Film of lignocellulosic carbon material for self-supporting electrodes in electric double-layer capacitors

Funabashi, Tsubasa; Mizuno, Jun; Sato, Masamichi; Kitajima, Masao; Matsuura, Makoto; Shoji, Shuichi

doi:10.1063/1.4820430

Cited by 7 publications

(12 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The FWCM was prepared from raw wood (Picea jezoensis) purchased from the Durart Company (Saitama, Japan). It was carbonized at 300 • C for six hours to form a film without cracks, then heated to 750 • C for 30 min to enhance the adsorption capacity by improving the porous structure [8]. The FMCM was sliced along the tracheid into 100-µm-thick pieces.…”

Section: Methodsmentioning

confidence: 99%

“…VUV treatment was performed with a 172-nm Xe 2 * excimer lamp (UER20-172, Ushio, Japan) [8]. The samples were placed in a treatment chamber, and the O 2 partial pressure was introduced.…”

Section: Vuv Treatmentmentioning

confidence: 99%

“…The porous properties of AC are widely used for water purification, gas filtering, and gas adsorption [3][4][5][6]. In addition, the electrical conductivity of the sp 2 carbons enables other potential applications, such as electrodes for electronic and electrochemical devices [7] and double-layer capacitors [8].…”

Section: Introductionmentioning

confidence: 99%

“…Previously, we developed a thin binder-less wood-based AC, a film of woody carbon material (FWCM), that has natural pore structures. It originated from Picea jezoensis (Jezo Spruce) and had an electrical conductivity of 3 × 10 −2 S/m [8]. FWCM has a unique physical characteristic (thinness, flexibility), although the adsorption characteristic is inferior to chemical products-based AC as same as other wood-based AC.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the VUV directly cleaves chemical bonds, such as O-H (458 kJ/mol) and C=C (589 kJ/mol), which are difficult to break via UV light. We previously reported a VUV treatment of FWCM under an O 2 partial pressure of 5.0 × 10 4 Pa [8], which enhanced the iodine adsorption capacity by 21.2%. However, the effects of the VUV treatment were a tradeoff between O 3 and VUV effects, depending on the O 2 partial pressure.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Effects of Oxygen Partial Pressure on Wood-Based Activated Carbon Treated with Vacuum Ultraviolet Light

et al. 2021

Self Cite

View full text Add to dashboard Cite

This study uses vacuum ultraviolet (VUV) light with a wavelength of 172 nm as a surface treatment to enhance the adsorption capacity of wood-based activated carbon (AC). The AC surface treatment is performed under three O2 partial pressure conditions—5.0 × 104 Pa, where ozone (O3) effects dominate; 6.3 × 10−6 Pa, where VUV effects dominate; and 1.9 × 103 Pa for a balanced condition. For the O3-dominant condition, only graphene edge defects are etched (no aromatic carbon bonds are etched), resulting in increased surface roughness. When the VUV effects dominate, aromatic carbon bonds are cleaved, which then reacted with O2 or water adsorbed inside the pores. This increased both the number and size of the mesopores. Under the balanced conditions, the water adsorption capacity was enhanced by 45.5%, which is higher than that obtained before VUV exposure or with VUV under other conditions. This is because the surface roughness increased, as well as the pore sizes and numbers under the balanced condition. These results indicate that we can control VUV-based AC surface treatments via O2 partial pressure.

show abstract

Section: Methodsmentioning

confidence: 99%

“…VUV treatment was performed with a 172-nm Xe 2 * excimer lamp (UER20-172, Ushio, Japan) [8]. The samples were placed in a treatment chamber, and the O 2 partial pressure was introduced.…”

Section: Vuv Treatmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effects of Oxygen Partial Pressure on Wood-Based Activated Carbon Treated with Vacuum Ultraviolet Light

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

Controlled Synthesis of Nanoporous Nickel Oxide with Two‐Dimensional Shapes through Thermal Decomposition of Metal–Cyanide Hybrid Coordination Polymers

Zakaria

Salunkhe

et al. 2015

Chemistry A European J

View full text Add to dashboard Cite

The urgent need for nanoporous metal oxides with highly crystallized frameworks is motivating scientists to try to discover new preparation methods, because of their wide use in practical applications. Recent work has demonstrated that two-dimensional (2D) cyanide-bridged coordination polymers (CPs) are promising materials and appropriate for this purpose (Angew. Chem. Int. Ed.- 2013, 52, 1235). After calcination, 2D CPs can be transformed into nanoporous metal oxides with a highly accessible surface area. Here, this strategy is adopted in order to form 2D nanoporous nickel oxide (NiO) with tunable porosity and crystallinity, using trisodium citrate dihydrate as a controlling agent. The presence of trisodium citrate dihydrate plays a key role in the formation of 2D nanoflakes by controlling the nucleation rate and the crystal growth. The size of the nanoflakes gradually increases by augmenting the amount of trisodium citrate dihydrate in the reaction. After heating the as-prepared CPs in air at different temperatures, nanoporous NiO can be obtained. During this thermal treatment, organic units (carbon and nitrogen) are completely removed and only the metal content remains to take part in the formation of nanoporous NiO. In the case of large-sized 2D CP nanoflakes, the original 2D flake-shapes are almost retained, even after thermal treatment at low temperature, but they are completely destroyed at high temperature because of further crystallization in the framework. Nanoporous NiO with high surface area shows significant efficiency and interesting results for supercapacitor application.

show abstract

Microfluidic Organic Light-Emitting Devices Using Liquid Organic Semiconductors

Kasahara

Mizuno

2015

Organic Electronics Materials and Devices

View full text Add to dashboard Cite

Film of lignocellulosic carbon material for self-supporting electrodes in electric double-layer capacitors

Cited by 7 publications

References 17 publications

Effects of Oxygen Partial Pressure on Wood-Based Activated Carbon Treated with Vacuum Ultraviolet Light

Effects of Oxygen Partial Pressure on Wood-Based Activated Carbon Treated with Vacuum Ultraviolet Light

Controlled Synthesis of Nanoporous Nickel Oxide with Two‐Dimensional Shapes through Thermal Decomposition of Metal–Cyanide Hybrid Coordination Polymers

Microfluidic Organic Light-Emitting Devices Using Liquid Organic Semiconductors

Contact Info

Product

Resources

About