title: Highly Efficient Electrochemical Hydrogen Evolution Reaction at Insulating Boron Nitride Nanosheet on Inert Gold Substrate.
abstract: It is demonstrated that electrochemical hydrogen evolution reaction (HER) proceeds very efficiently at Au electrode, an inert substrate for HER, modified with BNNS, an insulator. This combination has been reported to be an efficient electrocatalyst for oxygen reduction reaction. Higher efficiency is achieved by using the size controlled BNNS (<1 μm) for the modification and the highest efficiency is achieved at Au electrode modified with the smallest BNNS (0.1-0.22 μm) used in this study where overpotentials are only 30 mV and 40 mV larger than those at Pt electrode, which is known to be the best electrode for HER, at 5 mAcm(-2) and at 15 mAcm(-2), respectively. Theoretical evaluation suggests that some of edge atoms provide energetically favored sites for adsorbed hydrogen, i.e., the intermediate state of HER. This study opens a new route to develop HER electrocatalysts.
authors: Center for Green Research on Energy and Environmental Materials and Global Research Center for Environment and Energy based on Nanomaterials Science (GREEN), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan.|International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan.|Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-0810, Japan.
authors: Kohei
authors: K
authors: Uosaki
authors: Center for Green Research on Energy and Environmental Materials and Global Research Center for Environment and Energy based on Nanomaterials Science (GREEN), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan.|Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-0810, Japan.
authors: Ganesan
authors: G
authors: Elumalai
authors: International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan.
authors: Hung Cuong
authors: HC
authors: Dinh
authors: Center for Green Research on Energy and Environmental Materials and Global Research Center for Environment and Energy based on Nanomaterials Science (GREEN), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan.
authors: Andrey
authors: A
authors: Lyalin
authors: Center for Green Research on Energy and Environmental Materials and Global Research Center for Environment and Energy based on Nanomaterials Science (GREEN), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan.|Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-0810, Japan.|Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan.
authors: Tetsuya
authors: T
authors: Taketsugu
authors: Center for Green Research on Energy and Environmental Materials and Global Research Center for Environment and Energy based on Nanomaterials Science (GREEN), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan.|International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan.|Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-0810, Japan.
authors: Hidenori
authors: H
authors: Noguchi