Cyclable Micron‐Sized Silicon‐Based Lithium‐Ion Batteries at −40 °C Enabled by Temperature‐Dependent Solvation Regulation DOI
Jiacheng Yang, Sicong Wang,

Shuangyu Song

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 15, 2025

Abstract Micron‐sized silicon (µSi) anodes hold great promise for high‐energy lithium‐ion batteries (LIBs). However, the rechargeable cyclability of µSi at sub‐zero Celsius, especially below −20 °C remains challenging, caused by severe volume change and cracking solid electrolyte interphase (SEI) during cycling. Here, low‐temperature µSi‐based LIBs is realized using an featured with temperature‐adaptive ion‐dipole interactions. The synergistic effect methyl group as a weak electron donor electronegative fluorine atoms endows difluoroacetate (MDFA) binding affinity Li + . Moreover, between oxygen in both MDFA fluoroethylene carbonate (FEC) decreases lower temperatures, accompanied temperature‐responsive enhancement ‐anion coordination. Thus, MDFA/FEC exhibits extraordinary contact ion pairs‐dominated solvation structure subzero which facilitates desolvation formation thin, robust inorganic‐rich SEI. As expected, show record‐breaking capacity 786 mAh g −1 after 100 cycles −40 under 0.1 A , full cells display impressive rechargeability °C. This work paves way extending applications to extreme cold conditions.

Language: Английский

Recent advances in potassium metal batteries: electrodes, interfaces and electrolytes DOI Creative Commons
Jianlu Sun, Yichen Du, Yijiang Liu

et al.

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

Published: Jan. 1, 2025

This review explores the latest advancements in potassium metal batteries, including electrode design, interface engineering, and electrolyte optimization to suppress dendrite formation enhance cycling stability.

Language: Английский

Citations

16
Unraveling the Diversity of the Storage Mechanism in Carbonyl Materials toward Different Metal Ions DOI
Lei Zhu, Changyou Zhang,

Qiwang Shao

et al.

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

Published: April 15, 2025

Due to their structural diversity, environmental friendliness, and resource renewability, organic electroactive compounds are versatile hosts for the energy storage of different metal ions. However, consistency variety performance mechanism designed electrode materials in aqueous electrolytes toward ions have rarely been researched. Here, one type material integrated with anhydride imide groups was studied detail. Among two functional groups, carbonyl were found be dominant contributors during initial discharge step due higher binding ions, while imides responsible second-step coordination monovalent With increment valence guest activity decreased became nearly inactive aluminum On contrary, always active various capacity when increased. Moreover, similar behaviors close potentials detected first these

Language: Английский

Citations

0
Cyclable Micron‐Sized Silicon‐Based Lithium‐Ion Batteries at −40 °C Enabled by Temperature‐Dependent Solvation Regulation DOI
Jiacheng Yang, Sicong Wang,

Shuangyu Song

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 15, 2025

Abstract Micron‐sized silicon (µSi) anodes hold great promise for high‐energy lithium‐ion batteries (LIBs). However, the rechargeable cyclability of µSi at sub‐zero Celsius, especially below −20 °C remains challenging, caused by severe volume change and cracking solid electrolyte interphase (SEI) during cycling. Here, low‐temperature µSi‐based LIBs is realized using an featured with temperature‐adaptive ion‐dipole interactions. The synergistic effect methyl group as a weak electron donor electronegative fluorine atoms endows difluoroacetate (MDFA) binding affinity Li + . Moreover, between oxygen in both MDFA fluoroethylene carbonate (FEC) decreases lower temperatures, accompanied temperature‐responsive enhancement ‐anion coordination. Thus, MDFA/FEC exhibits extraordinary contact ion pairs‐dominated solvation structure subzero which facilitates desolvation formation thin, robust inorganic‐rich SEI. As expected, show record‐breaking capacity 786 mAh g −1 after 100 cycles −40 under 0.1 A , full cells display impressive rechargeability °C. This work paves way extending applications to extreme cold conditions.

Language: Английский

Citations

0