Multilayer Electrode Strategy Shorten Thermal Charging Time and Boost Energy Output in Gelatin-Based i-TE Cells

Li, Yuchen1; Wang, Shuaihua1; Yu, Mao1; Li, Huan1; Li, Benben1; Zhu, Kang1; Liu, Weishu1,2

2024-09-01

10.1002/aenm.202402621

ADVANCED ENERGY MATERIALS   影响因子和分区

1614-6832

1614-6840

["Gel-based ionic thermoelectric (i-TE) cells provide alternative thermal energy harvesting from the environment, showing obvious advantages in voltage matching for self-powered Internet-of-Things (IoT) sensors. However, the gel-based i-TE cells always suffer a long thermal charging time and poor output power performance. Herein, a multilayer electrode engineering strategy is proposed from the device-design level, aiming to decrease the ions' diffusion distance, increase the electrode surface area, and facilitate the ions' reaction and recovery process. The thermal charging time is shortened from 27 to 8 min as the electrode layers increase from 2 to 8. An ultrahigh instantaneous power density of 15.8 mW m-2 K-2 and 2 h output energy density (E2h) of 403 J m-2 are achieved in an 8-layer electrode i-TE cell. Finally, A flexible and wearable i-TE device with 20 units is demonstrated to generate a remarkable voltage of 3.8 V and output power of 282 mu W by harvesting the human body heat. This work provides a feasible and effective route to design the i-TE device, hopefully promoting its practical power generation application.","A novel multilayer electrode structure is proposed to decrease the electrode layer distance, offer more electrode area and facilitate the ions' diffusion and recovery, corresponding to shorten thermal charging time and increase the output performance. Ultrahigh power density of 15.8 mW m-2 K-2 and energy density of 403 J m-2 are achieved in gelatin based i-TE cells. image"]

ionic thermoelectric multilayer electrode structure thermal charging time ultrahigh output performance

SCI ; EI

英语

第一 ; 通讯

Shenzhen Innovation Program for Distinguished Young Scholars[RCJC20210706091949018] ; Shenzhen Key Program for Long-Term Academic Support Plan[20200925164021002] ; Guangdong Innovative and Entrepreneurial Research Team Program[2016ZT06G587] ; Guangdong Provincial Key Laboratory Program from the Department of Science and Technology of Guangdong Province[2021B1212040001] ; National Natural Science Foundation of China (NSFC)[52202250]

Chemistry ; Energy & Fuels ; Materials Science ; Physics

Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:001303394200001

WILEY-V C H VERLAG GMBH

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
2.Southern Univ Sci & Technol, Guangdong Prov Key Lab Funct Oxide Mat & Devices, Shenzhen 518055, Guangdong, Peoples R China

Li, Yuchen,Wang, Shuaihua,Yu, Mao,et al. Multilayer Electrode Strategy Shorten Thermal Charging Time and Boost Energy Output in Gelatin-Based i-TE Cells[J]. ADVANCED ENERGY MATERIALS,2024.

Li, Yuchen.,Wang, Shuaihua.,Yu, Mao.,Li, Huan.,Li, Benben.,...&Liu, Weishu.(2024).Multilayer Electrode Strategy Shorten Thermal Charging Time and Boost Energy Output in Gelatin-Based i-TE Cells.ADVANCED ENERGY MATERIALS.

Li, Yuchen,et al."Multilayer Electrode Strategy Shorten Thermal Charging Time and Boost Energy Output in Gelatin-Based i-TE Cells".ADVANCED ENERGY MATERIALS (2024).