Hydrogen Isotope Effects on Aqueous Electrolyte for Electrochemical Lithium‐Ion Storage

As two stable hydrogen isotopes, protium and deuterium show magnified isotope effects in physicochemical properties due to the significantly varied atomic masses. In this work, aqueous electrolytes based on heavy water (D2O) and light water (H2O) were prepared to reveal the electrochemical isotope e...

Full description

Saved in:
Bibliographic Details
Published inAngewandte Chemie International Edition Vol. 61; no. 25; pp. e202203137 - n/a
Main Authors Chou, Jia, Zhao, Yao, Li, Xue‐Ting, Wang, Wen‐Peng, Tan, Shuang‐Jie, Wang, Ya‐Hui, Zhang, Juan, Yin, Ya‐Xia, Wang, Fuyi, Xin, Sen, Guo, Yu‐Guo
Format Journal Article
LanguageEnglish
Published Germany Wiley Subscription Services, Inc 20.06.2022
EditionInternational ed. in English
Subjects
Aqueous Electrolyte
Aqueous electrolytes
Deuterium
Deuterium Oxide
Electrochemical Isotope Effects
Electrochemistry
Electrode materials
Heavy water
Hydrogen
Hydrogen Bond
Hydrogen bonds
Hydrogen isotopes
Ion storage
Isotopes
Li-Ion Storage
Light water
Lithium
Lithium-ion batteries
Physicochemical properties
Electrochemical Isotope Effects
Aqueous Electrolyte
Deuterium Oxide
Hydrogen Bond
Li-Ion Storage
Online AccessGet full text

Cover

More Information
Summary:As two stable hydrogen isotopes, protium and deuterium show magnified isotope effects in physicochemical properties due to the significantly varied atomic masses. In this work, aqueous electrolytes based on heavy water (D2O) and light water (H2O) were prepared to reveal the electrochemical isotope effects between the hydrogen isotopes. The covalent hydrogen–oxygen bond and intermolecular hydrogen bond in D2O are much stronger than those in H2O, making them thermodynamically more stable. Compared with the H2O‐based electrolyte, the D2O‐based electrolyte shows a broader electrochemical window, a higher percentage of coordinated water and a longer lifetime of hydrogen bond. Because of the above electrochemical isotope effects, the D2O‐based electrolyte shows high anodic stability against operation of high‐voltage layered oxide cathode materials including LiCoO2 and LiNi0.8Co0.1Mn0.1O2, which enables long cycle life and favorable rate performance of aqueous Li‐ion batteries. The electrochemical isotope effects between heavy water (D2O) and light water (H2O) were revealed to shed light on rational electrolyte design towards the realization of high‐performance aqueous Li‐ion batteries.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
content type line 23
ISSN:1433-7851
1521-3773
1521-3773
DOI:10.1002/anie.202203137