Outside-to-inside: Efficacy comparation of Mn bulk and surface-doped TiO₂{201} in E-fueled solar flow battery system

Lu, Ping1; Gu, Zixing1; Zhang, Zihan1; Su, Huaneng1,2; Ma, Qiang1; Li, Chunsheng3; Wei, Lei4; Xu, Qian1

2024-03-01

10.1016/j.surfin.2024.104174

SURFACES AND INTERFACES   影响因子和分区

2468-0230

The all-in-one E-fueled solar flow battery system that can be recharged with liquid fuel is a new type of power system. It can continuously convert solar energy into liquid fuel without relying on external power supply equipments. However, the interface between the photoanode and the electrolyte often exhibits unsteady behavior, resulting in poor performance of the system. In this work, the {201} facets are selected and the impact of two doping treatment strategies for TiO2 {201} photoanode on the performance of the E-fueled solar flow battery system is systematically studied through the I-t curve, linear sweep voltammetry, Mott-Schottky plot. The results show that the un-biased photocharging current of bulk-doped TiO2 can reach 2.7 mA.cm(-2) in the battery system test, only relying on the self-built electric field at the interface, and the energy conversion efficiency approaches 2.67 %. In addition, the performance is analyzed by the combination of transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and other characterizations, with the aim of distinguishing the effects of bulk- and surface-doped Mn and accurately revealing the mechanism of their influences from the outside to the inside. Finally, the optimization rules of the un-biased light charging mode of the system are explored.

Solar flow battery TiO2{201} Bulk and surface-doped Photocurrent energy level Interface

SCI

英语

通讯

NSFC, China["52206089","51676092"] ; Six-Talent -Peaks Project in Jiangsu Province[2016-XNY-015] ; High-Tech Research Key Laboratory of Zhenjiang City[SS2018002] ; Science and Technology Projects of Suzhou City["SYC2022043","SYG202025"]

Chemistry ; Materials Science ; Physics

Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter

WOS:001207560900001

ELSEVIER

Web of Science

1.Jiangsu Univ, Inst Energy Res, Zhenjiang 212013, Peoples R China
2.Changzhou Vocat Inst Ind Technol, Changzhou 213164, Peoples R China
3.Suzhou Univ Sci & Technol, Key Lab Adv Electrode Mat Novel Solar Cells Petr &, Suzhou 215009, Peoples R China
4.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China

Lu, Ping,Gu, Zixing,Zhang, Zihan,et al. Outside-to-inside: Efficacy comparation of Mn bulk and surface-doped TiO₂{201} in E-fueled solar flow battery system[J]. SURFACES AND INTERFACES,2024,46.

Lu, Ping.,Gu, Zixing.,Zhang, Zihan.,Su, Huaneng.,Ma, Qiang.,...&Xu, Qian.(2024).Outside-to-inside: Efficacy comparation of Mn bulk and surface-doped TiO₂{201} in E-fueled solar flow battery system.SURFACES AND INTERFACES,46.

Lu, Ping,et al."Outside-to-inside: Efficacy comparation of Mn bulk and surface-doped TiO₂{201} in E-fueled solar flow battery system".SURFACES AND INTERFACES 46(2024).