-Sandwich lithium sulfur battery launched

Sandwich lithium sulfur battery launched
author:enerbyte source:本站 click367 Release date: 2023-10-20 09:54:36
abstract:
The lithium batteries that currently dominate the global electric vehicle market cannot meet consumers' requirements for driving over 300 miles on a single charge. Lithium sulfur batteries are an excellent alternative to achieve this goal, but their rapid aging rate makes them unsuitable f...

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The lithium batteries that currently dominate the global electric vehicle market cannot meet consumers' requirements for driving over 300 miles on a single charge. Lithium sulfur batteries are an excellent alternative to achieve this goal, but their rapid aging rate makes them unsuitable for use in vehicles.

The lithium-sulfur graphene oxide battery manufactured by a team led by Elton Cairns, a researcher at the Lawrence Berkeley National Laboratory in the United States, has achieved the goal of driving 300 miles on a single charge. The important advantage of this battery lies in its higher specific energy, which is related to the 200w · h/kg of lithium batteries. This type of lithium sulfur battery can reach 400w · h/kg, with high rate performance, better safety, and low cost.

Lithium sulfur battery is a type of lithium battery that uses sulfur as the positive electrode and metal lithium as the negative electrode. Its specific capacity is up to 1675mah/g, which is much higher than the capacity of commercially widely used cobalt acid lithium batteries. Moreover, sulfur is an environmentally friendly element that has little pollution to the environment, making lithium sulfur batteries a very promising type of lithium battery.

Lithium sulfur batteries use sulfur as the positive reaction material and lithium as the negative electrode. During discharge, the negative electrode reacts with lithium, losing electrons and becoming lithium ions. The positive electrode reacts with sulfur, lithium ions, and electrons to generate sulfides. The potential difference between the positive and negative electrode reactions is the discharge voltage supplied by the lithium-sulfur battery. Under the application of external voltage, the positive and negative reactions of lithium-sulfur batteries reverse, which is the charging process.

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