期刊
NATURE COMMUNICATIONS
卷 5, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms4928
关键词
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资金
- Creative Research Initiative Center for Bio-Artificial Muscle of the Ministry of Education, Science and Technology (MEST)
- MEST-US Air Force Cooperation Program in Korea [NRF-2013K1A3A1A32035592]
- Air Force Grant [AOARD-10-4067]
- Air Force Office of Scientific Research grant [FA9550-12-1-0211]
- Robert A. Welch Foundation in the USA [AT-0029]
- Australian Research Council through the Centre of Excellence and Fellowship programs
Biofuel cells that generate electricity from glucose in blood are promising for powering implantable biomedical devices. Immobilizing interconnected enzyme and redox mediator in a highly conducting, porous electrode maximizes their interaction with the electrolyte and minimizes diffusion distances for fuel and oxidant, thereby enhancing power density. Here we report that our separator-free carbon nanotube yarn biofuel cells provide an open-circuit voltage of 0.70 V, and a maximum areal power density of 2.18mW cm(-2) that is three times higher than for previous carbon nanotube yarn biofuel cells. Biofuel cell operation in human serum provides high areal power output, as well as markedly increased lifetime (83% remained after 24 h), compared with previous unprotected biofuel cells. Our biscrolled yarn biofuel cells are woven into textiles having the mechanical robustness needed for implantation for glucose energy harvesting.
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