碳基电子学 课程汇报
A review of CNT and graphene in energy harvesting and storage applications——supercapacitors
汇报人：lcm
超级电容器概述
碳材料：
活性炭
双电层电石墨烯
rGO&MnO2&PPy
ACS Nano, 2015, 9 (5), pp 4766–4775
From Industrially Weavable and Knittable Highly Conductive Yarns to Large Wearable Energy Storage Textiles
Figure 2. SEM images
Adv. Mater. 2016, 28, 8431–8438 Large-Area Supercapacitor Textiles with Novel Hierarchical Conducting Structures
Paper-like Supercapacitors
Adv. Mater. 2016, 28, 8431–8438 Large-Area Supercapacitor Textiles with Novel Hierarchical Conducting Structures
Paper-like Supercapacitors
Figure 4. The electrochemical performance of the supercapacitor textiles with increasing sizes Adv. Mater. 2016, 28, 8431–8438 Large-Area Supercapacitor Textiles with Novel Hierarchical Conducting Structures
Adv. Mater. 2014, 26, 8126–8132
Fiber-like flexible Supercapactiors
Figure 3. Electrochemical characterization of the electrochromic fiber-shaped supercapacitor.
Adv. Mater. 2014, 26, 8126–8132 Electrochromic Fiber-Shaped Supercapacitors
Paper-like Supercapacitors
Figure 1. Schematic illustration to the experimental procedures and structures of the large-area supercapacitor textile
发展趋势——复合电容
• 碳材料与导电聚合物复合
• 通过聚合物链的共轭π键的氧化还原反应储存和释放电荷。循环充放电过程 中由于离子的嵌入和脱出导致聚合物体积不断变化，由于膨胀、收缩导致 电极退化，采用CNT或石墨烯做弹性体或表面增强，可延长电极寿命。
• 碳材料与金属氧化物复合
• 金属氧化物具有较高的理论电容，是双电层电容的1000多倍，但金属氧化 物一般导电性较差，限制了其应用，与碳材料复合，一方面可增强导电性 ，一方面可以增加比表面积，同时合适的组合还能拓展电压窗口。
>10000 cycles
Science 335, 1326 (2012)
Sci China Mater 2016,59(6):475-494
CNTs & graphene in Supercapacitors
Fiber-like flexible Supercapactiors
Specific capacitance:255.5F/g(0.1890mF/cm) Energy density:12.75W h/kg Power density: 1494W/kg
Interdigited structure Supercapacitors
Figure 2. The electrochemical performance of mSCs.
Adv. Mater. 2014, 26, 5108–5112 Selective Wetting-Induced Micro-Electrode Patterning for Flexible Micro-Supercapacitors
Figure 3. Supercapacitor textiles based on the different electrode materials but with the same area of 16 cm 2 at a current of 8 mA (0.5 mA cm −2 ).
SEM images of a PANI/polyester textile electrode without RGO at low and high magnifications, respectively
rGO&MnO2&PPy
ACS Nano, 2015, 9 (5), pp 4766–4775
rGO&MnO2&PPy
ACS Nano, 2015, 9 (5), pp 4766–4775
Thank you !
2017.05.10
混 合
学
型
电
电
容 器
过渡族金属氧化物：
容
RuOx/Co3O4
器
赝电容
MnOx/NiOx/FeOx 导电聚合物：
PPy/PEDOT/PANI
Capacitors & Supercapacitors & Batteries
高能量密度
高响应速率
快速充/放电能力
较短的载流子迁移路径
循环寿命长
Interdigited structure Supercapacitors
Figure 1. Schematic illustration for the fabrication of mSCs and images of mSCs. Adv. Mater. 2014, 26, 5108–5112 Selective Wetting-Induced Micro-Electrode Patterning for Flexible Micro-Supercapacitors