Photoelectrochemical In Situ Energy Storage and the Anticorrosion Dual Function System Based on Loose Carbon Nitride Thick Film Electrodes,ACS Applied Electronic Materials

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Photoelectrochemical In Situ Energy Storage and the Anticorrosion Dual Function System Based on Loose Carbon Nitride Thick Film Electrodes
ACS Applied Electronic Materials ( IF 4.3 ) Pub Date : 2020-06-11 , DOI: 10.1021/acsaelm.0c00377
Wanfeng Li _{1,

2} , Ting Shen _{1,

2} , Yi Wang _{1,

2} , Faqian Liu _{1,

2} , Weihua Li _{1,

2,

3}

Affiliation

The photoelectrochemical application system with in situ energy storage and anticorrosion dual function is constructed, in which a loose morphology carbon nitride thick film electrode prepared by the one-step gas expansion strategy is used as a photoanode, and photoelectrochemical anticorrosion performance is used as an evaluation. The long-range electron path resulted from the structure design can cause certain delay of the recombination of photocarriers, which facilitates the realization of simultaneous energy storage and anticorrosion for this system. The loose morphology promotes the ion transfer kinetics, shortens the energy storage time (20 times) greatly, and broadens the capacity (160 mV). The energy storage efficiency of this system is up to 50%, and the discharge time (discharge to −0.7 V) is 3000 times that of the system based on the compact carbon nitride film electrode. Moreover, the photoelectrochemical anticorrosion efficiency is increased by 82 times and can provide as long as 6 h cathodic protection for carbon steel.

中文翻译：

基于松散氮化碳厚膜电极的光电化学原位储能和防腐双功能系统

构建了具有原位储能和防腐双重功能的光电化学应用系统，以单步气体膨胀策略制备的疏松形貌的氮化碳厚膜电极作为光阳极，并以光电化学防腐性能作为评价指标。。结构设计产生的长程电子路径会引起光载流子复合的一定延迟，从而有利于该系统同时实现储能和防腐。松散的形态促进了离子转移动力学，大大缩短了能量存储时间（20倍），并扩大了容量（160 mV）。该系统的储能效率高达50％，放电时间（放电至-0。7 V）是基于紧凑型氮化碳膜电极的系统的3000倍。此外，光电化学腐蚀效率提高了82倍，可以为碳钢提供长达6小时的阴极保护。

更新日期：2020-07-28

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