TY - JOUR
T1 - Intrinsically Stretchable Fuel Cell Based on Enokitake-Like Standing Gold Nanowires
AU - Zhai, Qingfeng
AU - Liu, Yiyi
AU - Wang, Ren
AU - Wang, Yan
AU - Lyu, Quanxia
AU - Gong, Shu
AU - Wang, Joseph
AU - Simon, George P.
AU - Cheng, Wenlong
N1 - Publisher Copyright:
© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2020/1/1
Y1 - 2020/1/1
N2 - Conventional fuel cells are based on rigid electrodes, limiting their applications in wearable and implantable electronics. Here, it is demonstrated that enokitake-like vertically-aligned standing gold nanowires (v-AuNWs) can also serve as powerful platform for stretchable fuel cells by using ethanol as model system. Unlike traditional fuel cell electrodes, the v-AuNWs have “Janus Morphology” on both sides of the film and also are highly stretchable. The comparative studies demonstrate that tail side exposed v-AuNWs based stretchable electrodes outperform the head-side exposed v-AuNWs toward the electro-oxidation of ethanol due to the direct exposure of high-surface-area nanowires to the fuels. Therefore, a stretchable fuel cell is fabricated utilizing tail side based interdigitated electrodes, where v-AuNWs and Pt black modified v-AuNWs serve as the anode and cathode, respectively. The as-prepared stretchable fuel cell exhibits good overall performance, including high power density, current density, open-circuit voltage, stretchability, and durability. Most importantly, a wearable fuel cell is also achieved by integrating tattoo-like interdigitated electrodes with a thin layer of sponge as a fuel container, exhibiting good performance under various deformations (compression, stretching, and twisting). Such attractive performance in conjunction with skin-like in-plane design indicates its great potential to power the next-generation of wearable and implantable devices.
AB - Conventional fuel cells are based on rigid electrodes, limiting their applications in wearable and implantable electronics. Here, it is demonstrated that enokitake-like vertically-aligned standing gold nanowires (v-AuNWs) can also serve as powerful platform for stretchable fuel cells by using ethanol as model system. Unlike traditional fuel cell electrodes, the v-AuNWs have “Janus Morphology” on both sides of the film and also are highly stretchable. The comparative studies demonstrate that tail side exposed v-AuNWs based stretchable electrodes outperform the head-side exposed v-AuNWs toward the electro-oxidation of ethanol due to the direct exposure of high-surface-area nanowires to the fuels. Therefore, a stretchable fuel cell is fabricated utilizing tail side based interdigitated electrodes, where v-AuNWs and Pt black modified v-AuNWs serve as the anode and cathode, respectively. The as-prepared stretchable fuel cell exhibits good overall performance, including high power density, current density, open-circuit voltage, stretchability, and durability. Most importantly, a wearable fuel cell is also achieved by integrating tattoo-like interdigitated electrodes with a thin layer of sponge as a fuel container, exhibiting good performance under various deformations (compression, stretching, and twisting). Such attractive performance in conjunction with skin-like in-plane design indicates its great potential to power the next-generation of wearable and implantable devices.
KW - electro-oxidation
KW - flexible
KW - fuel cells
KW - gold nanowires
KW - stretchable
UR - http://www.scopus.com/inward/record.url?scp=85075742170&partnerID=8YFLogxK
U2 - 10.1002/aenm.201903512
DO - 10.1002/aenm.201903512
M3 - 文章
AN - SCOPUS:85075742170
SN - 1614-6832
VL - 10
JO - Advanced Energy Materials
JF - Advanced Energy Materials
IS - 2
M1 - 1903512
ER -
