Materializing efficient methanol oxidation via electron delocalization in nickel hydroxide nanoribbon
- National Univ. of Singapore (Singapore)
- Agency for Science, Technology and Research (Singapore)
- National Univ. of Singapore (Singapore); Guilin Univ. of Electronic Technology, Guilin (China)
- Jiangsu Normal Univ., Jiangsu Sheng (China)
- Harbin Inst. of Technology, Heilongjiang Sheng (China)
- Beihang Univ., Beijing (China)
- National Univ. of Singapore (Singapore). Singapore Synchrotron Light Sources (SSLS)
- Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
- Agency for Science, Technology and Research, Singapore (Singapore). Inst. of High Performance Computing
Achieving a functional and durable non-platinum group metal-based methanol oxidation catalyst is critical for a cost-effective direct methanol fuel cell. While Ni(OH)2 has been widely studied as methanol oxidation catalyst, the initial process of oxidizing Ni(OH)2 to NiOOH requires a high potential of 1.35 V vs. RHE. Such potential would be impractical since the theoretical potential of the cathodic oxygen reduction reaction is at 1.23 V. Here we show that a four-coordinated nickel atom is able to form charge-transfer orbitals through delocalization of electrons near the Fermi energy level. As such, our previously reported periodically arranged four-six-coordinated nickel hydroxide nanoribbon structure (NR-Ni(OH)2) is able to show remarkable methanol oxidation activity with an onset potential of 0.55 V vs. RHE and suggests the operability in direct methanol fuel cell configuration. Thus, this strategy offers a gateway towards the development of high performance and durable non-platinum direct methanol fuel cell.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0012704
- OSTI ID:
- 1668648
- Report Number(s):
- BNL-219873-2020-JAAM
- Journal Information:
- Nature Communications, Vol. 11, Issue 1; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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