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5
Layer-Structured Cathode Materials
forEnergy Storage
Bohang Song, Man On Lai and Li Lu
5.1 Introduction
Fossil fuels, hydropower, nuclear ssion and other sources of energy are
deployed to satisfy the needs of modern technologies and benets of every-
one’s daily life. However, irrespective of whatever means are used to pro-
duce energy, energy storage always becomes a signicant issue and presents
a great challenge to scientists and engineers. Therefore, in recent decades,
energy-storage devices that are based on electrochemical principles, such
as batteries and supercapacitors, have been drawing intense interests from
fundamental researc ...