In Situ Electrochemical Transformation Reaction of Ammonium-Anchored Heptavanadate Cathode for Long-Life Aqueous Zinc-Ion Batteries

2021 ◽  
Vol 13 (4) ◽  
pp. 5034-5043
Author(s):  
Wentao Dong ◽  
Min Du ◽  
Feng Zhang ◽  
Xiaofei Zhang ◽  
Zhenyu Miao ◽  
...  
Keyword(s):  
Zinc Ion ◽  
Transformation Reaction ◽  
Long Life

Cyano-reinforced in-situ polymer electrolyte enabling long-life cycling for high-voltage lithium metal batteries

2021 ◽  
Vol 37 ◽  
pp. 215-223
Author(s):  
Zhaolin Lv ◽  
Qian Zhou ◽  
Shu Zhang ◽  
Shanmu Dong ◽  
Qinglei Wang ◽  
...  
Keyword(s):  
Polymer Electrolyte ◽  
High Voltage ◽  
Lithium Metal ◽  
Lithium Metal Batteries ◽  
Long Life

Oxygen Defects Engineering of VO 2 · x H 2 O Nanosheets via In Situ Polypyrrole Polymerization for Efficient Aqueous Zinc Ion Storage

2021 ◽  
pp. 2103070
Author(s):  
Zhengchunyu Zhang ◽  
Baojuan Xi ◽  
Xiao Wang ◽  
Xiaojian Ma ◽  
Weihua Chen ◽  
...  
Keyword(s):  
Zinc Ion ◽  
Oxygen Defects ◽  
Ion Storage

scholarly journals Oxygen-Deficient β-MnO2@Graphene Oxide Cathode for High-Rate and Long-Life Aqueous Zinc Ion Batteries

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Shouxiang Ding ◽  
Mingzheng Zhang ◽  
Runzhi Qin ◽  
Jianjun Fang ◽  
Hengyu Ren ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Manganese Oxides ◽  
Rate Capability ◽  
High Energy ◽  
Zinc Ion ◽  
Cycling Stability ◽  
High Rate ◽  
High Energy Density ◽  
Superior Performance ◽  
Long Life

AbstractRecent years have witnessed a booming interest in grid-scale electrochemical energy storage, where much attention has been paid to the aqueous zinc ion batteries (AZIBs). Among various cathode materials for AZIBs, manganese oxides have risen to prominence due to their high energy density and low cost. However, sluggish reaction kinetics and poor cycling stability dictate against their practical application. Herein, we demonstrate the combined use of defect engineering and interfacial optimization that can simultaneously promote rate capability and cycling stability of MnO2 cathodes. β-MnO2 with abundant oxygen vacancies (VO) and graphene oxide (GO) wrapping is synthesized, in which VO in the bulk accelerate the charge/discharge kinetics while GO on the surfaces inhibits the Mn dissolution. This electrode shows a sustained reversible capacity of ~ 129.6 mAh g−1 even after 2000 cycles at a current rate of 4C, outperforming the state-of-the-art MnO2-based cathodes. The superior performance can be rationalized by the direct interaction between surface VO and the GO coating layer, as well as the regulation of structural evolution of β-MnO2 during cycling. The combinatorial design scheme in this work offers a practical pathway for obtaining high-rate and long-life cathodes for AZIBs.

Electrochemically induced structural reconstruction in promoting Zn storage performances of CaMn3O6 cathode for superior long life aqueous Zn-ion battery

2021 ◽  
Author(s):  
peisheng guo ◽  
gongzheng yang ◽  
Chengxin Wang
Keyword(s):  
Energy Storage ◽  
Large Scale ◽  
Storage Systems ◽  
Low Cost ◽  
Zinc Ion ◽  
Manufacturing Processes ◽  
Energy Storage Systems ◽  
Long Life

Aqueous zinc-ion batteries (AZIBs) have been regarded as alternative and promising large-scale energy storage systems due to their low cost, convenient manufacturing processes, and high safety. However, their development was...

A 3D mixed ion/electron conducting scaffold by in-situ conversion for long-life lithium metal anodes

Nanoscale ◽  
2021 ◽  
Author(s):  
Huai Jiang ◽  
Qingyuan Dong ◽  
Maohui Bai ◽  
Furong Qin ◽  
Maoyi Yi ◽  
...  
Keyword(s):  
Anode Material ◽  
Volume Change ◽  
Specific Energy ◽  
Dendrite Growth ◽  
Commercial Application ◽  
Lithium Metal ◽  
Lithium Metal Anodes ◽  
Long Life ◽  
Metal Anodes

Lithium (Li) metal is widely considered as the most promising anode material because of ultrahigh specific energy. However, obvious volume change and uncontrollable dendrite growth hinder its commercial application. Herein,...

scholarly journals A novel zinc complex with antibacterial and antioxidant activity

BMC Chemistry ◽  
2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Yun Zhang ◽  
Xiaojing Li ◽  
Jia Li ◽  
Md. Zaved Hossain Khan ◽  
Fanyi Ma ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Acute Toxicity ◽  
Intestinal Absorption ◽  
Antioxidant Activities ◽  
Zinc Ion ◽  
Water Soluble ◽  
Zinc Supplement ◽  
Citrate Complex ◽  
Morphology Characterization

Abstract Background In order to enhance the antibacterial activity and reduce the toxicity of Zn2+, novel complexes of Zn(II) were synthesized. Results A water-soluble zinc-glucose-citrate complex (ZnGC) with antibacterial activity was synthesized at pH 6.5. The structure, morphology, characterization, acute toxicity, antibacterial and antioxidant activities, and in situ intestinal absorption were investigated. The results showed that zinc ion was linked with citrate by coordinate bond while the glucose was linked with it through intermolecular hydrogen bonding. The higher the molecular weight of sugar is, the more favorable it is to inhibit the formation of zinc citrate precipitation. Compared with ZnCl2, ZnGC complex presented better antibacterial activity against Staphylococcus aureus (S. aureus, Gram-positive) and Escherichia coli (E. coli, Gram-negative). Conclusions The results of acute toxicity showed no obvious toxicity in this test and in situ intestinal absorption study, suggesting that ZnGC complex could be used as a potential zinc supplement for zinc deficiency.

scholarly journals Manganese hexacyanoferrate reinforced by PEDOT coating towards high-rate and long-life sodium-ion battery cathode

2020 ◽  
Vol 8 (6) ◽  
pp. 3222-3227 ◽  
Author(s):  
Xiao Wang ◽  
Baoqi Wang ◽  
Yuxin Tang ◽  
Ben Bin Xu ◽  
Chu Liang ◽  
...  
Keyword(s):  
Phase Transition ◽  
Sodium Ion ◽  
High Rate ◽  
Sodium Ion Battery ◽  
Long Life

In situ polymerization is used to obtain PEDOT tightly coated MnHCF, inhibiting phase transition and Mn dissolution during cycling.

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