TY - JOUR
T1 - High-Capacity NH4+ Charge Storage in Covalent Organic Frameworks
AU - Tian, Zhengnan
AU - Kale, Vinayak Swamirao
AU - Wang, Yizhou
AU - Kandambeth, Sharath
AU - Czaban-Jozwiak, Justyna
AU - Shekhah, Osama
AU - Eddaoudi, Mohamed
AU - Alshareef, Husam N.
N1 - KAUST Repository Item: Exported on 2021-11-11
Acknowledged KAUST grant number(s): OSR-CRG2017-3379
Acknowledgements: Research reported in this manuscript was funded by King Abdullah University of Science and Technology (KAUST) under competitive research grant number OSR-CRG2017-3379.
PY - 2021/11/5
Y1 - 2021/11/5
N2 - Ammonium ions (NH4+), as non-metallic charge carriers, have spurred great research interest in the realm of aqueous batteries. Unfortunately, most inorganic host materials used in these batteries are still limited by the sluggish diffusion kinetics. Here, we report a unique hydrogen bond chemistry to employ covalent organic frameworks (COFs) for NH4+ ion storage, which achieves a high capacity of 220.4 mAh g–1 at a current density of 0.5 A g–1. Combining the theoretical simulation and materials analysis, a universal mechanism for the reaction of nitrogen and oxygen bridged by hydrogen bonds is revealed. In addition, we explain the solvation behavior of NH4+, leading to a relationship between redox potential and desolvation energy barrier. This work provides a new insight into NH4+ ion storage in host materials based on hydrogen bond chemistry. This mechanism can be leveraged to design and develop COFs for electrochemical energy storage.
AB - Ammonium ions (NH4+), as non-metallic charge carriers, have spurred great research interest in the realm of aqueous batteries. Unfortunately, most inorganic host materials used in these batteries are still limited by the sluggish diffusion kinetics. Here, we report a unique hydrogen bond chemistry to employ covalent organic frameworks (COFs) for NH4+ ion storage, which achieves a high capacity of 220.4 mAh g–1 at a current density of 0.5 A g–1. Combining the theoretical simulation and materials analysis, a universal mechanism for the reaction of nitrogen and oxygen bridged by hydrogen bonds is revealed. In addition, we explain the solvation behavior of NH4+, leading to a relationship between redox potential and desolvation energy barrier. This work provides a new insight into NH4+ ion storage in host materials based on hydrogen bond chemistry. This mechanism can be leveraged to design and develop COFs for electrochemical energy storage.
UR - http://hdl.handle.net/10754/673294
UR - https://pubs.acs.org/doi/10.1021/jacs.1c09290
U2 - 10.1021/jacs.1c09290
DO - 10.1021/jacs.1c09290
M3 - Article
C2 - 34739750
SN - 0002-7863
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
ER -