Three-Dimensional Cobalt Hydroxide Hollow Cube/Vertical Nanosheets with High Desalination Capacity and Long-Term Performance Stability

Faradaic electrode materials have significantly improved the performance of membrane capacitive deionization, which offers an opportunity to produce freshwater from seawater or brackish water in an energy-efficient way. However, Faradaic materials hold the drawbacks of slow desalination rate due to...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Yuecheng Xiong, Fei Yu, Stefanie Arnold, Lei Wang, Volker Presser, Yifan Ren, Jie Ma
Formato:	article
Lenguaje:	EN
Publicado:	American Association for the Advancement of Science 2021
Materias:	Science Q
Acceso en línea:	https://doaj.org/article/2dc016ef0e674a24be7481f3a5a267cd
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:2dc016ef0e674a24be7481f3a5a267cd
record_format	dspace
spelling	oai:doaj.org-article:2dc016ef0e674a24be7481f3a5a267cd2021-11-08T08:26:28ZThree-Dimensional Cobalt Hydroxide Hollow Cube/Vertical Nanosheets with High Desalination Capacity and Long-Term Performance Stability2639-527410.34133/2021/9754145https://doaj.org/article/2dc016ef0e674a24be7481f3a5a267cd2021-01-01T00:00:00Zhttp://dx.doi.org/10.34133/2021/9754145https://doaj.org/toc/2639-5274Faradaic electrode materials have significantly improved the performance of membrane capacitive deionization, which offers an opportunity to produce freshwater from seawater or brackish water in an energy-efficient way. However, Faradaic materials hold the drawbacks of slow desalination rate due to the intrinsic low ion diffusion kinetics and inferior stability arising from the volume expansion during ion intercalation, impeding the engineering application of capacitive deionization. Herein, a pseudocapacitive material with hollow architecture was prepared via template-etching method, namely, cuboid cobalt hydroxide, with fast desalination rate (3.3 mg (NaCl)·g-1 (h-Co(OH)2)·min-1 at 100 mA·g-1) and outstanding stability (90% capacity retention after 100 cycles). The hollow structure enables swift ion transport inside the material and keeps the electrode intact by alleviating the stress induced from volume expansion during the ion capture process, which is corroborated well by in situ electrochemical dilatometry and finite element simulation. Additionally, benefiting from the elimination of unreacted bulk material and vertical cobalt hydroxide nanosheets on the exterior surface, the synthesized material provides a high desalination capacity (117±6 mg (NaCl)·g-1 (h-Co(OH)2) at 30 mA·g-1). This work provides a new strategy, constructing microscale hollow faradic configuration, to further boost the desalination performance of Faradaic materials.Yuecheng XiongFei YuStefanie ArnoldLei WangVolker PresserYifan RenJie MaAmerican Association for the Advancement of SciencearticleScienceQENResearch, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Science Q
spellingShingle	Science Q Yuecheng Xiong Fei Yu Stefanie Arnold Lei Wang Volker Presser Yifan Ren Jie Ma Three-Dimensional Cobalt Hydroxide Hollow Cube/Vertical Nanosheets with High Desalination Capacity and Long-Term Performance Stability
description	Faradaic electrode materials have significantly improved the performance of membrane capacitive deionization, which offers an opportunity to produce freshwater from seawater or brackish water in an energy-efficient way. However, Faradaic materials hold the drawbacks of slow desalination rate due to the intrinsic low ion diffusion kinetics and inferior stability arising from the volume expansion during ion intercalation, impeding the engineering application of capacitive deionization. Herein, a pseudocapacitive material with hollow architecture was prepared via template-etching method, namely, cuboid cobalt hydroxide, with fast desalination rate (3.3 mg (NaCl)·g-1 (h-Co(OH)2)·min-1 at 100 mA·g-1) and outstanding stability (90% capacity retention after 100 cycles). The hollow structure enables swift ion transport inside the material and keeps the electrode intact by alleviating the stress induced from volume expansion during the ion capture process, which is corroborated well by in situ electrochemical dilatometry and finite element simulation. Additionally, benefiting from the elimination of unreacted bulk material and vertical cobalt hydroxide nanosheets on the exterior surface, the synthesized material provides a high desalination capacity (117±6 mg (NaCl)·g-1 (h-Co(OH)2) at 30 mA·g-1). This work provides a new strategy, constructing microscale hollow faradic configuration, to further boost the desalination performance of Faradaic materials.
format	article
author	Yuecheng Xiong Fei Yu Stefanie Arnold Lei Wang Volker Presser Yifan Ren Jie Ma
author_facet	Yuecheng Xiong Fei Yu Stefanie Arnold Lei Wang Volker Presser Yifan Ren Jie Ma
author_sort	Yuecheng Xiong
title	Three-Dimensional Cobalt Hydroxide Hollow Cube/Vertical Nanosheets with High Desalination Capacity and Long-Term Performance Stability
title_short	Three-Dimensional Cobalt Hydroxide Hollow Cube/Vertical Nanosheets with High Desalination Capacity and Long-Term Performance Stability
title_full	Three-Dimensional Cobalt Hydroxide Hollow Cube/Vertical Nanosheets with High Desalination Capacity and Long-Term Performance Stability
title_fullStr	Three-Dimensional Cobalt Hydroxide Hollow Cube/Vertical Nanosheets with High Desalination Capacity and Long-Term Performance Stability
title_full_unstemmed	Three-Dimensional Cobalt Hydroxide Hollow Cube/Vertical Nanosheets with High Desalination Capacity and Long-Term Performance Stability
title_sort	three-dimensional cobalt hydroxide hollow cube/vertical nanosheets with high desalination capacity and long-term performance stability
publisher	American Association for the Advancement of Science
publishDate	2021
url	https://doaj.org/article/2dc016ef0e674a24be7481f3a5a267cd
work_keys_str_mv	AT yuechengxiong threedimensionalcobalthydroxidehollowcubeverticalnanosheetswithhighdesalinationcapacityandlongtermperformancestability AT feiyu threedimensionalcobalthydroxidehollowcubeverticalnanosheetswithhighdesalinationcapacityandlongtermperformancestability AT stefaniearnold threedimensionalcobalthydroxidehollowcubeverticalnanosheetswithhighdesalinationcapacityandlongtermperformancestability AT leiwang threedimensionalcobalthydroxidehollowcubeverticalnanosheetswithhighdesalinationcapacityandlongtermperformancestability AT volkerpresser threedimensionalcobalthydroxidehollowcubeverticalnanosheetswithhighdesalinationcapacityandlongtermperformancestability AT yifanren threedimensionalcobalthydroxidehollowcubeverticalnanosheetswithhighdesalinationcapacityandlongtermperformancestability AT jiema threedimensionalcobalthydroxidehollowcubeverticalnanosheetswithhighdesalinationcapacityandlongtermperformancestability
_version_	1718442696828256256

Three-Dimensional Cobalt Hydroxide Hollow Cube/Vertical Nanosheets with High Desalination Capacity and Long-Term Performance Stability

Ejemplares similares