Giant Thermopower of Hydrogen Ion Enhanced by a Strong Hydrogen Bond System

Chen，Qianling; Chen，Bin; Xiao，Songhua; Feng，Jiansong; Yang，Jing; Yue，Quan; Zhang，Xu; Wang，Taihong

2021

10.1021/acsami.1c24698

ACS Applied Materials & Interfaces   影响因子和分区

1944-8244

1944-8252

Ionic thermoelectric materials based on organic polymers are of great significance for low-grade heat harvesting and self-powered wearable temperature sensing. Here, we demonstrate a poly(vinyl alcohol) (PVA) hydrogel that relies on the differential transport of H+ in PVA hydrogels with different degrees of crystallization. After the inorganic acid is infiltrated into the physically cross-linked PVA hydrogel, the ionic conductor exhibits a huge ionic thermopower of 38.20 mV K-1, which is more than twice the highest value reported for hydrogen ion transport thermoelectric materials. We attribute the enhanced thermally generated voltage to the movement of H+ in the strong hydrogen bond system of PVA hydrogels and the restrictive effect of the strong hydrogen bond system on anions. This ionic thermoelectric hydrogel opens up a new way for thermoelectric conversion devices using H+ as an energy carrier.

energy harvesting giant thermopower ionic thermoelectric capacitors strong hydrogen bond system

SCI ; EI

英语

第一 ; 通讯

Guangdong Major Scientific Research Project[2018KZDXM061] ; China Postdoctoral Science Foundation[2019M662196]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000812997800001

AMER CHEMICAL SOC

20221812064237

Hydrogels ; Hydrogen bonds ; Ions ; Polyvinyl alcohols ; Thermoelectric equipment ; Thermoelectric power

Energy Conversion Issues:525.5 ; Thermoelectric Energy:615.4 ; Colloid Chemistry:801.3 ; Physical Chemistry:801.4 ; Chemical Products Generally:804 ; Organic Polymers:815.1.1

2-s2.0-85129264141

Scopus

Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China

Chen，Qianling,Chen，Bin,Xiao，Songhua,et al. Giant Thermopower of Hydrogen Ion Enhanced by a Strong Hydrogen Bond System[J]. ACS Applied Materials & Interfaces,2021,14(17):19304-19314.

Chen，Qianling.,Chen，Bin.,Xiao，Songhua.,Feng，Jiansong.,Yang，Jing.,...&Wang，Taihong.(2021).Giant Thermopower of Hydrogen Ion Enhanced by a Strong Hydrogen Bond System.ACS Applied Materials & Interfaces,14(17),19304-19314.

Chen，Qianling,et al."Giant Thermopower of Hydrogen Ion Enhanced by a Strong Hydrogen Bond System".ACS Applied Materials & Interfaces 14.17(2021):19304-19314.