Electropolymerized Chlorophyll Derivative Biopolymers for Supercapacitors
Electropolymerized Chlorophyll Derivative Biopolymers for Supercapacitors
复制标题
DOI：
10.1016/j.cej.2022.138000
复制
发表时间：
2022-07
影响因子：
15.1
通讯作者：
Chao Zhang;Shengnan Duan;Mi Zhou;Ziyan Liu;Hangchen Ren;S. Sasaki;Xiaofeng Wang
中科院分区：
文献类型：
--
作者：
Chao Zhang;Shengnan Duan;Mi Zhou;Ziyan Liu;Hangchen Ren;S. Sasaki;Xiaofeng Wang
叶绿素（Chls）很少在聚合相中制备和研究。我们首次证明了通过在四吡啶环的c3位置的外围乙烯基或乙基的电化学偶联制备四种叶绿素衍生物的聚合薄膜。这些PolyChl（聚合叶绿素）薄膜的表征表明，锌基PolyChl在电聚合过程中保持在氯大环中，而镍基PolyChl在电聚合过程中转变为卟啉大环。在三电极系统中使用这些PolyChls作为工作电极，polyniccl - a在5 mV s−1时的最高电容为466 F g−1。为了充分验证其实用价值和环境友好性，我们还利用apolynicl - assolid -state对称超级电容器和先前开发的全氯基生物太阳能电池，制作了一种新型的仿生太阳能光电转换存储装置。该器件在不同光照强度下均表现出优异的光充放电性能。以无毒、可降解、可持续、无污染的Chls为主要材料，将太阳能转化为电能并储存在超级电容器中，为未来清洁能源系统的建设提供了一条很有前途的途径。同时，本研究还创建了一个具有最丰富、环保、多功能Chl衍生物的新型生物聚合物家族。
Chlorophylls (Chls) have rarely been prepared and studied in the polymeric phase. We demonstrate for the first time the preparation of four polymerized thin films of chlorophyll derivatives, via the electrochemical coupling of peripheral vinyl or ethynyl groups at the C3-position of the tetrapyrrole ring. The characterization of these PolyChl (polymerized chlorophylls) films suggests that Zn-based PolyChls remain in the chlorin macrocycle, whereas Ni-based PolyChls turn into porphyrin macrocycles during the electropolymerization processes. Employing these PolyChls as the working electrodes in a three-electrode system, the highest capacitance 466 F g−1at 5 mV s−1is obtained forPolyNiChl-A.To fully verify the practical value and environment-friendly property, we also fabricate a novel bio-inspired solar light-to-electricity conversion-storage device using aPolyNiChl-Asolid-state symmetric supercapacitor and a previously developed all-Chl-based biosolar cell. The device shows excellent photo-charging-discharging behavior under different light illumination intensities. Using non-toxic, degradable, sustainable and pollution-free Chls as dominating material, transferring solar energy to electricity and storing it in supercapacitor, the hybrid energy conversion and storage device suggests a promising way on construction of future clean energy system. Meanwhile this study also creates a novel family of biopolymers with the most abundant, environmentally friendly, and multi-functional Chl derivatives.