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Title: Hydrogen-Bonding Interactions in Hybrid Aqueous/Nonaqueous Electrolytes Enable Low-Cost and Long-Lifespan Sodium-Ion Storage

Abstract

Although “water-in-salt” electrolytes have opened a new pathway to expand the electrochemical stability window of aqueous electrolytes, the electrode instability and irreversible proton co-insertion caused by aqueous media still hinder the practical application, even when using exotic fluorinated salts. In this study, an accessible hybrid electrolyte class based on common sodium salts is proposed, and crucially an ethanol-rich media is introduced to achieve highly stable Na-ion electrochemistry. Here, ethanol exerts a strong hydrogen-bonding effect on water, simultaneously expanding the electrochemical stability window of the hybridized electrolyte to 2.5 V, restricting degradation activities, reducing transition metal dissolution from the cathode material, and improving electrolyte–electrode wettability. The binary ethanol–water solvent enables the impressive cycling of sodium-ion batteries based on perchlorate, chloride, and acetate electrolyte salts. Notably, a Na 0.44MnO 2 electrode exhibits both high capacity (81 mAh g –1) and a remarkably long cycle life >1000 cycles at 100 mA g –1 (a capacity decay rate per cycle of 0.024%) in a 1 M sodium acetate system. The Na 0.44MnO 2/Zn full cells also show excellent cycling stability and rate capability in a wide temperature range. The gained understanding of the hydrogen-bonding interactions in the hybridized electrolyte can provide new battery chemistrymore » guidelines in designing promising candidates for developing low-cost and long-lifespan batteries based on other (Li +, K +, Zn 2+, Mg 2+, and Al 3+) systems.« less

Authors:
 [1]; ORCiD logo [1];  [1];  [1];  [2]; ORCiD logo [1];  [1];  [1];  [1];  [1];  [3];  [4];  [1]
  1. Nanyang Technological Univ. (Singapore)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Synchrotron Light Research Inst., Nakhon Ratchasima (Thailand)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1635479
Report Number(s):
BNL-216101-2020-JAAM
Journal ID: ISSN 1944-8244
Grant/Contract Number:  
SC0012704
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
ACS Applied Materials and Interfaces
Additional Journal Information:
Journal Volume: 12; Journal Issue: 20; Journal ID: ISSN 1944-8244
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Chua, Rodney, Cai, Yi, Lim, Pei Qi, Kumar, Sonal, Satish, Rohit, Manalastas, William, Ren, Hao, Verma, Vivek, Meng, Shize, Morris, Samuel A., Kidkhunthod, Pinit, Bai, Jianming, and Srinivasan, Madhavi. Hydrogen-Bonding Interactions in Hybrid Aqueous/Nonaqueous Electrolytes Enable Low-Cost and Long-Lifespan Sodium-Ion Storage. United States: N. p., 2020. Web. doi:10.1021/acsami.0c03423.
Chua, Rodney, Cai, Yi, Lim, Pei Qi, Kumar, Sonal, Satish, Rohit, Manalastas, William, Ren, Hao, Verma, Vivek, Meng, Shize, Morris, Samuel A., Kidkhunthod, Pinit, Bai, Jianming, & Srinivasan, Madhavi. Hydrogen-Bonding Interactions in Hybrid Aqueous/Nonaqueous Electrolytes Enable Low-Cost and Long-Lifespan Sodium-Ion Storage. United States. doi:10.1021/acsami.0c03423.
Chua, Rodney, Cai, Yi, Lim, Pei Qi, Kumar, Sonal, Satish, Rohit, Manalastas, William, Ren, Hao, Verma, Vivek, Meng, Shize, Morris, Samuel A., Kidkhunthod, Pinit, Bai, Jianming, and Srinivasan, Madhavi. Tue . "Hydrogen-Bonding Interactions in Hybrid Aqueous/Nonaqueous Electrolytes Enable Low-Cost and Long-Lifespan Sodium-Ion Storage". United States. doi:10.1021/acsami.0c03423.
@article{osti_1635479,
title = {Hydrogen-Bonding Interactions in Hybrid Aqueous/Nonaqueous Electrolytes Enable Low-Cost and Long-Lifespan Sodium-Ion Storage},
author = {Chua, Rodney and Cai, Yi and Lim, Pei Qi and Kumar, Sonal and Satish, Rohit and Manalastas, William and Ren, Hao and Verma, Vivek and Meng, Shize and Morris, Samuel A. and Kidkhunthod, Pinit and Bai, Jianming and Srinivasan, Madhavi},
abstractNote = {Although “water-in-salt” electrolytes have opened a new pathway to expand the electrochemical stability window of aqueous electrolytes, the electrode instability and irreversible proton co-insertion caused by aqueous media still hinder the practical application, even when using exotic fluorinated salts. In this study, an accessible hybrid electrolyte class based on common sodium salts is proposed, and crucially an ethanol-rich media is introduced to achieve highly stable Na-ion electrochemistry. Here, ethanol exerts a strong hydrogen-bonding effect on water, simultaneously expanding the electrochemical stability window of the hybridized electrolyte to 2.5 V, restricting degradation activities, reducing transition metal dissolution from the cathode material, and improving electrolyte–electrode wettability. The binary ethanol–water solvent enables the impressive cycling of sodium-ion batteries based on perchlorate, chloride, and acetate electrolyte salts. Notably, a Na0.44MnO2 electrode exhibits both high capacity (81 mAh g–1) and a remarkably long cycle life >1000 cycles at 100 mA g–1 (a capacity decay rate per cycle of 0.024%) in a 1 M sodium acetate system. The Na0.44MnO2/Zn full cells also show excellent cycling stability and rate capability in a wide temperature range. The gained understanding of the hydrogen-bonding interactions in the hybridized electrolyte can provide new battery chemistry guidelines in designing promising candidates for developing low-cost and long-lifespan batteries based on other (Li+, K+, Zn2+, Mg2+, and Al3+) systems.},
doi = {10.1021/acsami.0c03423},
journal = {ACS Applied Materials and Interfaces},
issn = {1944-8244},
number = 20,
volume = 12,
place = {United States},
year = {2020},
month = {4}
}

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