Biodegradable magnesium/iron batteries with polycaprolactone encapsulation:A microfabricated power source for transient implantable devices

作     者：Melissa Tsang Andac Armutlulu Adam W.Martinez Sue Ann Bidstrup Allen Mark G.Allen 

作者机构：School of Biomedical EngineeringGeorgia Institute of TechnologyAtlantaGA 30332USA School of Chemical and Biomolecular EngineeringGeorgia Institute of TechnologyAtlantaGA 30332USA School of Electrical and Computer EngineeringGeorgia Institute of TechnologyAtlantaGA 30332USA Department of Chemical and Biomolecular EngineeringUniversity of PennsylvaniaPhiladelphiaPA 19104USA Department of Electrical and Systems EngineeringUniversity of PennsylvaniaPhiladelphiaPA 19104USA 

出 版 物：《Microsystems & Nanoengineering》 (微系统与纳米工程（英文）)

年 卷 期：2015年第1卷第1期

页      面：64-73页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0811[工学-控制科学与工程] 0702[理学-物理学] 

主　　题：biodegradable batteries magnesium electroplating microfabrication PCL transient electronics 

摘      要：This study presents the design,fabrication,and testing of biodegradable magnesium/iron batteries featuring polycaprolactone(PCL)as a packaging and functional *** use of PCL encapsulation minimized the electrochemical cell volume and supported longer discharge lifetimes and higher discharge rates than state-of-the-art biodegradable ***,the electrodes were separated and insulated by a 5μm-thick PCL layer that served as both a battery packaging material and a permeable coating for physiological solution to penetrate and activate the battery.A systematic investigation of the electrode size,discharge rates,electrolyte selection,and polymeric coating revealed the critical reactions and phenomena governing the performance of the Mg-based biodegradable *** with previous reports on biodegradable batteries and medicalgrade non-degradable lithium-ion batteries demonstrated the superior performance of PCL-coated Mg/Fe batteries at these size scales,which exhibited an energy density of 694 Wh kg^(−1) and a total volume of 0.02 cm^(3).