Related Experiment Video
Updated: Aug 15, 2025
06:58
Zinc-Sponge Battery Electrodes that Suppress Dendrites
Published on: September 29, 2020
4.4K
A Double-Functional Additive Containing Nucleophilic Groups for High-Performance Zn-Ion Batteries
Jiandong Wan1, Rui Wang1, Zixiang Liu1
1Institutes of Physical Science and Information Technology, Leibniz Joint Research Center of Materials Sciences, Engineering Laboratory of High-Performance Waterborne Polymer Materials of Anhui Province, Anhui Graphene Engineering Laboratory, Key Laboratory of Structure and Functional Regulation of Hybrid Material (Ministry of Education), Anhui University, Hefei 230601, People's Republic of China.
ACS Nano
|January 3, 2023
Summary
Sodium tartrate additive enhances aqueous zinc-ion batteries by promoting uniform zinc deposition and suppressing dendrites. This improves cycling stability in both Zn|Zn and Zn||MnO2 cells.
Area of Science:
- Electrochemistry
- Materials Science
Background:
- Aqueous zinc-ion batteries (AZIBs) offer a low-cost, eco-friendly alternative to conventional batteries.
- Commercialization of AZIBs is hindered by zinc dendrite growth and detrimental side reactions.
Purpose of the Study:
- To investigate sodium tartrate (TA-Na) as a dual-functional electrolyte additive for AZIBs.
- To enhance the reversibility and electrochemical performance of AZIBs.
Main Methods:
- Utilized sodium tartrate as an electrolyte additive in AZIBs.
- Investigated the mechanism of tartrate anion adsorption and coordination with Zn2+ ions.
- Evaluated the electrochemical performance of Zn|Zn symmetric cells and Zn||MnO2 full cells.
Main Results:
- Tartrate anions preferentially adsorb on the Zn surface, promoting uniform Zn deposition on the (002) plane.
- The additive effectively inhibits side reactions and dendrite formation.
- Zn|Zn cells demonstrated over 1500 cycles at 0.5 mA cm-2.
- Zn||MnO2 full cells achieved 1000 cycles at 1 A g-1 under practical conditions.
Conclusions:
- Sodium tartrate is a highly effective dual-functional additive for improving AZIB performance.
- The additive facilitates reversible zinc deposition and suppresses dendrite growth, enhancing battery longevity.
- TA-Na additive shows great promise for the practical application of AZIBs.
Related Concept Videos
02:51Metal-Ligand Bonds
21.3K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
21.3K
01:26EDTA: Auxiliary Complexing Reagents
648
EDTA titrations are usually carried out in highly basic conditions, where the fully deprotonated form of EDTA, Y4−, actively complexes with the free metal ions in the solution. Several metal ions precipitate as hydrous oxide (hydroxides, oxides, or oxyhydroxides) under these conditions, lowering the concentration of free metal ions in the solution. For this reason, auxiliary complexing agents or ligands such as ammonia, tartrate, citrate, or triethanolamine are used in EDTA titrations to...
648
03:12Batteries and Fuel Cells
27.8K
A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
27.8K
01:19Diazonium Group Substitution: –OH and –H
2.9K
Nitrous acid, a weak acid, is prepared in situ via the reaction of sodium nitrite with a strong acid under cold conditions. This nitrous acid prepared in situ reacts with primary arylamines to form arenediazonium salts. Such reactions are known as diazotization reactions. As shown in Figure 1, the formation of arenediazonium salts begins with the decomposition of nitrous acid in an acidic solution to give nitrosonium ions.
2.9K
00:56Extraction: Advanced Methods
506
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
506
01:20Anionic Chain-Growth Polymerization: Overview
2.1K
The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
2.1K