An anti-aging polymer electrolyte for flexible rechargeable zinc-ion batteries

Abstract

Polymer electrolytes have been extensively applied for zinc-ion batteries, especially those based on hydrogels; however, the densification of the hydrogel electrolytes during cycling affects the durability, resulting in capacity attenuation....

Regulating Oxygen Substituents with Optimized Redox Activity in Chemically Reduced Graphene Oxide for Aqueous Zn‐Ion Hybrid Capacitor

“…[ 17–22 ] Zn‐ion hybrid capacitor (ZHC), has emerged as an attractive power supply system, which integrated the advantageous characteristics of supercapacitors and batteries. [ 23–29 ] It commonly consisted of a Zn metal as anode and a capacitive/pseudocapacitive electrode as cathode in a aqueous Zn‐ion electrolyte. The fast Zn plating/stripping kinetics of Zn anode together with these remarkable merits attract increasing research efforts in developing ZHC with high capacity and extreme stability.…”

Materials and Structure Design for Solid-State Zinc-Ion Batteries: A Mini-Review

“…Organic solvents have helped address these challenges, retaining interfacial contact and minimizing evaporation and side reactions, contributing to dendrite suppression and improved Coulombic efficiency . For example, a PEGDGE/ Zn(CF 3 SO 3 ) 2 SSE using a PC plasticizer addressed evaporation and obtained an ionic conductivity of 0.377 mS cm −1 while maintaining constant surface resistance for over 200 h (Dong et al, 2020). The latest research implements ionic liquids in place of traditional plasticizers, increasing the quantity of ions within the electrolyte (Liu et al, 2020a;Ma L et al, 2020).…”

“…With the advancement in polymer electrolytes and cathodes, SSZIBs with different configurations have been demonstrated, including traditional planar (Li et al, 2018a;Wan et al, 2018;Wang D H et al, 2018;Zhang N et al, 2019;Mo et al, 2019;Zeng et al, 2019;Chen Y et al, 2020;Ma L et al, 2020;Zhao Y et al, 2020;Dong et al, 2020;Li et al, 2020;Xiao et al, 2020), deformable planar (Wang M et al, 2019), flexible coaxial (Wan et al, 2018;Zhang Q C et al, 2019;Zhao Y et al, 2020), and twisted-pair (He et al, 2019b) or parallel-pair fiber arrangements (Wang K et al, 2018). The key battery components and performance of these SSZIBs are compared in Table 1, and representative examples are illustrated in Figure 1 and discussed below.…”

“…3D-substrate-supported Zn anodes not only provide the flexibility required for flexible SSZIBs but also reduce Zn passivation and dendrite formation while improving the depth of discharge and cycling life (Parker et al, 2017). The cathodes for SSZIBs explored to date include traditional inorganic materials (MnO 2 (Li et al, 2018a;Wang D H et al, 2018;Wang K et al, 2018;Wang M et al, 2019;Dong et al, 2020;Xiao et al, 2020), V 2 O 5 , zinc orthovanadate (ZOV) (Chao et al, 2018), zinc hexacyanoferrate (ZnHCF) (Chen Z et al, 2020;Zhang Q C et al, 2019)), organic materials (polyaniline (Xiao et al, 2020)), and novel metal-organic frameworks (MOF, vanadium-based MIL-47 (He et al, 2019a)). Similar to the anode, these cathode materials were also prepared on various 3D substrates to provide the structural flexibility and high rate capability needed for SSZIBs.…”

Cathode Design for Aqueous Rechargeable Multivalent Ion Batteries: Challenges and Opportunities

“…[ 1–3 ] However, these energy sources, such as wind, tidal, solar and geothermal, are discontinuous and irregular by nature; therefore, grid‐scale energy storage solutions are required to underpin the continued growth of the renewable energy sector; advanced batteries are one option for achieving this. [ 4–6 ] Since the successful commercialization of lithium‐ion batteries (LIBs) by Sony in the 1990s, the past three decades have witnessed the widespread use of LIBs in many fields, from mobile electronic devices and electric vehicles to grid‐scale energy storage systems. [ 7–10 ] Nevertheless, different from the small and medium‐sized energy storage applications, the grid‐scale energy storage market has been identified as a highly cost‐sensitive battlefield with a rigorous security requirement.…”