Anti‐Freezing Strategies of Electrolyte and their Application in Electrochemical Energy Devices

Abstract

Wider scenes of human's activities under low temperature demand promising performance of anti-freezing electrochemical energy devices, and the promotion of performance is mainly limited by electrolyte. However, despite many relevant research works reported, there are still few reviews that systematically and comprehensively summarize these modified approaches and applications. In this focus review, we classify the prominent anti-freezing strategies as high concentration aqueous electrolyte, organic additives, organic electrolyte and others. Relevant research works have been put to clarify their anti-freezing mechanisms and exhibit the modification effects. Besides, various energy devices including metal-air batteries, non-gas batteries and supercapacitors which employed aforementioned strategies are discussed and their key low-temperature performance indexes are summarized to exhibit the advanced research progress. Finally, we put forward some remaining challenges of these modification strategies toward practical application and propose prospects on future development of lowtemperature electrochemical energy devices.

Research progress and perspectives on ultra-low temperature organic batteries

“…In this context, review articles covering low temperature batteries have also begun to appear. [18][19][20][21][22][23] For example, Chen et al 18 and Liu et al 19 summarized the recent progress of electrolyte modication strategies for low-temperature batteries from different perspectives of electrolyte safety, stability and anti-freezing, respectively. Zhao et al 22 reviewed the research progress of modication strategies for aqueous rechargeable metal ion batteries at subzero temperatures.…”

Organic electrochromic energy storage materials and device design

“…Among different kinds of electrochromic materials, Frontiers in Chemistry frontiersin.org organic electrochromic materials are widely used as electrode materials for multifunctional energy storage devices due to their excellent characteristics of easy synthesis, low cost, stable performance, and large color contrast (Zhu et al, 2018). The Zn-based and Al-based energy storage devices can perform electrochemical energy storage conversion in air, and most of the Zn-based and Albased electrolytes are colorless and do not cause color interference (Ji et al, 2020;Liu et al, 2022). Hence, organic electrochromic materials have attracted much attention in Zn-based and Al-based energy storage devices (Huang et al, 2015;Mo et al, 2019;Eh et al, 2021).…”

The Effect of Temperature on the Mechanical Properties of Alginate Gels in Water/Alcohol Solutions

“…A commonly reported strategy for preparing antifreeze hydrogels is to replace water with organic solvents. This lowers the freezing point of the gels and prevents the formation of hydrogen bonds between polymer chains and water [16]. Among organic solvents, alcohol compounds are widely used in industry because of their low cost and easy production.…”