Boosting tough metal Zn anode by MOF layer for high-performance zinc-ion batteries

Energy storage materials, Год журнала: 2024, Номер 71, С. 103616 - 103616

Опубликована: Июль 1, 2024

Язык: Английский

---

Research on the Mechanism of Space Charge Layer in Gel Electrolyte: Synergistic Effects of PFPE Networks and Li₂O

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 7, 2025

Abstract The increasing demand for energy in portable electronics and electric vehicles has highlighted the necessity lithium‐ion batteries that offer high density, safety, long cycle life. To address this challenge, study introduces a novel gel polymer electrolyte (GPE) based on poly(vinylidene fluoride‐co‐hexafluoropropylene)‐perfluoropolyether methacrylate (PH‐PFPE) 3D network structure, integrated with lithium oxide (Li₂O) fillers form space charge layer (SCL). Lithium metal (LMBs) utilizing new demonstrate exceptional rate performance across broad current density range (0.2 to 4 C) retain 95.64% of their capacity after 1500 cycles at 3 C. This paper provides comprehensive analysis microstructure interfacial properties both electrode materials electrolytes. Furthermore, molecular dynamics simulations reveal molecular‐level synergistic effect between fillers, which significantly enhances transport.

Язык: Английский

---

Silk Fibroin-Induced Conformational Change for Robust Silicon Anodes

Nano Energy, Год журнала: 2025, Номер unknown, С. 110957 - 110957

Опубликована: Апрель 1, 2025

Язык: Английский

---

Non-flammable phosphate-ester-based electrolyte with high concentration for high safety potassium-based anode-free dual ion battery

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 162629 - 162629

Опубликована: Апрель 1, 2025

Язык: Английский

---

Edge-Surface-Inter Carbon Nanoarchitecture on Silicon

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Апрель 21, 2025

The huge volume changes of silicon (Si) anodes during cycling lead to continuous solid electrolyte interphase thickening, mechanical failure, and loss electrical contact, which have become key bottlenecks limiting their practical applications. This work presents a trimodal in situ growth strategy for constructing hierarchical carbon nanoarchitecture networks on Si substrates (Si@Gr@CNT). designed "Edge-Surface-Inter" (E-S-I) architecture exhibits three synergistic features: an edge-protruding structure forming vertical conductive channels rapid Li+ transport, surface-entangled providing enhancement, interbridging three-dimensional electron transport networks. Si@Gr@CNT electrode demonstrates 63.2% improvement half-cell rate performance compared with traditional Si@Gr. E-S-I contributes suppressing excessive LiF formation through improved local current distribution, devoted the stable thinner layer. network possesses significant stress regulation effect, provides release space direction lateral buffering surface flexible entanglement. For applications, full cell assembled LiFePO4 cathode Si@Gr@CNT/graphite composite anode delivers high energy density enhanced durability. study establishes nanoarchitectures design insights into high-performance Si-based electrodes.

Язык: Английский

---

Humidity-controlled in situ rapid formation of multi-gradient inorganic nanoparticle layer in ambient air stabilizes lithium metal anodes

Nano Energy, Год журнала: 2025, Номер 140, С. 111048 - 111048

Опубликована: Апрель 23, 2025

Язык: Английский

---

Suppression Strategies for Si Anode Volume Expansion in Li-Ion Batteries Based on Structure Design and Modification: A Review

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Май 19, 2025

Silicon anodes have received increasing attention due to their exceptionally high theoretical capacity in lithium-ion batteries (LIBs). However, the defect of anode volume expansion caused by solid-electrolyte interphase (SEI) crushing limits cycle life seriously. To overcome obstacle, one must understand mechanism behind prior exploring suppression strategies. In this review, recent advances Si-based modification and structural design are categorized comprehensively, scaled-up framework structures deeply discussed, impacts various composite on cycling performance Coulombic efficiency emphasized, particularly synergistic effects carbon/MXene assembled with silicon. Some reliable strategies for restriction been proposed. The porous structure monocrystalline silicon spheres reconstructed alloy sintering can restrain effectively reshaped uniform internal stress field. inner-stress offset induced Si two-dimensional material layer collapse provide a perfect inhibition effect SEI fragmentation when graphene or MXene. Moreover, how special nanoshape stability after long cycles summarized. This current review will be beneficial facilitate exploration pave an avenue extensive application LIBs future.

Язык: Английский

---

Dual Protection of Li‐Metal Anode by Black Phosphorus‐Modified Separator via Modulating Solid Electrolyte Interphase and Eliminating Li Dendrites

Small Methods, Год журнала: 2025, Номер unknown

Опубликована: Май 22, 2025

Abstract Lithium metal batteries (LMBs) are highly valued due to their high energy density. However, LMBs severely hindered by the unstable solid electrolyte interphase (SEI), which requires a rational design of interface engineering. Herein, dual protection strategy Li‐metal anode is proposed via coating black phosphorus (BP) layer on separator. During battery assembly process, few‐layer BP nanosheets can be peeled off and uniformly modified lithium surface, soft metallic properties lithium, meanwhile, remaining remains separator, so that they provide two types during initial formation cycling processes, respectively. lithiation, stripped converted Li 3 P, beneficial component for stable fast‐dynamic SEI. In addition, when dendrites dramatically generated under extreme conditions, separator melt owing activity alloying reaction. Therefore, BP‐modified facilitates large‐scale application metal, with generalisability in both ester ether electrolytes. electrolyte, lifetimes Li||Li cells prolonged over 2200 h, Li||LiFePO 4 exhibit superior capacity retention 78% after 500 cycles at 1 C.

Язык: Английский

---

A Solid-State Electrolyte Based on Electrochemical Active LiMn₂O₄ for Lithium Metal Batteries

Journal of Materials Chemistry A, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

Developed through a simple preparation method, low-cost, flexible solid-state electrolyte based on electrochemically active LiMn 2 O 4 exhibits excellent interfacial stability with both lithium metal anodes and LiFePO cathodes.

Язык: Английский

---

A hard-soft synergy strategy enables drastic temperature performance of pouch sodium-ion batteries over wide-temperature range of -30 ºC to 60 ºC

Energy storage materials, Год журнала: 2024, Номер unknown, С. 103997 - 103997

Опубликована: Дек. 1, 2024

Язык: Английский

---