End-capping of Hydrogen Bonds: A Strategy for Blocking The Proton Conduction Pathway in Aqueous Electrolytes
Name:
1-s2.0-S2405829722006675-main_removed.pdf
Size:
1.408Mb
Format:
PDF
Description:
Accepted Manuscript
Embargo End Date:
2024-12-09
Name:
ScienceDirect_files_12Dec2022_07-16-17.967.zip
Size:
20.15Mb
Format:
application/zip
Description:
Supplementary material
Embargo End Date:
2024-12-09
Name:
1-s2.0-S2405829722006675-ga1_lrg.jpg
Size:
107.2Kb
Format:
JPEG image
Description:
Graphical abstract
Type
ArticleAuthors
Zhao, ZhimingYin, Jun

Yin, Jian
Guo, Xianrong
Lei, Yongjiu

Tian, Zhengnan
Zhu, Yunpei
Mohammed, Omar F.

Alshareef, Husam N.

KAUST Department
Core Labs, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi ArabiaPhysical Science and Engineering (PSE) Division
KAUST Solar Center (KSC)
NMR
Material Science and Engineering Program
Chemical Science Program
Advanced Membranes and Porous Materials Research Center
KAUST Catalysis Center (KCC)
Date
2022-12-09Embargo End Date
2024-12-09Permanent link to this record
http://hdl.handle.net/10754/686357
Metadata
Show full item recordAbstract
Sustainable battery development is becoming a key goal for storing renewable energy on a large scale. Toward this goal, great hopes are placed on the use of aqueous electrolytes. However, with high expectations, come increasing challenges, represented by the parasitic hydrogen evolution reaction (HER) on the anode of aqueous batteries. Here, we propose a new strategy to mitigate HER in aqueous batteries by the regulation of mass transfer kinetics, namely blocking the pathway of proton conduction by the end-capping of H-bond using N-methyl-2-pyrrolidone (NMP). The NMP structure possesses the H-bond acceptor but no H-bond donor sites, a feature that can effectively cut off H-bond propagation, and further block the pathway of proton transport in aqueous electrolytes. Hence, the modulated electrolyte confers a combination of enhanced cathodic and anodic stability, dendrite-free metal plating/stripping, and a high average Coulombic efficiency (CE) of 99.2%. Further, the end-capping of the H-bond network in electrolytes results in substantially more stable full-cell batteries that pair the metal anode with Prussian blue analogue (PBA) and polyaniline (PANI) cathodes at both room and low temperature. The “end-capping” concept in polymers is broadened to aqueous solutions for the first time here, providing a potential direction to revolutionize aqueous batteries for efficient energy storage.Citation
Zhao, Z., Yin, J., Yin, J., Guo, X., Lei, Y., Tian, Z., Zhu, Y., Mohammed, O. F., & Alshareef, H. N. (2022). End-capping of Hydrogen Bonds: A Strategy for Blocking The Proton Conduction Pathway in Aqueous Electrolytes. Energy Storage Materials. https://doi.org/10.1016/j.ensm.2022.12.010Publisher
Elsevier BVJournal
Energy Storage MaterialsAdditional Links
https://linkinghub.elsevier.com/retrieve/pii/S2405829722006675ae974a485f413a2113503eed53cd6c53
10.1016/j.ensm.2022.12.010