X.Y. Shi, P. Das, Z.-S. Wu*

ACS Energy Letters, 2022, 7, 267-281.

DOI: 10.1021/acsenergylett.1c01854 [PDF]

Following the evolving digital era represented by 5G and Internet of Things technologies, microscale electronicterminals will enterevery aspects of our daily lives. Meanwhile, they put forward all-around digital requirements for microscale electrochemical energy storage devices (MEESDs) including customizable implementation and precise description, to accurately match these terminals in various scenarios. In this review, we summarize the current status and latest progress of MEESDs from diverse aspects of key materials, device structures, fabrication process, functional properties and system integration in detail. On basis of this, existing challenges and future research directions of MEESDs including evaluation standards, analysis methods and machine learning are discussed in brief, through which we can expect to accelerate the development of digital MEESDs asunderlying energy foundation for the fully connected and intelligent world.