Issue 28, 2024

Electronically modulated bimetallic telluride nanodendrites atop 2D nanosheets using a vanadium dopant enabling a bifunctional electrocatalyst for overall water splitting

Abstract

Developing cost-effective, efficient, and durable bifunctional non-noble metal electrocatalysts is crucial for addressing the energy crisis. Electronic modulation of intrinsic materials by vanadium doping enhances catalytic activity; thus, unique nanodendrites over 2D nanosheets of vanadium-doped CoTe2/MoTe2 on carbon cloth (V-CoTe2/MoTe2@CC) are engineered by hydrothermal treatment and subsequent tellurization. V dopants modulate the electronic environment of CoTe2/MoTe2, increasing binding energies, decreasing the energy barrier, and creating multiple active sites at elevated lattices to accelerate the reaction kinetics for water splitting. As a result, V-CoTe2/MoTe2@CC shows outstanding catalytic performance for the HER (η10 = 79 mV), OER (η10 = 249 mV), and overall water splitting requiring 1.51 V to deliver 10 mA cm−2. V-CoTe2/MoTe2@CC demonstrates impressive durability for up to 100 h of continuous operation, signifying its potential practical application. This work establishes V-CoTe2/MoTe2@CC as an effective bifunctional electrocatalyst and also introduces a salient approach to tuning electronic structures for high-performance electrocatalysts.

Graphical abstract: Electronically modulated bimetallic telluride nanodendrites atop 2D nanosheets using a vanadium dopant enabling a bifunctional electrocatalyst for overall water splitting

Supplementary files

Article information

Article type
Paper
Submitted
22 Mar 2024
Accepted
06 Jun 2024
First published
19 Jun 2024

J. Mater. Chem. A, 2024,12, 17544-17556

Electronically modulated bimetallic telluride nanodendrites atop 2D nanosheets using a vanadium dopant enabling a bifunctional electrocatalyst for overall water splitting

I. Pathak, A. Muthurasu, D. Acharya, K. Chhetri, B. Dahal, Y. R. Rosyara, T. Kim, T. H. Ko and H. Y. Kim, J. Mater. Chem. A, 2024, 12, 17544 DOI: 10.1039/D4TA01929F

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