Study On The Manufacture And Performance Of Degradable Zinc Ion Battery

Biodegradable electronics refers to a new kind of electronic device fabricated using specific materials and processes,in which the physical form of the electronic functional device can disappear partially or completely immediately under an external controllable trigger.Biodegradable electronic devices have subverted people’s understanding of traditional electronic devices.It will have a very broad application prospect in implantable medical electronic devices,drug sustained-release,electronic skin,security and safety electronic systems,biodegradable environmental sensors and zero-waste electronic devices.However,the biodegradable electronic technology is still in the initial stage of research and development.In the future,more in-depth and systematic research is needed,especially the research and development of energy devices that provide power for the normal operation of biodegradable devices is relatively slow.In this thesis,we designed and assembled two kinds of structures of degradable zinc ion batteries（DZIBs）,further exploring their electrochemical performance and degradation performance.The research of this thesis is mainly divided into the following two parts:（1）Manufacture and performance of the sandwich shaped DZIBs using guar gum-cellulose aerogel electrolyte.This electrolyte film has a high ionic conductivity of approximately 4.73×10^-2 S cm^-1 and good mechanical properties.When applied to DZIBs,the production of zinc dendrites can be restrained,leading to the battery showing excellent electrochemical performance.The battery exhibits a specific capacity of 1 C at a current density of 308 m A g^-1 after 100 cycles and a steady cycling ability,the capacity retention almost unchanged after 200 cycles.In addition,all components of the prepared DZIBs can be successfully degraded or disintegrate in phosphate-buffered saline（PBS）containing a solution of proteinase K after approximately 40 days.（2）Manufacture and performance of the interdigital pattern DZIBs using guar gum-gelatin gel electrolyte.The interdigital pattern DZIBs is simple to manufacture and all components can be successfully degraded in PBS containing a solution of proteinase K after approximately 14 days.The DZIBs has a high specific capacity of 332.9 m A h g^-1 at the current density of 1C.After 130 cycles,still 98%capacity retention rate.The high skin fit of the silk protein film packaging material were used for the DZIBs,making a huge step towards the development of wearable batteries.