Co-Co6Mo6C2 heterostructure grown on carbon nanofibers as tri-functional electrocatalyst for overall water splitting and rechargeable Zn-air batteries
Source abstract
Abstract
The advancement of cost-effective and efficient electrocatalysts for the hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and oxygen reduction reaction (ORR) is crucial for the progress of clean energy conversion and storage technologies. In this work, cobalt (Co) and cobalt-molybdenum (Mo) bimetallic carbide (Co 6Mo 6C 2) heterostructure grown on carbon nanofibers (denoted as Co-Co 6Mo 6C 2/CNFs) as tri-functional electrocatalyst were prepared by a four-step method. Benefiting from the electronic structure modulation between the heterostructure to improve the catalytic activity, Co-Co 6Mo 6C 2/CNFs exhibits high catalytic activity for HER (91 mV @ 10 mA cm −2), OER (293 mV @ 10 mA cm −2) and ORR (E 1/2=0.80 V). Moreover, Co-Co 6Mo 6C 2/CNFs assembled overall water splitting electrolyzer achieves a current density of 10 mA cm −2 with a battery voltage of only 1.70 V and has long-term durability. Zn-air batteries (ZABs) based on Co-Co 6Mo 6C 2/CNFs has a power density of 156.6 mW cm −2 with good stability. This study contributes to the development of inexpensive and efficient transition metal-based multifunctional electrocatalysts.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced battery technologies research · Nanomaterials for catalytic reactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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