Sieving pore design enables stable and fast alloying chemistry of silicon negative electrodes in Li-ion batteries DOI Creative Commons
Jiaxing He, Yuanxin Deng,

Junwei Han

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: May 25, 2025

Ideal silicon negative electrodes for high-energy lithium-ion batteries are expected to feature high capacity, minimal expansion, long lifespan, and fast charging. Yet, engineered materials face a fundamental paradox associated with particle deformation charge transfer, which hinders the industrial use of advanced electrode materials. Here we show sieving-pore design carbon supports that overcomes these mechano-kinetic limitations enable stable, (de)alloying chemistries electrodes. Such structure features an inner nanopore body reserved voids accommodate high-mass-content outer sub-nanopore entrance induce both pre-desolvation intrapore transport ions during cycling. Importantly, sieving effect yields inorganic-rich solid electrolyte interphases mechanically confine in-pore silicon, producing stress-voltage coupling mitigates formation detrimental crystalline Li15Si4. As result, this enables low expansion (58% at specific capacity 1773 mAh g-1 areal 4 cm-2), initial/cyclic Coulombic efficiency (93.6%/99.9%), decay (0.015% per cycle). A practical pouch cell such delivers 80% retention over 1700 cycles 2 as well 10-min charging capability.

Language: Английский

High‐Performance Silicon Anodes Enabled by Multifunctional Ultrafine Silica Nanoparticle‐Embedded Carbon Coatings for Lithium‐Ion Batteries DOI Open Access
Zhefei Sun,

Quanzhi Yin,

Shenghui Zhou

et al.

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

Published: Feb. 17, 2025

Abstract Silicon (Si) holds immense promise as viable anode for next‐generation high‐energy‐density Li‐ion batteries (LIBs). However, its poor ionic/electronic conductivity and significant volumetric changes during cycling lead to rapidly deteriorated LIB performance. Here, a novel multifunctional coating featuring ultrafine SiO 2 nanoparticles (<7 nm) embedded carbon on Si (termed Si@uSiO ‐C) resolve these challenges is proposed. This unique uSiO ‐C provides high‐efficient electron ion transport pathways, while also improves interfacial stability mitigates volume cycling, thereby enhancing the structural integrity of ‐C, corroborated by extensive experimental computational studies. In addition, abundant interfaces in facilitate Li + evenly distributed impart high electrochemical reactivity mechanical robustness. Consequently, achieves reversible capacity 2093 mAh g −1 at 0.2 A , with initial Coulombic efficiency 88.3%, superior rate capability durability (1000 cycles, 928 1.0 75% retention). Full cells paired commercial LiFePO 4 cathodes demonstrate cyclability, maintaining 80% retention over 500 cycles C. work highlights vital role promoting performance Si‐based anodes high‐performance LIBs.

Language: Английский

Citations

4
Co‐Assembly of Polyoxometalates and Porphyrins as Anode for High‐Performance Lithium‐Ion Batteries DOI
Yanchun Liu, Xianggang Zhou, Tianyu Qiu

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(35)

Published: June 25, 2024

Polyoxometalates (POMs) have been considered one of the most promising anode candidates for lithium-ion batteries (LIBs) in virtue their high theoretical capacity and reversible multielectron redox properties. However, poor intrinsic electronic conductivity, low specific surface area, solubility organic electrolytes hinder widespread applications LIBs. Herein, a novel hybrid nanomaterial is synthesized by co-assembling POMs porphyrins (PMo

Language: Английский

Citations

13
The future of carbon anodes for lithium-ion batteries: The rational regulation of graphite interphase DOI Creative Commons

Bin Cao,

Mengjiao Du,

Zirong Guo

et al.

Carbon Future, Journal Year: 2024, Volume and Issue: unknown, P. 9200017 - 9200017

Published: Aug. 1, 2024

Language: Английский

Citations

10
Integrating robust SEI on recycled micro-sized silicon scrap for stable lithium ion battery DOI
Haoyu Ma,

Baogang Zhao,

Zhuobin Han

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160149 - 160149

Published: Feb. 1, 2025

Language: Английский

Citations

2
Designing Copolymeric SEI Layer Based on Click Reaction toward Ultralow N/P Ratio and Long Cycle Life Zinc Ion Batteries DOI Open Access
Baohua Liu, Xue Ma, Qinghong Wang

et al.

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

Published: Dec. 20, 2024

Abstract Balancing interfacial interactions is critical to the reversibility and cycle stability of Zn ion batteries, as severe chemical corrosion undesirable hydrogen evolution reaction (HER) are inevitable for anode in aqueous electrolytes during charge/discharge process. Herein, a multi‐functional copolymeric solid/electrolyte interface (SEI) layer, self‐assembling on based click between epoxy silane thioalcohol, employed eliminate these side reactions. The dense robust SEI layer can not only physically repel water from surface effectively inhibit HER but also facilitate desolvation 2+ accelerate kinetic Additionally, it regulate flux induce preferred plating with (002) crystallographic orientation, enabling dendrite‐free deposition. As result, stable long life ≈200 h at depth discharge (DoD) 60% achieved. Zn||V 2 O 5 full cell delivers high specific capacity 165.2 mAh g −1 after 600 cycles an ultralow N/P ratio (the negative electrode positive electrode) 2.5. construction this provides new pathway development practical batteries.

Language: Английский

Citations

8
Electrolyte design weakens lithium-ion solvation energy for a fast-charging and long-cycling Si anode DOI Creative Commons
Min Li, Shuai Li, Yan Dong

et al.

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

Published: Jan. 1, 2025

Silicon (Si) is considered a promising anode material for next-generation lithium-ion batteries due to its high theoretical specific capacity and earth-abundancy. However, challenges such as significant volume expansion, unstable solid electrolyte interphase (SEI) formation in incompatible electrolytes, slow transport lead poor cycling rate performance. In this work, it demonstrated that superior cyclability capability of Si anodes can be achieved using ethyl fluoroacetate (EFA) fluoroethylene carbonate (FEC) solvents with low binding energy Li+ but sufficiently relative dielectric constants. By weakening the interaction between solvent, barrier desolvation process lowered, while ensuring conductivity diffusion Li+. As result, silicon-carbon optimized exhibits excellent performance, work reversibly 1709.1 mAh g-1 proceeds over 250 cycles retains 85.2% at 0.2C. Furthermore, Si/C‖LiFePO4 (LFP) full cell shows an extended service life more than 500 cycles. This offers valuable insights into design weakly solvating electrolytes high-performance Si-based batteries.

Language: Английский

Citations

1
Binder-enabled cross-scale stabilization of high-areal-capacity micro-sized silicon anodes for high-voltage lithium-ion batteries DOI

Kangjia Hu,

Jiaxin Chen, Jiahui Zhang

et al.

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104029 - 104029

Published: Jan. 1, 2025

Language: Английский

Citations

1
Enhancement Mechanism of Photo‐Induced Artificial Boundary on Ultrastable Hybrid Solid‐electrolyte Interphase of Si Anodes DOI Open Access
Zeyu Xu,

Z.‐D. LIU,

Haibo Shao

et al.

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

Published: Jan. 26, 2025

Abstract Unstable solid‐electrolyte interphase (SEI) film resulting from chemically active surface state and huge volume fluctuation limits the development of Si‐based anode materials in lithium‐ion batteries. Herein, a photo‐initiated polypyrrole (PPy) coating is manufactured on Si nanoparticles to guide situ generation PPy‐integrated hybrid SEI (hSEI). The hSEI shows excellent structure stability optimized component composition for lithium storage. More promisingly, precursor with more uniform thickness, stronger interaction inner particles, higher mechanical strength further enables structural integrity film. highly ordered interchain can maintain effective Li + transport during electrochemical cycling. Consequently, SiNPs@hSEI‐L maintains reversible capacity 1044.7 mAh g −1 after 500 cycles at 2 A , manifesting superior This work proposes novel polymer‐integrated formation provides an reference optimization semiconductor materials.

Language: Английский

Citations

1
In Situ Cross‐Linking and Interfacial Engineering via Multifunctional Diamine Additive for High‐Temperature Magnesium Metal Batteries DOI Open Access

Chen Meng,

Shu Zhang,

Xuesong Ge

et al.

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

Published: March 16, 2025

Abstract The electrolyte and its interfacial chemistry are crucial for the development of high‐temperature magnesium metal batteries. Here, a robust in situ cross‐linked gel polymer (MgB@CGPE) derived Mg 3 N 2 ‐rich (Mg related Mg─N─H complexes) interphase obtained by multifunctional diamine additive. exhibits low ion migration activation energy can effectively inhibit continuous decomposition at interface under elevated temperatures. Moreover, MgB@CGPE enable reversible deposition dissolution over wide temperature range 30–180 °C. assembled Mo 6 S 8 //MgB@CGPE//Mg cells demonstrate stable cycling 200 cycles 150 °C with 80% capacity retention. Additionally, these also address mechanical thermal safety concerns, indicating their potential use extreme conditions. This work presents universal practical strategy designing electrolytes that operate

Language: Английский

Citations

1
A Stress‐Buffering Hierarchically Porous Silicon/Carbon Composite for High‐Energy Lithium‐Ion Batteries DOI Open Access

Zhongling Cheng,

Huanhao Lin,

Yueming Liu

et al.

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

Published: March 21, 2025

Abstract The electrochemical performance of Si anodes for lithium‐ion batteries (LIBs) is primarily influenced by the stress–strain and transport dynamics. However, traditional Si/carbon composites often fail to well balance these two factors. Herein, a hierarchically porous silicon/carbon composite (denoted as pSi@void@NMC) with high lithium storage capacity developed under guidance finite element analysis, where (pSi) nitrogen‐doped mesoporous carbon (NMC) used yolk shell, respectively. internal external cultivation design endows pSi@void@NMC fast transfer kinetics, effective stress‐buffering, low volume expansion, superior mechanical stability. Compared core–shell pSi@NMC bare pSi electrodes, resulting anode demonstrates reversible 1769.8 mAh g −1 after 300 cycles at 0.2 A exceptional cycling stability only 0.016% decay rate per cycle. In situ ex characterization results further confirm its reversibility Li + insertion/extraction during reactions benefiting from formation inorganic LiF‐rich SEI film. Moreover, also shows good potential full‐cell applications. These findings provide facile concept research strategy addressing stress fractures inadequate kinetics Si‐based materials high‐performance LIBs.

Language: Английский

Citations

1