TY - JOUR
T1 - Facile fabrication of a fully biodegradable and stretchable serpentine-shaped wire supercapacitor
AU - Lee, Hanchan
AU - Lee, Geumbee
AU - Yun, Junyeong
AU - Keum, Kayeon
AU - Hong, Soo Yeong
AU - Song, Changhoon
AU - Kim, Jung Wook
AU - Lee, Jin Ho
AU - Oh, Seung Yun
AU - Kim, Dong Sik
AU - Kim, Min Su
AU - Ha, Jeong Sook
N1 - Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (Grant No. NRF-2016R1A2A1A05004935). The authors also thank the KU-KIST graduate school program of the Korea University.
Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government ( MSIP ) (Grant No. NRF-2016R1A2A1A05004935 ). The authors also thank the KU-KIST graduate school program of the Korea University.
Publisher Copyright:
© 2019
PY - 2019/6/15
Y1 - 2019/6/15
N2 - With the rapidly growing interest and usage in wearable electronics, considerable attention has been paid to the environmental concern caused by electronic waste and the toxicity of constituent materials. In this study, we report the facile fabrication of a fully biodegradable and stretchable serpentine-shaped wire supercapacitor by using a water-soluble molybdenum (Mo) wire, polyvinyl-alcohol-based biodegradable gel polymer electrolyte, and biodegradable elastomer—poly(1,8-octanediol-co-citrate) (POC). A thin oxide layer grown on a Mo wire via simple anodization drastically improves the electrochemical capacitance by inducing pseudocapacitance. As a result, the fabricated supercapacitor exhibits areal capacitance of 4.15 mF cm−2 at 0.05 mA cm−2, energy density of 0.37 µWh cm−2, and power density of 0.8 mW cm−2. The design of the serpentine-shaped wire supercapacitor encapsulated with POC gives mechanical and electrochemical stability against deformations of repetitive stretching. The biodegradable property of the supercapacitor is confirmed by the measurements of the change in mass of its constituent materials with elapsed time in water. Furthermore, the transient electrochemical performance of the fabricated wire supercapacitor in water over a certain period of time is observed to depend on the encapsulation.
AB - With the rapidly growing interest and usage in wearable electronics, considerable attention has been paid to the environmental concern caused by electronic waste and the toxicity of constituent materials. In this study, we report the facile fabrication of a fully biodegradable and stretchable serpentine-shaped wire supercapacitor by using a water-soluble molybdenum (Mo) wire, polyvinyl-alcohol-based biodegradable gel polymer electrolyte, and biodegradable elastomer—poly(1,8-octanediol-co-citrate) (POC). A thin oxide layer grown on a Mo wire via simple anodization drastically improves the electrochemical capacitance by inducing pseudocapacitance. As a result, the fabricated supercapacitor exhibits areal capacitance of 4.15 mF cm−2 at 0.05 mA cm−2, energy density of 0.37 µWh cm−2, and power density of 0.8 mW cm−2. The design of the serpentine-shaped wire supercapacitor encapsulated with POC gives mechanical and electrochemical stability against deformations of repetitive stretching. The biodegradable property of the supercapacitor is confirmed by the measurements of the change in mass of its constituent materials with elapsed time in water. Furthermore, the transient electrochemical performance of the fabricated wire supercapacitor in water over a certain period of time is observed to depend on the encapsulation.
KW - Anodized molybdenum oxides
KW - Biodegradable polymers
KW - Biodegradable supercapacitors
KW - Stretchable supercapacitors
KW - Transient electronics
KW - Wire-shaped supercapacitors
UR - http://www.scopus.com/inward/record.url?scp=85061753657&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2019.02.076
DO - 10.1016/j.cej.2019.02.076
M3 - Article
AN - SCOPUS:85061753657
SN - 1385-8947
VL - 366
SP - 62
EP - 71
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
ER -