover, this research addresses weak effects in fluorinated polymer by modulating strongly solvating cyano groups, resulting high conductivity 4 × 10–5 S/cm 30 °C. A 143.8 Wh/kg Li|LiNi0.8Co0.1Mn0.1O2 pouch cell, lean electrolyte ratio 5 g/Ah and negative/positive capacity 4, retention 90.5% after 29 cycles.

Language: Английский

---

Multi-anion electrolyte modulates the interactions in solvation structure to construct robust lithium metal batteries

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Language: Английский

---