哈工大Adv.Fun.Mater.：3D列印全纖維柔性鋰離子電池的設計
前言
傳統的大規模電力系統無法滿足可穿戴設備需要的柔性和透氣性。儘管科研人員在開發柔性存儲設備方面付出了巨大努力，但是其在規模化應用、成本和效率上仍存在問題。哈工大王一博博士開發了一種3D列印技術製備全纖維柔性鋰電池。其在50mA/g的電流密度下比容量可高110mAh/g，而且柔性性能優良，或可用於未來的可穿戴電子設備。
文章圖文概要
3D列印全纖維柔性鋰電池的設計理念和製作工藝
a)3D printing fabrication process.
b)Thepotential application of fiber-shaped batteries for wearable applications
LFP、LTO油墨和傳統LFP漿料油墨的流變性能對比
LFP：lithium iron phosphate；LTO：lithium titanium oxide
a)Apparent viscosityfor LFP/CNT/PVDF and LTO/CNT/PVDF inks.
b)Storage modulusG ′and loss modulusG ″for LFP/CNT/PVDF inks and LTO/CNT/PVDF inks, respectively.
c)Apparent viscosity for conventional LFP slurry.
d)Storage modulusG ′and loss modulusG″for conventional LFP slurry.
e)Storage and loss modulus agingfor LFP/CNT/PVDF ink.
f)Storage and loss modulus aging for LTO/CNT/PVDF ink
纖維形狀LFP電極的形態表徵
a)The optical image of a wet fiber during the printing process.
b)Theoptical image of a wet fiber being removed from the coagulation bath.
c)The optical image of a dry fiber.
d,e)The optical image of the original and stretched fiber, respectively.
f)The optical image of a fiber bearing a burden.
g)SEM image of the LFP fiber.
h)Cross-sectional view of the LFP fiber.
i)SEM image of yarn composed of three LFP fibers.
j)SEM image of polymer layer coated on the yarn fibers.
k)Magnified SEM image of the gel electrolyte coating layer.
l)Magnified cross-sectional SEM image of polymer coating on the fibers
液體電解質紐扣電池的半電池和全電池的性能比較
a)Charge and discharge profiles of theLFP fiber half-cell.
b)Cycling stability of the LFP fiber half-cell.
c)Charge and discharge profiles of the LTO fiber half-cell.
d)Cycling stability of the LTO fiber half-cell.
e)Charge and discharge profiles of the full cell.
f)Cycling stability profiles of the full cell
全纖維鋰電器件和凝膠電解質的電化學性能
a)Schematic of the all-fiber LIB device.
b)Charge and dischargeprofiles of the all-fiber LIB device.
c)Cycling stability profiles.
d,e)Demonstration of the all-fiber device lighting up a LED in an unstrained and bent state.
f)Graphical illustration of fiber batteries weaved into textiles.
g)A photo image to demonstrate the integration of fiber electrodes into textile fabrics
小結
該團隊使用先進的3D列印技術實現了全纖維柔性鋰離子電池的智能設計和快速製造。在這項工作中開發的快速，低成本，可擴展的3D列印方法將為智能，柔性和可穿戴的全纖維能量存儲設備開闢新的途徑。
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TAG:Electrochemistry |