Pt Nanoflowers as a Highly Effective Electrocatalyst for Glucose Oxidation in Abiotic Glucose Fuel Cells

Abstract

Self-powered implantable medical devices (IMDs) without any external power supply are desired in a growing number of situations. Glucose fuel cells (GFCs) that convert the chemical energy of intrinsic glucose and oxygen into electricity are promising technology to achieve this goal. Herein, a Pt nanoflower (Pt NF) catalyst is prepared by using a facile one-step reduction method and employed as the anode catalyst for abiotic GFCs in a neutral environment at a physiological concentration of glucose. The Pt NF catalyst exhibits high electrocatalytic activity, catalytic selectivity, and good durability in the electrochemical analysis. The Pt NF’s rapid linear current response to the variation of glucose concentration within a wide range also makes it a promising material for glucose sensors. A GFC with two chambers fabricated with a Pt NF catalyst-decorated carbon paper (Pt NFs/CP) anode and a Pt sheet cathode generates a maximum power density (P max) of 13.8 μW cm–2, an open-circuit voltage (V OC) of 819.5 mV, and a short-circuit current density (J SC) of 0.12 mA cm–2, which makes it a viable candidate for application in self-powered devices.

Electrocatalytic urea oxidation: advances in mechanistic insights, nanocatalyst design, and applications

“…So far, a series of electrooxidation reactions based on methanol, 44–46 glycerol, 47,48 5-hydroxymethylfurfural, 49 glucose, 50,51 and hydrazine hydrate 52–54 have been identified as viable alternatives to the OER for enabling efficient hydrogen production via hydrolysis (Table 1). The required potentials are low, while some high value-added chemicals can be generated, such as formate, 2,5-furandicarboxylic acid, and glucaric acid.…”

Photo-, electro-, and photoelectro-catalytic conversion of glucose into high value-added products

“…Electrocatalytic oxidation of glucose has been extensively studied in glucose non-enzymatic sensing assays 84–88 and glucose fuel cells. 89–92 In contrast, the catalytic conversion of glucose into high-value-added products has received less attention. Electrochemical conversion of glucose enables control of the reaction process by applying potential under mild conditions without any oxidizing or reducing agents.…”

Formation of a Palladium Catalyst Layer Using an Anionic Surfactant and Subsequent Fabrication of a Glucose Fuel Cell

“…Fuel cells convert the chemical energy of a fuel to electrical energy. Recently, glucose fuel cells have attracted attention from researchers because glucose is inexpensive, suffers from no explosion hazard unlike hydrogen, and is safe and biocompatible. - In 2022, an implantable glucose fuel cell capable of directly converting glucose into electricity was developed . Currently, glucose fuel cells have attracted attention for their use in the medical field.…”