Cycling of a Lithium‐Ion Battery with a Silicon Anode Drives Large Mechanical Actuation

Lang, Jialiang; Ding, Bin; Zhu, Ting; Su, Hanxiao; Luo, Hao; Liu, Qi; Liu, Kai; Wang, Ke; Hussain, Naveed; Zhao, Chunsong; Li, Xiaoyan; Gao, Huajian; Wu, Hui

doi:10.1002/adma.201603061

Cited by 40 publications

(22 citation statements)

References 37 publications

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“…Actuator stress and strain for various actuator materials and systems. Contours of constant specific work are indicated by dashed lines (adapted from Lai et al 11 , Huber et al 26 and Lang et al 27 ). Both experimental and DFT data are included.…”

Section: Resultsmentioning

confidence: 99%

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Superelasticity and cryogenic linear shape memory effects of CaFe2As2

Sypek

Dusoe

et al. 2017

Nat Commun

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Shape memory materials have the ability to recover their original shape after a significant amount of deformation when they are subjected to certain stimuli, for instance, heat or magnetic fields. However, their performance is often limited by the energetics and geometry of the martensitic-austenitic phase transformation. Here, we report a unique shape memory behavior in CaFe2As2, which exhibits superelasticity with over 13% recoverable strain, over 3 GPa yield strength, repeatable stress–strain response even at the micrometer scale, and cryogenic linear shape memory effects near 50 K. These properties are acheived through a reversible uni-axial phase transformation mechanism, the tetragonal/orthorhombic-to-collapsed-tetragonal phase transformation. Our results offer the possibility of developing cryogenic linear actuation technologies with a high precision and high actuation power per unit volume for deep space exploration, and more broadly, suggest a mechanistic path to a class of shape memory materials, ThCr2Si2-structured intermetallic compounds.

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Section: Resultsmentioning

confidence: 99%

“…Fig. 3 shows a comparison of actuation capability, by plotting actuation stress vs. actuation strain, of CaFe 2 As 2 compared with other materials 11 , 26 , 27 . Note that materials with higher actuation work per unit volume appear toward the top and right of the plot in Fig.…”

Section: Resultsmentioning

confidence: 99%

Superelasticity and cryogenic linear shape memory effects of CaFe2As2

Sypek

Dusoe

et al. 2017

Nat Commun

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“…Silicon (Si) has been regarded as one of the most promising anode materials for the nextgeneration lithium ion battery, due to its high theoretical specic capacity ($4200 mA h g À1 ) and abundance on earth. [1][2][3] However, there are several scientic and technical challenges for Si anodes, [4][5][6][7] such as the huge volume change during lithium insertion, which is up to 300%. The stress induced by the volume change leads to cracks and pulverization of silicon, and peeling off the electrodes, nally accompanied by irreversible capacity loss.…”

Section: Introductionmentioning

confidence: 99%

Walnut-structure Si–G/C materials with high coulombic efficiency for long-life lithium ion batteries

Xiao

Ren

et al. 2018

RSC Adv.

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“…However, unfortunately, silicon anode still exhibits quite unstable during long cycling, particularly for the commercial silicon material with irregular morphology and large particle size (larger than hundreds nanometers) . On one hand, silicon anode undergoes a big strain and a large volume expansion about 400 % upon full lithium insertion process,, leading to pulverization and aggregation of the silicon and loss of electrical contact with the current collector, which would induce large irreversible capacity losses during cycling. Some of the silicon anode even fall below 50 % of their initial capacities after less than twenty cycles.…”

Section: Figurementioning

confidence: 99%

Improving the Performance of Micro‐Silicon Anodes in Lithium‐Ion Batteries with a Functional Carbon Nanotube Interlayer

et al. 2018

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There is currently intense research interest in silicon based anodes in lithium‐ion batteries. Modification approaches for nano‐sized silicon materials are popular, while much less attention has been paid on irregular bulk silicon particles. Here, we report that soft multiwall carbon nanotube membranes could be functioned as a shield on low‐cost micro‐sized silicon anodes to improve the cycling stability. The micro‐sized silicon could deliver a high reversible capacity of over 1000 mAh g−1 after 50 cycles at 0.36 A g−1 with the protection of a soft multiwall carbon nanotube membrane. Furthermore, the capacity could also be retained at ∼610 mAh g−1 at 0.5 A g−1 after 1200 cycles. The much improved performance upon cycling is mainly attributed to the alleviation of the large volume change. This strategy has also been proved effective in traditional nano‐silicon anodes, as a quite high capacity of about 5 mAh cm−2 could be obtained after 200 cycles. Overall, simply using a soft multiwall carbon nanotube membrane is a so far overlooked strategy, which is effective for improving performance of silicon anodes.

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Cycling of a Lithium‐Ion Battery with a Silicon Anode Drives Large Mechanical Actuation

Cited by 40 publications

References 37 publications

Superelasticity and cryogenic linear shape memory effects of CaFe2As2

Superelasticity and cryogenic linear shape memory effects of CaFe2As2

Walnut-structure Si–G/C materials with high coulombic efficiency for long-life lithium ion batteries

Improving the Performance of Micro‐Silicon Anodes in Lithium‐Ion Batteries with a Functional Carbon Nanotube Interlayer

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