Thieno[3,2-b]thiophene-containing conjugated microporous polymer–derived sulfur-doped hard carbon for enhanced lithium storage

Ionics, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 26, 2025

Language: Английский

---

In Situ Engineering of a 3D Branched Polyimide/Silver Interface Layer with Dual Ion‐Electron Conductivity for Superior Structural Integrity and Long‐Cycle Stability of Silicon Anodes

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

Published: May 15, 2025

Abstract Silicon (Si) has been regarded as a remarkable potential anode material for next‐generation lithium‐ion batteries (LIBs) owing to its exceptional capacity. However, overcoming excessive volume expansion and continuous interfacial side reactions is prerequisite achieving practical applicability. Herein, an ion‐electron dual conductive 3D crosslinked interface layer (PMTI‐Ag), derived from branched polyimide (abbreviated PMTI) silver (Ag), synthesized by copolymerizing pyromellitic dianhydride (PMDA), 4,4′‐oxydianiline (ODA), poly(dimethylsiloxane)etherimide (DMS), 1,3,5‐tris(4‐aminophenoxy) benzene (TAPOB). Trifluoroacetylacetonate (AgTFA) incorporated in situ reduced form ultra‐small nanoclusters within the PMTI. The network of PMTI‐Ag contains abundant aromatic rings, which provide excellent modulus toughness. flexible Si‐O‐Si segments DMS elasticity accommodate Si. uniform distribution nanosilver enhances charge‐carrier mobility promotes formation robust solid electrolyte (SEI). Si@PMTI‐Ag exhibits long‐term cycling stability with specific capacity 1103.9 mAh g⁻¹ after 350 cycles at 1 A g⁻¹, this strategy also suitable enhancing SiO x anodes retention 89.3% 400 C. Moreover, Si@PMTI‐Ag//LiNi 0.8 Mn 0.1 Co O 2 pouch cell delivers impressive 82.6% 100 cycles.

Language: Английский

---

Improving lithium-ion battery efficiency using Si-lithium titanium oxide and graphene coating

Journal of the Korean Ceramic Society, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 10, 2024

Language: Английский

---