An amorphous Si film anode for all-solid-state lithium batteries

Miyazaki, Reona; Ohta, Nobuto; Ohnishi, T.; Sakaguchi, Isao; Takada, Kazunori

doi:10.1016/j.jpowsour.2014.08.109

Cited by 87 publications

(93 citation statements)

References 22 publications

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“…2b and 3b) are almost identical to those of the non-porous films (Figs. 2a and 3a) as well as to those of previously reported 0.3-µm-thick amorphous Si films in a thiophosphate-based solid electrolyte 7,8 . These results indicate that the amorphous Si phase, which forms the pore walls, is, indeed, responsible for the electrode reaction.…”

Section: Resultssupporting

confidence: 85%

“…Previous work has shown that amorphous Si anode films with thickness of up to 0.3 µm display high capacity and good cyclability (for instance, in our previous work 7,8 , 1st discharge capacity >3000 mAh g −1 and a capacity retention of~85% after 100 cycles) in solid electrolytes [7][8][9][10] . However, the active material loading in the 0.3-µm-thick film provided an areal capacity of 0.2 mAh cm −2 only, which is much lower than the values typical for commercial Li-ion batteries (2-4 mAh cm −2 ).…”

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confidence: 68%

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Porous amorphous silicon film anodes for high-capacity and stable all-solid-state lithium batteries

et al. 2018

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Owing to its high theoretical capacity of~4200 mAh g −1 and low electrode potential (<0.35 V vs. Li + /Li), utilising silicon as anode material can boost the energy density of rechargeable lithium batteries. Nevertheless, the volume change (~300%) in silicon during lithiation/ delithiation makes stable cycling challenging. Since some of the capacity fading mechanisms do not function in solid electrolytes, silicon anodes exhibit better cycling performance in solid electrolytes than liquids. Nonetheless, capacity can fade rapidly because of the difficulties in maintaining mechanical integrity in thick/bulky electrodes, especially when high active material loading is employed to deliver practically useful areal capacity. By contrast, silicon nanostructures can relieve deformation-induced stress and enhance cycling performance. Here we report enhanced cycling performances achieved using nanostructured silicon films and inorganic solid electrolyte and show that amorphous porous silicon films maintain high capacity upon cycling (2962 mAh g −1 and 2.19 mAh cm −2 after 100 cycles).

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Section: Resultssupporting

confidence: 85%

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confidence: 68%

Porous amorphous silicon film anodes for high-capacity and stable all-solid-state lithium batteries

et al. 2018

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“…Although the low ionic conductivity of solid electrolyte (SE) has limited so far the development of ASS−LIB to a thin film-type cell 3–5 , the recent discovery of highly ionic conductive SE such as sulfide-based compounds, of which conductivity was over 10 −3 S cm −1 (refs 6–10 ), prompt us to develop a bulk-type cell composed of active materials and SE powders. This is expected to lead high capacity ASS-LIBs instead of LIBs using organic liquid electrolytes (OLE−LIBs).…”

Section: Introductionmentioning

confidence: 99%

High capacity and stable all-solid-state Li ion battery using SnO2-embedded nanoporous carbon

Notohara

Urita

Yamamura

et al. 2018

Sci Rep

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Extensive research efforts are devoted to development of high performance all-solid-state lithium ion batteries owing to their potential in not only improving safety but also achieving high stability and high capacity. However, conventional approaches based on a fabrication of highly dense electrode and solid electrolyte layers and their close contact interface is not always applicable to high capacity alloy- and/or conversion-based active materials such as SnO2 accompanied with large volume change in charging-discharging. The present work demonstrates that SnO2-embedded nanoporous carbons without solid electrolyte inside the nanopores are a promising candidate for high capacity and stable anode material of all-solid-state battery, in which the volume change reactions are restricted in the nanopores to keep the constant electrode volume. A prototype all-solid-state full cell consisting of the SnO2-based anode and a LiNi1/3Co1/3Mn1/3O2-based cathode shows a good performance of 2040 Wh/kg at 268.6 W/kg based on the anode material weight.

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“…The rst strategy is to design and optimize the structure of Si. Various structures of Si, such as nanoparticles, 15 nanomembranes, 16 nanowires, 17 nanotubes, 18 hollow nanospheres, 19 and porous structures, [20][21][22][23] have been designed and reported. Particularly, hollow Si nanospheres with large inner void space and thin shell can accommodate the stress induced by the volume change and decrease the diffusion distance of the electrolyte and Li + during cycling.…”

Section: Introductionmentioning

confidence: 99%

Rigid TiO_2−xcoated mesoporous hollow Si nanospheres with high structure stability for lithium-ion battery anodes

Chen

et al. 2018

RSC Adv.

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An amorphous Si film anode for all-solid-state lithium batteries

Cited by 87 publications

References 22 publications

Porous amorphous silicon film anodes for high-capacity and stable all-solid-state lithium batteries

Porous amorphous silicon film anodes for high-capacity and stable all-solid-state lithium batteries

High capacity and stable all-solid-state Li ion battery using SnO2-embedded nanoporous carbon

Rigid TiO_2−xcoated mesoporous hollow Si nanospheres with high structure stability for lithium-ion battery anodes

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An amorphous Si film anode for all-solid-state lithium batteries

Cited by 87 publications

References 22 publications

Porous amorphous silicon film anodes for high-capacity and stable all-solid-state lithium batteries

Porous amorphous silicon film anodes for high-capacity and stable all-solid-state lithium batteries

High capacity and stable all-solid-state Li ion battery using SnO2-embedded nanoporous carbon

Rigid TiO2−xcoated mesoporous hollow Si nanospheres with high structure stability for lithium-ion battery anodes

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Rigid TiO_2−xcoated mesoporous hollow Si nanospheres with high structure stability for lithium-ion battery anodes