Self‐Powered Electrocatalytic Aldehyde Reforming Fuel Cell for Sustainable H <sub>2</sub> Generation with ∼200% Faradaic Efficiency
Abstract
Abstract Formaldehyde (HCHO), a promising yet challenging hydrogen carrier, offers a unique opportunity for efficient hydrogen generation through electro‐oxidation, simultaneously eliminating harmful HCHO and contributing to environmental sustainability. This study rises to the challenge by pioneering a hybrid acid/alkali formaldehyde hydrogen production fuel cell (h‐AAFHFC), an integrated system that integrates anodic partial electro‐reforming of aldehydes at low potential with the cathodic hydrogen evolution reaction (HER). The device introduces a new self‐powered paradigm for hydrogen generation, driven by electrochemical neutralization energy (ENE), featuring high Faradaic efficiency for hydrogen production, co‐generation of electricity, and HCOOH. The h‐AAFHFC attains an open‐circuit voltage (OCV) of 1.11 V and a peak power density of 94 mW cm −2 , enabling simultaneous hydrogen production at both electrodes with an extraordinary Faradaic efficiency of approximately 200%. This breakthrough marks a transformative shift, moving from traditional electricity‐driven systems to self‐sustaining H 2 generation. Our work demonstrates a promising pathway for sustainable hydrogen production, advancing the potential of clean hydrogen energy technologies.
Article Details
Authors (8)
Fen Hu
Kai Chen
Zhiwen Lu
State Key Laboratory of Structural Chemistry, and Fujian Provincial Key Laboratory of Materials and Techniques Toward Hydrogen Energy
Jiyuan Gao
State Key Laboratory of Structural Chemistry and Fujian Provincial Key Laboratory of Materials and Techniques toward Hydrogen Energy Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou, Fujian 350002 P.R. China
Senchen Lan
Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation College of Resources and Environment Fujian Agriculture and Forestry University Fuzhou, Fujian 350002 P.R. China
Junxiang Chen
State Key Laboratory of Structural Chemistry and Fujian Provincial Key Laboratory of Materials and Techniques Toward Hydrogen Energy
Suqin Ci
Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong University Nanchang 330063 P.R. China
Zhenhai Wen
State Key Laboratory of Structural Chemistry, and Fujian Provincial Key Laboratory of Materials and Techniques Toward Hydrogen Energy