Tailoring of a reinforcing and artificial self-assembled alkyl sulfonic acid layer electrolyte interphase on silicon as an anode for high-energy-density lithium-ion batteries

Hailu, Alem Gebrelibanos; Wang, Fuming; Ramar, Alagar; Tiong, Pei-Wan; Yeh, Nan‐Hung; Hsu, Chih‐Yi; Chang, Yung-Jen; Chen, Miao-Man; Chen, Ting-Wei; Huang, Chun-Hsi; Yu, Peng-Xuan; Chang, Ching-Kai; Hsing, Cheng-Da Rocan; Merinda, Laurien; Wang, Chun‐Chieh; Kahsay, Berhanemeskel Atsbeha

doi:10.1016/j.electacta.2022.140489

Cited by 8 publications

(6 citation statements)

References 49 publications

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“…As seen in Figure a, the peaks at 28, 47, 56, 69, 76, and 88° represent the (1 1 1), (2 2 0), (3 1 1), (4 0 0), (3 1 1), and (4 2 2) planes of silicon, which is consistent with the above HRTEM result. − A weak and broad peak can be observed at 23°, which indicates that the carbon layer is amorphous with a low graphitization degree . No existence of unknown peak demonstrates the high purity of the prepared material.…”

Section: Results and Discussionsupporting

confidence: 81%

Synthetic Strategy of Si@void@C Nanoparticles for High-Performance Lithium-Ion Battery Anodes

Zhang

Qin

Liu

et al. 2022

ACS Appl. Energy Mater.

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Silicon anode materials have the absolute predominance of high theoretical specific capacity, but its conductivity is low. What is more, the huge volume expansion (∼300%) of silicon during cycling causes rapid capacity fading. Herein, high-performance Si@void@C nanoparticles are synthesized by a unique ZnO template and mild strategy for the first time. Compared with the traditional synthesis method, a milder and environmentally friendly synthesis strategy provides a new feasible scheme for the large-scale commercialization of silicon anodes. The carbon layer blocks the silicon from the electrolyte and improves the conductivity of materials, and the yolk–void–shell structure accommodates the volume expansion of silicon during cycling. Si@void@C nanoparticles prepared with the ZnO template show excellent cycle and rate performances compared with the traditional synthetic strategy. After 500 cycles, the specific capacity of Si@void@C still maintains 934 mA h g–1 at 1 A g–1, and the average specific capacity is as high as 1125.4 mA h g–1 at a high current density of 4 A g–1. To sum up, the potential of Si@void@C anode for lithium-ion batteries cannot be underestimated.

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Section: Results and Discussionsupporting

confidence: 81%

Synthetic Strategy of Si@void@C Nanoparticles for High-Performance Lithium-Ion Battery Anodes

Zhang

Qin

Liu

et al. 2022

ACS Appl. Energy Mater.

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“…LiF is considered to be the important component in the SEI film, which can benefit the Li + diffusion and passivate the Si surface. As shown in Figure c,f, the high-resolution F 1s spectra can be deconvoluted into LiF peaks and fluorinated organic species peaks (Li x PO y F z and Li x PF y ), which comes from LiPF 6 decomposition. ,− Compared with the bare nano-Si anode, the content of Li x PO y F z /Li x PF y derived from directly decomposition of LiPF 6 for the nano-Si@GA electrode is significantly decreased. These results confirm the important role of GA on improving the interfacial stability between Si and electrolyte, which improved the long-cycle performance of the Si material.…”

Section: Results and Discussionmentioning

confidence: 99%

“…After 300 cycles, the retained charge capacities of the nano-Si@GA-1 and nano-Si@GA-2 electrodes are 1567 and 1478 mA h g –1 , respectively, whereas the bare one only has a capacity retention of 620 mA h g –1 . The performance of GA-coated Si is even better than those functional carbon-coated nano-silicon and organic polymer modified nano-silicon prepared via complicated techniques. Since the mass loading of Si is one of the most important parameters for practical application, we further tested the high Si-loading electrodes with an areal density of ∼1.5 mg cm –2 .…”

Section: Results and Discussionmentioning

confidence: 99%

“…Therefore, it is hard to fully cover the Si surface via carbon-coating layer, and the rapid capacity fading cannot be stopped. , Additionally, under effect of repeated volume expansion/contraction, the carbon-coating layer weakly interacted with the Si can be easily broken and detached from the Si surface, which allows the electrolyte to infiltrate and directly contact the silicon particle, resulting in low Coulombic efficiency and continuous consumption of lithium ions . It worth mentioning that the designed polymers as the coating materials have also been employed to enhance the performance of the silicon electrodes. , For instance, Jiang et al treated Si NPs with hydrogen peroxide, followed by the hydrolysis/condensation reaction using epoxy-containing oligo(ethylene oxide)s. The formed epoxy-containing oligo(ethylene oxide)s coating-layer can be attached to the surface of SiNPs via epoxy groups, and the resulted product exhibited a stable capacity of 1890 mA h g –1 at C/3 after 100 cycles . Zhou et al dispersed nano-silicon particles in ethanol assisted by sodium dodecyl sulfate as the surfactant.…”

Section: Introductionmentioning

confidence: 99%

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Nanometer-Thick Gallic Acid Coatings Enhance the Electrochemical Performance of Silicon Anodes

Xing

Xiong

et al. 2023

ACS Appl. Nano Mater.

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Due to the drawbacks of huge volume expansion upon lithiation/delithiation and surface corrosion by the electrolyte, silicon (Si) anodes for lithium ion batteries (LIBs) suffered from rapid capacity degradation. Herein, nano-Si was simply treated with a gallic acid (GA) solution to cover the Si surface with a nanometer-thick GA-layer. During surface treatment, GA formed an irreversible cross-linking structure, and it can be bonded to the surface of nano-Si via hydrogen bonds. The resulted

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“…In the S 2p spectrum (Figure S3a), the double peaks at 168.8 and 170.1 eV are attributed to the −SO 3 H group in the sulfonated PI. 44,45 Meanwhile, in the O 1s spectrum (Figure S3b), the intensity of the lattice Me-O peak at 529.8 eV at the NCM523-PSC electrode is diminished compared to the pristine electrode, which is owing to the existence of the surface PSC layer that weakens the signal of the lattice Me-O peak. 30,32 Further EDS mapping results of the NCM523-PSC electrode verify the distribution of the characteristic elements of S and N on the NCM523 electrode (Figure 2e−j), revealing that sulfonated PI is successfully introduced to the surface of the NCM523 electrode and homogeneously distributed on the NCM523 particle surface.…”

Section: Structures Of the Ncm523-psc Electrodesmentioning

confidence: 99%

Having Your Cake and Eating It Too: Electrode Processing Approach Improves Safety and Electrochemical Performance of Lithium-Ion Batteries

Chen

Zhang

et al. 2023

ACS Appl. Mater. Interfaces

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A layered Li[Ni x Co y Mn 1−x−y ]O 2 (NCM)-based cathode is preferred for its high theoretical specific capacity. However, the two main issues that limit its practical application are severe safety issues and excessive capacity decay. A new electrode processing approach is proposed to synergistically enhance the electrochemical and safety performance. The polyimide's (PI) precursor is spin-coated on the LiNi 0.5 Co 0.2 Mn 0.3 O 2 (NCM523) electrode sheet, and the homogeneous sulfonated PI layer is in situ produced by thermal imidization reaction. The PI-spin coated (PSC) layer provides improvements in capacity retention (86.47% vs 53.77% after 150 cycles at 1 C) and rate performance (99.21% enhancement at 5 C) as demonstrated by the NCM523-PSC||Li halfcell. The NCM523-PSC||graphite pouch full cell proves enhanced capacity retention (76.62% vs 58.58% after 500 cycles at 0.5 C) as well. The thermal safety of the NCM523-PSC cathode-based pouch cell is also significantly improved, with the critical temperature of thermal safety T 1 (the beginning temperature of obvious self-heating temperature) and thermal runaway temperature T 2 increased by 60.18 and 44.59 °C, respectively. Mechanistic studies show that the PSC layer has multiple effects as a passivation layer such as isolation of electrode−electrolyte contact, oxygen release suppression, solvation structure tuning, and the decomposition of carbonate solvents as well as LiPF 6 inhibition. This work provides a new path for a cost-effective and scalable design of electrode decoration with synergistic safety-electrochemical kinetics enhancement.

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Tailoring of a reinforcing and artificial self-assembled alkyl sulfonic acid layer electrolyte interphase on silicon as an anode for high-energy-density lithium-ion batteries

Cited by 8 publications

References 49 publications

Synthetic Strategy of Si@void@C Nanoparticles for High-Performance Lithium-Ion Battery Anodes

Synthetic Strategy of Si@void@C Nanoparticles for High-Performance Lithium-Ion Battery Anodes

Nanometer-Thick Gallic Acid Coatings Enhance the Electrochemical Performance of Silicon Anodes

Having Your Cake and Eating It Too: Electrode Processing Approach Improves Safety and Electrochemical Performance of Lithium-Ion Batteries

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