Advanced Biowaste‐Based Flexible Photocatalytic Fuel Cell as a Green Wearable Power Generator

Abstract

This study designs a wearable power generator from a flexible, photocatalytic fuel cell (fPFC) using various biowaste sources (lactic acid, ethanol, methanol, urea, glycerol, and glucose) as fuel. The fPFC uses light irradiation and the decomposition of biowaste to generate electrical power under both flat and bending (r = 3 cm) conditions. When employed as a sweat band, the fPFC generates a maximum power 4.0 mW cm−2 g−1 from human sweat. The wearable fPFC is able to overcome many of the disadvantages of wearable microbial and enzymatic cells while providing comparable if not superior power density.

Novel Ag/p-AgBr/n-BiVO4 Plasmonic Heterojunction Photocatalyst: Study on the Excellent Photocatalytic Performance and Photocatalytic Mechanism

“…Photocatalytic technology offers an opportunity to overcome the problem. − Titanium dioxide as a classical photocatalyst is widely used, but it has some shortcomings (low utilization of solar energy), which seriously limit its practical application. Therefore, designing a new and efficient photocatalyst to utilize visible light is the focus in the current study of photocatalysis. − Bismuth vanadate (BiVO 4 , n-type semiconductor) attracts increasingly bigger attention due to its excellent chemical stability, nontoxicity, and so on. , However, further improving photocatalytic performance is necessary due to its low ability to separate electron–hole pairs. − …”

A Graphene‐Based Coaxial Fibrous Photofuel Cell Powered by Mine Gas

“…In addition, they are environmentally benign and sustainable, considering the coupled conversion of light and chemical energy into electric power—particularly if the source of chemical energy is an environmental pollutant . Recently, a flexible membrane‐based PFC was designed, with TiO 2 loaded on its photoanode, which could produce power using various biowaste sources as fuels even under bending conditions, demonstrating the potential application of flexible PFC as a renewable and green technology. Though flexible PFC manufacturing is already under way, several issues remain to be addressed to improve their photoelectric performance, flexibility, manipulation, durability, and cost competitiveness to meet the standards of real application.…”

Optical constants of DC sputtering derived ITO, TiO2 and TiO2:Nb thin films characterized by spectrophotometry and spectroscopic ellipsometry for optoelectronic devices

“…ITO, TiO 2 and TiO 2 :Nb (NTO) have been used as transparent electrodes in many optoelectronic devices such as: Dye synthesized solar cells (DSSC) [1,2,3], organic emitting diode and devices (OLEDs) [4,5,6], liquid crystal display (LCDs) [7,8]. In addition, these films have wide range of well perspective applications using flexible substrates such as: optoelectronic devices [9,10], flat panel displays [11,12,13], photovoltaic devices; DSSC [14,15,16,17,18,19], organic solar cells [20,21,22], organic light emitting diode [23,24,25], gas sensors [26,27], light emitting transistor [28], photocatalytic [29,30], electrochromic [31,32], perovskite solar cells [33,34], microelectronic devices [35], and thin film transistor [36,37]. Transparent thin films are usually fabricated by using different techniques, such as: sol-gel (spin coating) [38,39], spray pyrolysis [40,41,42], reactive magnetron sputtering [43,…”