Abstract: Novel energy storage technology is increasingly becoming a key technology for building a new type energy system and a new type power system in China,and has become a new driving force for China’s economic development. It will play an important role in promoting the consumption of renewable energy,achieving energy system transformation,improving energy utilization efficiency,reducing environmental pollution,and related technological research is also developing rapidly. A series of review paperwork are conducted,which are divided into three parts:electrochemical energy storage technology,physical energy storage and thermal storage technology,energy storage integration and planning. A comprehensive and systematic comparative analysis is conducted on the application fields,latest research progress,and limitations of various novel energy storage technologies. Furthermore,the challenges and development trends faced by energy storage system related fields such as energy storage integration,security,planning and scheduling are further explored.This paper is the first part of the review work,which focuses on the comprehensive analysis and discussion of the relevant achievements in the technology and engineering of electrochemical energy storage technology,including lithiumion batteries,sodium-ion batteries,flow batteries,solid-state batteries,and aqueous batteries.Electrochemical energy storage technology has the characteristic of flexible configuration,which can meet the application needs of different powers and energies. Lithium-ion battery technology has the highest maturity and occupies a dominant position in the energy storage market. In the future,further development will focus on system integration and safety technology to promote larger scale commercial applications. Other battery technologies that are still in the basic research stage have also shown enormous development potential,such as solid-state batteries with higher safety,sodium-ion batteries with superior low-temperature performance,and flow batteries with longer cycle life.