Related Experiment Video
Updated: Aug 19, 2025
11:25
In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries
Published on: November 10, 2014
15.9K
Porous Metal Current Collectors for Alkali Metal Batteries
Jianyu Chen1, Yizhou Wang2, Sijia Li1
1State Key Laboratory of Organic Electronics and Information Displays (KLOEID) and Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, 210023, China.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|November 27, 2022
Summary
Porous metal current collectors (PMCCs) enable dendrite-free alkali metal anodes (Li, Na, K) for high-energy batteries. This review details PMCC strategies for improved safety and performance in next-generation batteries.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Alkali metals (Li, Na, K) offer high energy density but suffer from dendrite growth, hindering battery safety and commercialization.
- Porous metal current collectors (PMCCs) provide a promising strategy to accommodate alkali metals, mitigating dendrite formation and improving anode stability.
Purpose of the Study:
- To systematically survey advanced PMCCs for Li, Na, and K alkali metal anodes.
- To summarize methodologies for controlling PMCC properties (pore structure, surface area, wettability, mechanical properties).
- To discuss current challenges and future prospects of PMCCs in alkali metal batteries.
Main Methods:
- Review of existing literature on PMCCs for alkali metal anodes.
- Analysis of development timelines, categories, fabrication methods, and working mechanisms of PMCCs.
- Summary of advances in controlling PMCC characteristics.
Main Results:
- PMCCs effectively address dendrite growth and uneven ion distribution in alkali metal anodes.
- Methodologies for tailoring PMCCs' physical and chemical properties are crucial for performance enhancement.
- Significant progress has been made in developing PMCCs for dendrite-free alkali metal batteries.
Conclusions:
- PMCCs are essential for realizing safe and high-performance alkali metal batteries.
- Further research into optimizing PMCCs is needed to overcome existing challenges and unlock their full potential.
- PMCCs represent a key technology for the advancement of next-generation energy storage solutions.
Related Concept Videos
03:12Batteries and Fuel Cells
27.9K
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...
27.9K
03:06Alkali Metals
19.7K
Group 1 elements are soft and shiny metallic solids. They are malleable, ductile, and good conductors of heat and electricity. The melting points of the alkali metals are unusually low for metals and decrease going down the group, while the density increases going down the group with the exception of potassium (Table 1).
Table 1: Properties of the alkali metals
Table 1: Properties of the alkali metals
19.7K
01:21DC Battery
844
A conductor needs to be a component of a path that creates a closed loop or full circuit to have a continuous current flowing through it. A current starts to flow if an electric field is created inside an isolated conductor that is not part of a full circuit. The conductor quickly develops a net positive charge at one end and a net negative charge at the other. These charges generate an electric field opposite the direction of the applied electric field, which reduces the current. Eventually,...
844
01:27Controlled-Current Coulometry: Overview
281
Controlled current coulometry, also known as amperostatic coulometry, is a technique used in electrochemical analysis to measure the quantity of a substance through the controlled passage of current. It involves the application of a constant current to an electrochemical cell containing the analyte of interest. As the current flows through the cell, the analyte undergoes a redox reaction at the electrode surface, resulting in a charge transfer. By monitoring the time required for a certain...
281
01:25Eddy Currents
1.7K
Since eddy currents occur only in conductors, magnets can separate metals from other materials. For example, in a recycling center, trash is dumped in batches down a ramp, beneath which lies a powerful magnet. Conductors in the trash are slowed by eddy currents, while nonmetals in the trash move on, separating from the metals. This works for all metals, not just ferromagnetic ones.
Other major applications of eddy currents appear in metal detectors and the braking systems of trains and roller...
Other major applications of eddy currents appear in metal detectors and the braking systems of trains and roller...
1.7K
01:17Controlled-Potential Coulometry: Electrolytic Methods
238
Controlled-potential coulometry, also known as potentiostatic coulometry, employs a three-electrode system in which the working electrode's potential is precisely regulated using a potentiostat. Platinum working electrodes are utilized for positive potentials, while mercury pool electrodes are favored for extremely negative potentials. The platinum counter electrode is separated from the analyte using a membrane or salt bridge to avoid interference in the analysis.
The chosen potential...
The chosen potential...
238