• Design of Electrical Fiber Sorbents for Direct Air Capture with Electrically-Driven Temperature Vacuum Swing Adsorption
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  • 2025-08-29 13:07:39|
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ㅇ [Title]        Design of Electrical Fiber Sorbents for Direct Air Capture with Electrically-Driven Temperature Vacuum Swing Adsorption

ㅇ [Journal]  Advanced Materials
                                                                                                                                                                                                        
ㅇ [Author]    Young Hun Lee+, Jung Hun Lee+, Hwajoo Joo+, Michael Massen-Hane, Injun Park, Soohyeon Rho, Aqil Jamal, T.Alan Hatton, Dong-Yeun Koh*
 

ㅇ [Abstrct]

Joule heating has emerged as a highly efficient regeneration technique for temperature-vacuum swing adsorption (TVSA) in direct air capture (DAC), owing to its ability to provide rapid heating

and compatibility with  renewable electricity. Here, we report an electrified sorbent (e-fiber) specifically engineered to enable energy-efficient electrically driven TVSA (e-TVSA). The e-fiber is

fabricated by dip-coating a silver composite solution onto an open-porous polymer matrix, forming an ultrathin, interconnected conductive layer. This architecture maintains low diffusion

resistance while achieving very low electrical resistance of 0.5 Ω/cm.

As a result, the e-fiber module can reach 110 °C within 80 s at only 3V. Furthermore, the sorbent shows robust cycling stability, with just a 5% reduction in CO2 uptake under repeated e-TVSA at

400ppm CO2. To unravel the complex heat transfer dynamics induced by joule heating within the e-fiber module, we performed computational case studies. These analyses provide critical

insights for design optimization and system engineering, highlighting the promise of joule-heated sorbents in scalable DAC systems.



 

 

 
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