2017
DOI: 10.1021/acsami.7b04069
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Pseudocapacitive Characteristics of Low-Carbon Silicon Oxycarbide for Lithium-Ion Capacitors

Abstract: Lithium-ion capacitors (LICs) and lithium-ion batteries (LIBs) are important energy storage devices. As a material with good mechanical, thermal, and chemical properties, low-carbon silicon oxycarbide (LC-SiOC), a kind of silicone oil-derived SiOC, is of interest as an anode material, and we have examined the electrochemical behavior of LC-SiOC in LIB and LIC devices. We found that the lithium storage mechanism in LC-SiOC, prepared by pyrolysis of phenyl-rich silicon oil, depends on an oxygen-driven rather tha… Show more

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Cited by 56 publications
(24 citation statements)
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“…The maximum power density is 14431 W kg −1 with the energy density of 202 Wh kg −1 , and the maximum energy density is 341 Wh kg −1 with the power density as high as 722 W kg −1 for HPC//HPC LIC. The obtained values are quite higher than some of the researches based on graphene, AC and some metal oxides, such as Fe 3 O 4 ‐graphene//AC, LiMnBO 3 //polyaniline nanofiber, low‐carbon silicon oxycarbide//AC, S‐doped graphene microspheres, TiO 2 //graphene, LiNi 0.5 Mn 1.5 O 4 //AC, Nb 2 O 5 ‐C//AC, graphene//graphene, TiO 2 reduced graphene//AC, Nb 2 O 5 @C//AC, as presented in the Ragone plots (Figure d). The capacitance loss is 5 % after the initial 500 cycles at 2 A g −1 during the cycle performance.…”
Section: Resultsmentioning
confidence: 63%
“…The maximum power density is 14431 W kg −1 with the energy density of 202 Wh kg −1 , and the maximum energy density is 341 Wh kg −1 with the power density as high as 722 W kg −1 for HPC//HPC LIC. The obtained values are quite higher than some of the researches based on graphene, AC and some metal oxides, such as Fe 3 O 4 ‐graphene//AC, LiMnBO 3 //polyaniline nanofiber, low‐carbon silicon oxycarbide//AC, S‐doped graphene microspheres, TiO 2 //graphene, LiNi 0.5 Mn 1.5 O 4 //AC, Nb 2 O 5 ‐C//AC, graphene//graphene, TiO 2 reduced graphene//AC, Nb 2 O 5 @C//AC, as presented in the Ragone plots (Figure d). The capacitance loss is 5 % after the initial 500 cycles at 2 A g −1 during the cycle performance.…”
Section: Resultsmentioning
confidence: 63%
“…However, the hydrofluoric acid rinse after the aerosol spray drying and carbonization synthesis seems to also be a plausible cause for the porosity. For a similar purpose, low carbon silicon oxycarbide (LC-SiOC) was prepared through pyrolysis of silicone oil [96]. For activation purposes, LC-SiOC needs to be prelithiated, which was performed through contact with Li foil in the presence of electrolyte (1 M LiPF 6 in a solution of ethylene carbonate/dimethyl carbonate/ethyl methyl carbonate, 1 : 1 : 1, vol %).…”
Section: Silicon-based Compositesmentioning
confidence: 99%
“…The liquid route allows facile mixing with other materials for making homogeneous composites. Pure PDCs have been tested as a material for lithium-ion batteries [ 27 , 28 , 29 ] and lithium-ion capacitors [ 30 ] as they exhibit high capacity up to 920 mAh g −1 , good cyclability and good rate capability. PDCs have also been considered as an electrochemically active and mechanically resistant matrix for lithium-alloying compounds such silicon [ 31 , 32 ], tin [ 33 , 34 ] or antimony [ 35 , 36 ].…”
Section: Introductionmentioning
confidence: 99%