Strong coordination interaction in amorphous Sn-Ti-ethylene glycol compound for stable Li-ion storage

Cai, Yuqing; Liu, Haigang; Li, Haoran; Sun, Qianzi; Wang, Xiang; Zhu, Fangyuan; Li, Ziquan; Kim, Jang-Kyo; Huang, Zhen-Dong

doi:10.26599/emd.2023.9370013

Cited by 9 publications

(5 citation statements)

References 53 publications

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“…Notably, W can be estimated from the linear fitting in the low-frequency region as indicated. 24,25 As expected, linear fitting of FTCE is highly steep, implying the fast diffusion kinetics of FTCE. Furthermore, to probe this, W and the Li + diffusion coefficient (D Li + ) of each electrode were calculated via the following equations, respectively, 26…”

supporting

confidence: 71%

“…This is mainly due to the top FTC layer with a porous feature that the enables a large contact area between the NMC active material and electrolyte together with the thin CEI. Notably, W can be estimated from the linear fitting in the low-frequency region as indicated. , As expected, linear fitting of FTCE is highly steep, implying the fast diffusion kinetics of FTCE. Furthermore, to probe this, W and the Li + diffusion coefficient ( D Li + ) of each electrode were calculated via the following equations, respectively, Z ′ = R normalo + R CEI + R ct + σ normalw ω − 1 / 2 D normalL normali + = 0.5 false( R T / A n 2 F 2 σ normalw C false) 2 where σ w , ω, R , T , A , n , F , and C are the Warburg coefficient, the angular frequency, the gas constant, the absolute temperature, the area of the electrode, the number of electrons per molecule involved in the redox reaction, the Faraday constant, and the Li + concentration, respectively.…”

mentioning

confidence: 62%

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Freeze Tape Casting Electrode with Bilayered Architecture for High-Performance Lithium-Ion Batteries

Tao,

Polizos,

et al. 2024

ACS Appl. Energy Mater.

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A facile freeze tape casting (FTC) strategy is utilized to prepare bilayered 4 mAh cm −2 high-loading LiNi 0.6 Co 0.2 Mn 0.2 O 2 cathodes. The bottom layer is a conventional nonaqueous electrode, which has a dense structure for highenergy purposes. The top layer is prepared by the proposed FTC, exhibiting a porous feature for high-power requirement. With the assistance of FTC, the bilayered electrodes successfully deliver enhanced rate and cyclic performance due to the improved lithiumion diffusion kinetics and pathways. Therefore, the proposed FTC strategy and its delivered electrodes are promising for energy-and power-density lithium-ion batteries, potentially enlightening the research and development of lithium-ion battery manufacturing.

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supporting

confidence: 71%

mentioning

confidence: 62%

Freeze Tape Casting Electrode with Bilayered Architecture for High-Performance Lithium-Ion Batteries

Tao,

Polizos,

et al. 2024

ACS Appl. Energy Mater.

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“…Therefore, in recent years, there has been great research interest in developing new anode materials: the conversion type (Fe 2 O 3 , , Co 3 O 4 , MnO 2 , etc. ), the alloy type (Si, Sn, Al, Zn, etc. ), and the insertion type (Li 4 Ti 5 O 12 , , Li 3 VO 4 , , TiO 2 , , etc.).…”

Section: Introductionmentioning

confidence: 99%

The Lithium Storage Mechanism of Zero-Strain Anode Materials with Ultralong Cycle Lives

Li,

Yu,

Xie

et al. 2024

ACS Appl. Mater. Interfaces

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At present, graphite is a widely used anode material in commercial lithium-ion batteries for its low cost, but the large volume expansion (about 10%) after fully lithiated makes the material prone to cracking and even surface stripping in the cycle. Therefore, the development of zero-strain anode materials (volume change <1%) is of great significance. LiAl 5 O 8 is a zero-strain insertion anode material with a high theoretical specific capacity. However, the Li + storage mechanism remains unclear, and the cycle life as well as fast-charging capability need to be greatly improved to meet the practical requirements. In this study, LiAl 5 O 8 nanorods are prepared by utilizing aluminum ethoxide nanowires as a soft template and doped with the Zr element to further improve the Li + diffusion coefficient and electronic conductivity, which in turn improves cycle and rate performances. The Zr-doped LiAl 5 O 8 presents a high reversible capacity of 227.2 mAh g −1 after 20,000 cycles under 5 A g −1 , which significantly outperforms the state-of-the-art anode materials. In addition, the Li + storage mechanisms of LiAl 5 O 8 and Zr-doped LiAl 5 O 8 are clearly clarified with a variety of characterization techniques including nuclear magnetic resonance. This work greatly promotes the practical process of zero-strain insertion anode materials.

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“…Nanostructured transition metal sulfides (TMSs) can exhibit a theoretical capacity at least twice as high as traditional graphite and other insertion-type anode materials [11] . In recent years, various metal sulfides have been compounded with carbon fibers to create high-capacity anode materials [12][13][14][15][16][17] . For example, Wang et al encapsulated ultrafine CoS x nanoparticles in multichannel carbon fibers, resulting in an anode material that delivered a high capacity of 737 mAh g −1 after 100 cycles [14] .…”

Section: Introductionmentioning

confidence: 99%

ZnS/CuS nanoparticles encapsulated in multichannel carbon fibers as high-performance anode materials for flexible Li-ion capacitors

Li,

Wang,

Qin

et al. 2023

Energy Materials and Devices

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Transition metal sulfides (TMSs) are widely recognized for their potential as anode materials in the development of flexible lithium-ion capacitors (FLICs) owing to their high theoretical capacity. However, their practical application has been significantly limited by rapid capacity decay and sluggish kinetics associated with TMS volume variation. In response to these challenges, we have prepared ZnS/CuS nanoparticles embedded in continuous and multichannel carbon fibers (CFs). This was achieved through a process involving blow-spinning and subsequent sulfidation. Notably, the electrochemical performance of these materials was largely improved, owing to the synergistic effect of bimetallic sulfides. The ZnS/CuS-CF anode material demonstrated a high specific capacity of over 900 mAh g −1 at a current density of 0.2 A g −1 . Furthermore, it exhibited superior rate capacity (300 mAh g −1 at 20 A g −1 ) and excellent cyclic stability, maintaining its performance over 1000 cycles at 10 A g −1 . We also prepared lithium-ion capacitors (LICs) using the same method. These LICs exhibited a maximum energy density of 136 Wh kg −1 , a high power density of 43.5 kW kg −1 , and an impressive cyclic stability over 4000 cycles. In addition, the FLICs, when configured in the form of a pouch cell, demonstrated significant potential for the development of smart, flexible electronic devices.

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Strong coordination interaction in amorphous Sn-Ti-ethylene glycol compound for stable Li-ion storage

Cited by 9 publications

References 53 publications

Freeze Tape Casting Electrode with Bilayered Architecture for High-Performance Lithium-Ion Batteries

Freeze Tape Casting Electrode with Bilayered Architecture for High-Performance Lithium-Ion Batteries

The Lithium Storage Mechanism of Zero-Strain Anode Materials with Ultralong Cycle Lives

ZnS/CuS nanoparticles encapsulated in multichannel carbon fibers as high-performance anode materials for flexible Li-ion capacitors

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