TY - JOUR
T1 - An advanced PVA-based hydrogel flexible electrolyte material with high anti-dehydration and electrochemistry performance
AU - Liu, Qingye
AU - Wang, Chenghua
AU - Zou, Chang
AU - Li, Jiangtao
AU - Liu, Jun
AU - Liu, Yilun
AU - Sun, Xueyan
AU - Zhao, Wei
N1 - Publisher Copyright:
© The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2025.
PY - 2025/5
Y1 - 2025/5
N2 - Polyvinyl alcohol (PVA) hydrogel as a hydrogel electrolyte faces issues such as fracture, dehydration, and poor conductivity, limiting its application in flexible zinc-air batteries. To address these, we propose a triethanolamine (TEA)-modified PVA-based hydrogel material (TPVA). TEA promoted formation of a uniform mesoporous structure and enables TPVA hydrogel to exhibit excellent mechanical properties, with an elongation at break (425%) approximately twice that of PVA (230%). Additionally, TPVA material retains excellent hydration after 120 h, demonstrating a significant enhancement in water retention. TPVA-based ZABs achieved a power density of 46.1 mW cm−3, which is 3.1 times enhancement than that of PVA-based (14.9 mW cm−3), and demonstrated significantly extended cycling stability, maintaining stable charge–discharge operation for 35.7 h, outperforming PVA system (11.5 h). Dynamic simulation revealed TEA-PVA interactions, with TPVA showing denser hydrogen bond networks and lower potential energy. This work proposes a promising approach to enhance PVA hydrogel electrolytes for flexible ZABs.
AB - Polyvinyl alcohol (PVA) hydrogel as a hydrogel electrolyte faces issues such as fracture, dehydration, and poor conductivity, limiting its application in flexible zinc-air batteries. To address these, we propose a triethanolamine (TEA)-modified PVA-based hydrogel material (TPVA). TEA promoted formation of a uniform mesoporous structure and enables TPVA hydrogel to exhibit excellent mechanical properties, with an elongation at break (425%) approximately twice that of PVA (230%). Additionally, TPVA material retains excellent hydration after 120 h, demonstrating a significant enhancement in water retention. TPVA-based ZABs achieved a power density of 46.1 mW cm−3, which is 3.1 times enhancement than that of PVA-based (14.9 mW cm−3), and demonstrated significantly extended cycling stability, maintaining stable charge–discharge operation for 35.7 h, outperforming PVA system (11.5 h). Dynamic simulation revealed TEA-PVA interactions, with TPVA showing denser hydrogen bond networks and lower potential energy. This work proposes a promising approach to enhance PVA hydrogel electrolytes for flexible ZABs.
UR - https://www.scopus.com/pages/publications/105005805339
U2 - 10.1007/s10853-025-10933-3
DO - 10.1007/s10853-025-10933-3
M3 - 文章
AN - SCOPUS:105005805339
SN - 0022-2461
VL - 60
SP - 8488
EP - 8502
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 20
ER -