High-power biofuel cell textiles from woven biscrolled carbon nanotube yarns
High-power biofuel cell textiles from woven biscrolled carbon nanotube yarns
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DOI：
10.1038/ncomms4928
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发表时间：
2014-06-01
影响因子：
16.6
通讯作者：
Kim, Seon Jeong
中科院分区：
文献类型：
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作者：
Kwon, Cheong Hoon;Lee, Sung-Ho;Kim, Seon Jeong
利用血液中的葡萄糖发电的生物燃料电池有望为植入式生物医学设备提供动力。将互连的酶和氧化还原介体固定在高导电性多孔电极中，可以最大限度地提高它们与电解质的相互作用，并最大限度地减少燃料和氧化剂的扩散距离，从而提高功率密度。在此，我们报告称，我们的无隔板碳纳米管纱线生物燃料电池可提供 0.70 V 的开路电压，最大面积功率密度为 2.18mW cm(-2)，比以前的碳纳米管纱线生物燃料电池高出三倍。与之前未受保护的生物燃料电池相比，在人血清中运行的生物燃料电池可提供高面积功率输出，并显着延长使用寿命（24 小时后仍保持 83%）。我们的双卷纱线生物燃料电池被编织成纺织品，具有植入葡萄糖能量收集所需的机械强度。
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.