Exceptional capacitive deionization rate and capacity by block copolymer–based porous carbon fibers
| dc.contributor.author | Liu, Tianyu | en |
| dc.contributor.author | Serrano, Joel | en |
| dc.contributor.author | Elliott, John | en |
| dc.contributor.author | Yang, Xiaozhou | en |
| dc.contributor.author | Cathcart, William | en |
| dc.contributor.author | Wang, Zixuan | en |
| dc.contributor.author | He, Zhen | en |
| dc.contributor.author | Liu, Guoliang | en |
| dc.contributor.department | Civil and Environmental Engineering | en |
| dc.contributor.department | Chemistry | en |
| dc.contributor.department | Macromolecules Innovation Institute | en |
| dc.date.accessioned | 2020-05-07T12:46:13Z | en |
| dc.date.available | 2020-05-07T12:46:13Z | en |
| dc.date.issued | 2020-04-17 | en |
| dc.description.abstract | Capacitive deionization (CDI) is energetically favorable for desalinating low-salinity water. The bottlenecks of current carbon-based CDI materials are their limited desalination capacities and time-consuming cycles, caused by insufficient ion-accessible surfaces and retarded electron/ion transport. Here, we demonstrate porous carbon fibers (PCFs) derived from microphase-separated poly(methyl methacrylate)-block-polyacrylonitrile (PMMA-b-PAN) as an effective CDI material. PCF has abundant and uniform mesopores that are interconnected with micropores. This hierarchical porous structure renders PCF a large ion-accessible surface area and a high desalination capacity. In addition, the continuous carbon fibers and interconnected porous network enable fast electron/ion transport, and hence a high desalination rate. PCF shows desalination capacity of 30 mgNaCl g⁻¹ PCF and maximal time-average desalination rate of 38.0 mgNaCl g⁻¹ PCF min⁻¹, which are about 3 and 40 times, respectively, those of typical porous carbons. Our work underlines the promise of block copolymer–based PCF for mutually high-capacity and high-rate CDI. | en |
| dc.description.sponsorship | This material is based on work supported by the Air Force Office of Scientific Research under award number FA9550-17-1-0112 through the Young Investigator Program. | en |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.doi | https://doi.org/10.1126/sciadv.aaz0906 | en |
| dc.identifier.issue | 16 | en |
| dc.identifier.uri | http://hdl.handle.net/10919/97998 | en |
| dc.identifier.volume | 6 | en |
| dc.language.iso | en | en |
| dc.publisher | American Association for the Advancement of Science | en |
| dc.rights | Creative Commons Attribution-NonCommercial 4.0 International | en |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc/4.0/ | en |
| dc.title | Exceptional capacitive deionization rate and capacity by block copolymer–based porous carbon fibers | en |
| dc.title.serial | Science Advances | en |
| dc.type | Article - Refereed | en |
| dc.type.dcmitype | Text | en |