Ultrafast cation insertion-selected zinc hexacyanoferrate for 1.9 V K–Zn hybrid aqueous batteries

2020 ◽  
Vol 8 (14) ◽  
pp. 6631-6637 ◽  
Author(s):  
Meng Huang ◽  
Jiashen Meng ◽  
Zijian Huang ◽  
Xuanpeng Wang ◽  
Liqiang Mai
Keyword(s):  
Aqueous Battery ◽  
Zinc Hexacyanoferrate ◽  
Aqueous Batteries

The ZnHCF//Zn hybrid aqueous battery with selected K+ insertion/extraction shows a discharge plateau of 1.937 V at 2C.

scholarly journals A four-electron Zn-I2 aqueous battery enabled by reversible I−/I2/I+ conversion

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yiping Zou ◽  
Tingting Liu ◽  
Qijun Du ◽  
Yingying Li ◽  
Haibo Yi ◽  
...  
Keyword(s):  
Aqueous Electrolyte ◽  
Chloride Ions ◽  
Experimental Characterization ◽  
Redox Couples ◽  
Free Chloride ◽  
Reversible Redox ◽  
Aqueous Battery ◽  
Storage Batteries ◽  
Aqueous Batteries ◽  
Superior Level

AbstractElectrochemically reversible redox couples that embrace more electron transfer at a higher potential are the eternal target for energy storage batteries. Here, we report a four-electron aqueous zinc-iodine battery by activating the highly reversible I2/I+ couple (1.83 V vs. Zn/Zn2+) in addition to the typical I−/I2 couple (1.29 V). This is achieved by intensive solvation of the aqueous electrolyte to yield ICl inter-halogens and to suspend its hydrolysis. Experimental characterization and modelling reveal that limited water activity and sufficient free chloride ions in the electrolyte are crucial for the four-electron process. The merits of the electrolyte also afford to stabilize Zn anode, leading to a reliable Zn-I2 aqueous battery of 6000 cycles. Owing to high operational voltage and capacity, energy density up to 750 Wh kg−1 based on iodine mass was achieved (15–20 wt% iodine in electrode). It pushes the Zn-I2 battery to a superior level among these available aqueous batteries.

One-step synthesis of flower-like Bi2O3/Bi2Se3 nanoarchitectures and NiCoSe2/Ni0.85Se nanoparticles with appealing rate capability for the construction of high-energy and long-cycle-life asymmetric aqueous batteries

2019 ◽  
Vol 7 (29) ◽  
pp. 17613-17625 ◽  
Author(s):  
Alan Meng ◽  
Xiangcheng Yuan ◽  
Tong Shen ◽  
Zhenjiang Li ◽  
Qingyan Jiang ◽  
...  
Keyword(s):  
Energy Density ◽  
Rate Capability ◽  
High Energy ◽  
High Energy Density ◽  
Positive Electrodes ◽  
Long Cycle Life ◽  
Aqueous Battery ◽  
Se Nanoparticles ◽  
One Step ◽  
Aqueous Batteries

The Bi2O3/Bi2Se3 nanoflowers and NiCoSe2/Ni0.85Se nanoparticles are acted as negative and positive electrodes for constructing an asymmetric aqueous battery successfully, and the device present high energy density and outstanding cycling stability.

scholarly journals Systems-level investigation of aqueous batteries for understanding the benefit of water-in-salt electrolyte by synchrotron nanoimaging

2020 ◽  
Vol 6 (10) ◽  
pp. eaay7129 ◽  
Author(s):  
Cheng-Hung Lin ◽  
Ke Sun ◽  
Mingyuan Ge ◽  
Lisa M. Housel ◽  
Alison H. McCarthy ◽  
...  
Keyword(s):  
Environmental Sustainability ◽  
Three Dimensional ◽  
Mechanical Damage ◽  
Operating Voltage ◽  
Li Ion Batteries ◽  
X Ray ◽  
Aqueous Battery ◽  
Li Ion ◽  
X Ray Absorption ◽  
Aqueous Batteries

Water-in-salt (WIS) electrolytes provide a promising path toward aqueous battery systems with enlarged operating voltage windows for better safety and environmental sustainability. In this work, a new electrode couple, LiV3O8-LiMn2O4, for aqueous Li-ion batteries is investigated to understand the mechanism by which the WIS electrolyte improves the cycling stability at an extended voltage window. Operando synchrotron transmission x-ray microscopy on the LiMn2O4 cathode reveals that the WIS electrolyte suppresses the mechanical damage to the electrode network and dissolution of the electrode particles, in addition to delaying the water decomposition process. Because the viscosity of WIS is notably higher, the reaction heterogeneity of the electrodes is quantified with x-ray absorption spectroscopic imaging, visualizing the kinetic limitations of the WIS electrolyte. This work furthers the mechanistic understanding of electrode–WIS electrolyte interactions and paves the way to explore the strategy to mitigate their possible kinetic limitations in three-dimensional architectures.

scholarly journals Manipulating Electrocatalytic Reaction and Ion Intercalation to Improve Aqueous Batteries

2021 ◽  
Author(s):  
Yuxin Zhang ◽  
Chunguang Kuai ◽  
Anyang Hu ◽  
Ma Lu ◽  
Sha Tan ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Electrochemical Activation ◽  
Water Decomposition ◽  
Full Cell ◽  
Cell Capacity ◽  
Aqueous Battery ◽  
Ion Intercalation ◽  
Aqueous Batteries ◽  
Electrocatalytic Reaction

We report that electrocatalytic water decomposition can be leveraged to enhance the performance of aqueous batteries. Using the NaxFe[Fe(CN)<sub>6</sub>]ǁNaTi<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> aqueous battery as a platform, we demonstrate that electrocatalytic water oxidation can serve as an electrochemical activation approach to achieving higher full cell capacity. <br>

scholarly journals Manipulating Electrocatalytic Reaction and Ion Intercalation to Improve Aqueous Batteries

2021 ◽  
Author(s):  
Yuxin Zhang ◽  
Chunguang Kuai ◽  
Anyang Hu ◽  
Ma Lu ◽  
Sha Tan ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Electrochemical Activation ◽  
Water Decomposition ◽  
Full Cell ◽  
Cell Capacity ◽  
Aqueous Battery ◽  
Ion Intercalation ◽  
Aqueous Batteries ◽  
Electrocatalytic Reaction

We report that electrocatalytic water decomposition can be leveraged to enhance the performance of aqueous batteries. Using the NaxFe[Fe(CN)<sub>6</sub>]ǁNaTi<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> aqueous battery as a platform, we demonstrate that electrocatalytic water oxidation can serve as an electrochemical activation approach to achieving higher full cell capacity. <br>

An All-Organic Aqueous Battery Powered by Adsorbed Quinone

2019 ◽  
Vol 11 (26) ◽  
pp. 23222-23228 ◽  
Author(s):  
Yuan Xu ◽  
Yiting Zheng ◽  
Congcheng Wang ◽  
Qing Chen
Keyword(s):  
Aqueous Battery

Self-discharge in Li-ion aqueous batteries: A case study on LiMn2O4

2021 ◽  
Vol 373 ◽  
pp. 137847
Author(s):  
R. Trócoli ◽  
A. Morata ◽  
C Erinmwingbovo ◽  
F. La Mantia ◽  
A. Tarancón
Keyword(s):  
Li Ion ◽  
Aqueous Batteries

Hollow-porous nanospheres of ZnMn2O4 spinel: A high energy density cathode for rechargeable aqueous battery

2021 ◽  
Vol 263 ◽  
pp. 124373
Author(s):  
Atin Pramanik ◽  
Shreyasi Chattopadhyay ◽  
Sandipan Maiti ◽  
Goutam De ◽  
Sourindra Mahanty
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Aqueous Battery
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