1. 3D Printed Rechargeable Lithium-ion Batteries and High Performance Anode Materials Wang Ye Research Fellow

2. 2 Energy transmission High efficient energy storage devices Daily applications Market: million dollars Advantages of lithium ion batteries: 1. Various shape and size. 2. No memory effect.3. Environment friendly, non-toxic element. 4. Low cost. 5. High voltage. 6. Large energy density. 7. High cycle-life. 8. Low self-discharge rate. Introduction: Energy storage and 3D printing technology Distribution

3. Introduction: 3D printing technology Outstanding performance1 st 3D printed LIBs. Issue: High temperatureNot wearable 1.Zhu, C. etc. Nat. Commun. 2015, 6. 2.Sun, K. etc. Adv. Mater. 2013, 25, (33), 4539. 3D printing technology 1 st 3D printed micro-LIBs Why 3D Battery! DIW (direct ink writing) print graphene aerogel Additive technology! 3D! Large area, High power/energy density.

4. My work on 3D printed Lithium ion batteries Direct ink writing LIBs Fabrication process (a)Print/write current collector, anode, cathode electrodes. (b)Packaged by PDMS block. (c)Fill in electrolyte. Result: (a)Flexible substrate (b)Can power 10 LEDs for mins (c)Capacity: 0.05 mAh per cell How to improve : High performance active materials, device architecture! Achievement: 3D printed micro-LIBs (proof-of-concept) Fabrication processSet up: new direct writing 3D printer Set-up principle:  Robot move dispenser in X Y Z directions.  Drop/print ink on demand in line.  Line forms when Ink solidified by evaporating solvent by heating.

5. How to improve the performance? Please go to Poster 125 for more details!