Direct fabrication of high performance moisture-driven power generators using laser induced graphitization of sodium chloride-impregnated cellulose nanofiber films

Eun, Jakyung; Jeon, Sangmin

doi:10.1016/j.nanoen.2021.106772

Cited by 34 publications

(18 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Section: Resultsmentioning

confidence: 99%

“…34,35 S1, ESI †). 9,11,[17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33] Energy & Environmental Science Paper (Fig. S10, ESI †) at RH of 70%.…”

Section: Characterization and Electrical Performance Of The Vhgmentioning

confidence: 99%

“…2(f) and Tables S1, S2, ESI, † the output performance of VHG was much higher than that of most power-generating devices reported previously based on either water adsorption or temperature difference under the same conditions. 9,11,12,14,[16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][32][33][34]36,38,40,41,[43][44][45][46][47][48][49][50][51][52][53][54][55][56][57][58][59][60][61]…”

Section: Characterization and Electrical Performance Of The Vhgmentioning

confidence: 99%

“…RT: room temperature. (f) A performance comparison of the typical water adsorption enabled electric generators reported for various macroscopic devices with inert electrodes (TableS1, ESI †) 9,11,[17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33].…”

mentioning

confidence: 99%

See 3 more Smart Citations

Vapor and heat dual-drive sustainable power for portable electronics in ambient environments

Bai

Guang

et al. 2022

Energy Environ. Sci.

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 99%

“…34,35 S1, ESI †). 9,11,[17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33] Energy & Environmental Science Paper (Fig. S10, ESI †) at RH of 70%.…”

Section: Characterization and Electrical Performance Of The Vhgmentioning

confidence: 99%

Section: Characterization and Electrical Performance Of The Vhgmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Vapor and heat dual-drive sustainable power for portable electronics in ambient environments

Bai

Guang

et al. 2022

Energy Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…The moisture-electric energy transformation (MEET) performance of an MPG is primarily affected by the hygroscopicity of the MPG, the number of dissociable ions, and the ion concentration gradient. , Among the various materials for an MPG, graphitic carbon is considered the best due to its large specific surface area for moisture intake and abundant oxygen-containing functional groups capable of generating dissociated charge carriers. − Graphitic carbon can be easily obtained by carbonizing synthetic or natural organic materials, but it is challenging to create a concentration gradient of oxygen-containing functional groups, especially in the thickness direction of a very thin substrate.…”

Section: Introductionmentioning

confidence: 99%

Performance Enhancement of Moisture-driven Power Generators by Photofragmentation of Inorganic Salt Particles

Eun

Jeon

2022

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

We developed a novel method based on the photofragmentation of inorganic salt particles for improving the moisture-electric energy transformation performance of a moisturedriven power generator (MPG). Infrared laser irradiation on cellulose nanofiber films (CNFs) prepared by a TEMPO (2,2,6,6tetramethylpiperidine-1-oxyl radical)-mediated oxidation of bleached pulp induced a photothermal conversion of CNFs to porous graphitic carbon films (GCFs) with the catalyst-derived Na 2 O 2 particles. Since the laser beam was focused on the top surface of CNF, the gradients of the photothermal conversion of CNFs and Na 2 O 2 concentration were created along the thickness direction. Subsequent irradiation with ultraviolet (UV) light induced the photofragmentation of the micrometer-sized Na 2 O 2 particles into smaller ones, which increased the surface area of the salt particles in contact with the GCFs and consequently increased the number of effective dissociable charge carriers. When the GCF was exposed to moisture, the dissociated sodium ions migrated along the preformed concentration gradient, producing continuous outputs of current and voltage. At 90% relative humidity, the maximum voltage and current density outputs of the MPG increased from 0.91 V and 18.7 μA/cm 2 before UV irradiation to 1.10 V and 56.2 μA/cm 2 after UV irradiation, respectively. Additionally, we demonstrated that a green light-emitting diode could be turned on without capacitors or rectifiers during normal breathing while wearing a face mask with three GCF arrays attached (each 3 mm × 3 mm × 0.1 mm in size).

show abstract

Biomimetic Aerogel for Moisture‐Induced Energy Harvesting and Self‐Powered Electronic Skin

Zhang

Wang

et al. 2022

Adv Funct Materials

View full text Add to dashboard Cite

Moisture–electric generator (MEG)‐based blue energy is widely studied. There is still a significant challenge in improving the power of the MEGs system and expanding its application in self‐powered electronic skin. Inspired by the structure of ferns, a biomimetic moisture–electric aerogel is designed to collect energy. Polyvinyl alcohol dendritic colloids act as “roots” and “stems” to provide support and channels to transport water molecules. Meanwhile, “leaf‐like” graphene oxide sheets generate electricity through direct interaction with water. Besides, based on the above biomimetic structure, this work further enhances the output performance of MEGs by increasing the specific surface area (120.4 m2 g−1) and introducing an ultra‐high ion density gradient (from −35 to +37 mV). Meanwhile, due to the excellent water absorption, the MEGs show good salt resistance and cyclic stability. By constructing unique biomimetic structures, ultra‐high ion density gradient, and regulating environmental conditions, a high‐performance MEG is obtained, including ultra‐high open‐circuit voltage (1.9 V) and short‐circuit current (82.5 µA), the industry‐leading power density among MEGs with continuous output is reported in the literature (22.55 µW cm−2). Besides, the MEGs can accurately respond to environmental and pressure changes, showing its application potential in self‐powered electronic skin.

show abstract

Direct fabrication of high performance moisture-driven power generators using laser induced graphitization of sodium chloride-impregnated cellulose nanofiber films

Cited by 34 publications

References 35 publications

Vapor and heat dual-drive sustainable power for portable electronics in ambient environments

Vapor and heat dual-drive sustainable power for portable electronics in ambient environments

Performance Enhancement of Moisture-driven Power Generators by Photofragmentation of Inorganic Salt Particles

Biomimetic Aerogel for Moisture‐Induced Energy Harvesting and Self‐Powered Electronic Skin

Contact Info

Product

Resources

About