用户名: 密码: 验证码:
弹性可穿戴的环状超级电容器
详细信息    查看官网全文
摘要
超级电容器由于其充放电速率快,寿命长,安全性好等优点而在新一代柔性储能器件中备受关注~([1]),然而目前报道的柔性超级电容器主要为超薄平面状和纤维状两种~([2,3])。前者可穿戴性不足难以适应复杂弯曲的身体表面,后者能量密度相对较低且难以大尺寸连续制备。基于此,本文报道了一种弹性可穿戴的环状超级电容器。该电容器在电流密度1Ag~(-1)的条件下比容量为134.8 Fg~(-1),并且其电化学性能在不同弹性变形过程中能够稳定维持。由于独特的环状结构以及良好的弹性形变能力,该电容器可以直接穿戴在不同尺寸和形状的身体表面,能够很好的满足可穿戴需求。
The development of flexible energy storage devices is critical while it remains challenging for wearable electronics.Herein,a new family of elastic and wearable ring-type supercapacitors is fabricated by winding aligned carbon nanotube/poly(3,4-ethyl-enedioxy-thiophene):poly(styrene sulfonate) composite sheets onto an elastic polymer ring.The supercapacitor delivers a high specific capacitance of 134.8 F g~(-1) at a current density of 1 A g~(-1).Importantly,the specific capacitance has been well maintained after expanding and pressing,which endows the supercapacitor with unique advantages,e.g.,it can be used for substrates with different sizes and shapes and may satisfy a variety of wearable applications as well as other fields.
引文
[1]Chen,T.;Hao,R.;Peng,H.;Dai,L.Angew.Chem.Int.Ed.,2015,54:618-622.
    [2]Nystrom,G.,Marais,A.,Karabulut,E.,Wagberg.L.,Cui,Y.,Hamedi,M.Nat.Common.,2015,6:7529.
    [3]Chen,X.;Qiu,L.;Ren,J.;Guan,G.;Lin,H.;Zhang,Z.;Chen,P.;Wang,Y.;Peng,H.Adv.Mater.,2013,25:6436-6441.

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700