Stretchable and Flexible Buckypaper‐Based Lactate Biofuel Cell for Wearable Electronics
Abstract
This work demonstrates a stretchable and flexible lactate/O2 biofuel cell (BFC) using buckypaper (BP) composed of multi‐walled carbon nanotubes as the electrode material. Free‐standing BP, functionalized with a pyrene‐polynorbornene homopolymer, is fabricated as the immobilization matrix for lactate oxidase (LOx) at the anode and bilirubin oxidase at the cathode. This biofuel cell delivers an open circuit voltage of 0.74 V and a high‐power density of 520 µW cm−2. The functionalized BP electrodes are assembled onto a stretchable screen‐printed current collector with an “island–bridge” configuration, which ensures conformal contact between the wearable BFC and the human body and endows the BFC with excellent performance stability under stretching condition. When applied to the arm of the volunteer, the BFC can generate a maximum power of 450 µW. When connected with a voltage booster, the on‐body BFC is able to power a light emitting diode under both pulse discharge and continuous discharge modes during exercise. This demonstrates the promising potential of the flexible BP‐based BFC as a self‐sustained power source for next‐generation wearable electronics.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 25, 2019
- Source ID
- 10.1002/adfm.201905785
Entities
People
- Anastasiia Berezovska
- Andrew J Gross
- Fabien Giroud
- Itthipon Jeerapan
- Jian Lv
- Joseph Wang
- Lu Yin
- Minh Khoi Le
- Nathaniel Georg Gutierrez
- Rachel O'Reilly
- Serge Cosnier
- Sheng Xu
- Xiaohong Chen
- Yang Li
Organizations
- Defense Threat Reduction Agency
- Grenoble Alpes University
- University of Birmingham
- University of California, San Diego