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General Chemistry ›› 2018, Vol. 4 ›› Issue (2): 180001-180001.DOI: 10.21127/yaoyigc20180001

Special Issue: Fuel Cells

• Reports •     Next Articles

On-Chip, Mediator- and Membrane-Less Micro-Glucose Biofuel Cells Based on Layer-by-Layer Reduced Graphene Oxide-Enzyme Hybrids

Mengfan Wangab, Qian Taoab, Bo Liuab*(), Chengchao Lic, Libao Chenc, Chenglin Yanab*()   

  1. a College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, Jiangsu 215006, China;
    b Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, Jiangsu 215006, China
    c State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, China
  • Received:2018-01-10 Accepted:2018-02-09 Online:2018-06-27 Published:2018-06-27
  • Contact: Bo Liu, Chenglin Yan
  • Supported by:
     

Abstract:

Enzymatic biofuel cells (EBFCs) draw much attention since they use renewable fuels to generate electricity and power biological medical devices. However, such EBFCs’ application as devices has always been a puzzle to researchers, let alone their microminiaturization. Herein, we show the efficient embedding of enzymes in a porous reduced graphene oxide (RGO) matrix to form a unique sandwich structure for constructing an on-chip glucose biofuel cell (GBFC). During electrochemical deposition, laccase and glucose oxidase are incorporated in RGO layers to be used as cathode and anode materials, respectively. This GBFC delivers a maximum volumetric power density of 14.77 mW·cm-3 under physiological conditions (50 mM glucose, pH 7). Compared with previous work which is relatively large and cannot be separated from liquid phase system, our on-chip, mediator- and membrane-less micro-GBFC shows great potential to be applied as miniaturized devices to meet the rapidly growing need of being small, thin, wearable and even implantable in modern life.

 

Key words: on-chip energy devices, biofuel cells, layer-by-layer reduced graphene oxide, enzyme hybrids

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