Chemistry & Cell Components

Chemistry & Cell Components

Anode | Overview

Anode | Overview

Common anode materials & performance tradeoffs Graphite

Silicon

LTO

Li Metal

Description

Graphite has been a traditional choice due to its stability, cost-effectiveness, and well-established manufacturing processes

Silicon offers higher energy density than graphite but comes with challenges related to volume expansion.

LTO offers lower energy density but longer cycle life

Lithium metal offers among the highest energy density but comes with challenges related to safety and cycle life, often due to dendrite formation.

Pro

Widely used in lithium-ion batteries, stable, low cost, and exhibits good cycling performance.

High theoretical capacity, leading to higher energy density compared to graphite.

Exceptional cycle life, high rate capability, and excellent safety characteristics.

Highest theoretical capacity, potentially leading to significantly increased energy density.

Con

Limited energy storage capacity, can hinder the development of high-energy-density batteries.

Higher cost than graphite (per kg) and experiences significant volume expansion during charge/discharge cycles, leading to mechanical degradation and reduced cycle life.

Lower energy density compared to graphite and silicon

Prone to dendrite formation during cycling, posing safety risks and reducing cycle life. Ongoing research focuses on addressing these challenges.

Source: Battery Talk: Battery Application Break Down 1/01/2024 (Version 2.0)

Extracted from the PDF; charts and images may read imperfectly.