Practically Relevant Research on Silicon‐Based Lithium‐Ion Battery Anodes

Ji, Qing; Xia, Yonggao; Zhu, Jin; Hu, Bing; Müller‐Buschbaum, Peter; Cheng, Ya‐Jun

doi:10.1002/9781119407713.ch5

Cited by 5 publications

(4 citation statements)

References 184 publications

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“…Some researches point out that although nanoscale silicon anode can reach about ten times the capacity of graphite anode, the price is about 1000 times higher. [ 4 ] To mitigate this problem, biomass materials, in particular the photosynthesis and silicification in plants, provide a potential solution.…”

Section: Introductionmentioning

confidence: 99%

High‐Capacity Sub‐Nano Divalent Silicon from Biosilicification

Liu

Wang

et al. 2023

Advanced Energy Materials

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In terms of high capacity and reliable safety, low‐valent silicon‐based composites with small grain sizes are practicable anode materials for lithium‐ion batteries. However, robust tetravalent silicon precursors make the synthesis hard to be green. Using biosilicification in water hyacinth (Eichhornia crassipes), it is found to be a superior natural precursor of low‐valent silicon. The biogenic sub‐nano (0.5 nm) siliceous dots composite (EC‐SiOC) shows a reversible conversion mechanism between Si─O and C─O bonds, unlike previous lithium storage mechanisms associated with alloying reactions. Due to the homogeneous biogenic structure facilitating the solid‐phase reaction, the normalized energy consumption of pyrolytic EC‐SiOC is about 80% lower than the carbothermic reduction of silica, similar to molten salt electrolysis. Statistically, the sampling survey of EC‐SiOC from different regions shows a high average capacity of 749.9 mAh g−1 under a current density of 100 mA g−1. This study reveals the great potential of biomass precursors for synthesizing Si─O─C materials.

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Section: Introductionmentioning

confidence: 99%

High‐Capacity Sub‐Nano Divalent Silicon from Biosilicification

Liu

Wang

et al. 2023

Advanced Energy Materials

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“…On the anode side, traditional graphite electrodes will produce no volume effect during charge and discharge, and the properties of binders exert no significant influence on the charge-discharge cyclic performance [4][5][6]. With the development of high-capacity silicon materials, silicon-based materials have aroused more and more concern and a large amount of research has been carried out, but there is a huge volume effect in silicon materials [7][8][9]. Thus, silicon-based materials raise comparatively high requirements for binders; with an intent to gain stable cyclic performance of silicon materials, it is requisite to explore and study silicon-based binders [10,11].…”

Section: Introductionmentioning

confidence: 99%

Effect of Different Binder Proportions on Properties of Silicon-based Anode Materials

2021

IJETI

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With the development of lithium-ion battery technology, silicon anode is deemed as an ideal next-generation anode materials by virtue of its extremely high specific capacity. Nevertheless, higher requirements are raised for the properties of the binder owing to the high volume change rate of silicon anode during charging and discharging and the thickening of SEI film. In respect of the binders such as polyacrylic acid (PAA), polyvinyl alcohol (PVA), sodium alginate (Alginate), sodium carboxymethylcellulose (CMC) in possession of large-scale application value, this paper studies the effects of different binders and mixed binders with different ratios on the properties of silicon anode materials. As a result, it is suggested that the binders acquired when PAA:PVA=9:1 can render it possible for the electrode to be provided with better charge-discharge cyclic performance.

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“…The latter is caused by cation mixing because of the similar radii of Li + (0.076 nm) and Ni 2+ (0.069 nm), which leads to a higher activation energy barrier and structural instability . However, the alloying reaction of Si and Li will also bring multiple problems . The larger‐than‐300% volume change during the alloy–de‐alloying reactions causes pulverization of Si particles, disintegration of the electrode, and excessive growth of the solid electrolyte interface, leading to capacity fading and structural safety concerns …”

Section: Introductionmentioning

confidence: 99%

“…27,28 However, the alloying reaction of Si and Li will also bring multiple problems. 29,30 The larger-than-300% volume change during the alloy-de-alloying reactions causes pulverization of Si particles, disintegration of the electrode, and excessive growth of the solid electrolyte interface, leading to capacity fading and structural safety concerns. 31,32 At present, the studies about battery safety are mainly focused on only cathodes or anodes, and many studies just concentrate on coin-type half-cells as the research object.…”

Section: Introductionmentioning

confidence: 99%

Thermal safety studies of high energy density lithium‐ion batteries under different states of charge

Liu

et al. 2020

Int J Energy Res

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Summary The popularity of lithium‐ion batteries in electric vehicles has promoted the increase of its energy density, and battery cathode and anode materials have developed rapidly in recent years. As the next generation of material systems, high‐nickel‐content Li‐Ni‐Co‐Mn oxide cathode and high‐silicon‐content Si‐C anode material systems have a high potential for further application. However, safety is a key indicator for their use in traction batteries. We thus conducted a thermal safety analysis of the pouch cells of such a system for different states of charge and revealed the key factors for the thermal safety evolution of batteries by analyzing the morphology and thermal stability of cathodes and anodes.

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Practically Relevant Research on Silicon‐Based Lithium‐Ion Battery Anodes

Cited by 5 publications

References 184 publications

High‐Capacity Sub‐Nano Divalent Silicon from Biosilicification

High‐Capacity Sub‐Nano Divalent Silicon from Biosilicification

Effect of Different Binder Proportions on Properties of Silicon-based Anode Materials

Thermal safety studies of high energy density lithium‐ion batteries under different states of charge

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