Author
Xingyu Zhao
Bio: Xingyu Zhao is an academic researcher from Harbin University of Science and Technology. The author has contributed to research in topics: Bifunctional & Electrocatalyst. The author has an hindex of 2, co-authored 2 publications receiving 28 citations.
Topics: Bifunctional, Electrocatalyst, Water splitting
Papers
More filters
TL;DR: In this article, a detailed review of electrode materials and energy storage mechanisms in aqueous ZIBs is presented, where specific attention is concentrated on the key issues and recent advances in design strategies for optimizing electrochemical performance.
58 citations
TL;DR: A powerful combined wet chemical method to farbricate novel binder-free NiFe layered double hydroxide@Ni3S2 (NiFe LDH@Ni 3S2) heterostructure as efficient bifunctional electrocatalyst for overall water splitting.
Abstract: The tailored construction of non-noble metal bifunctional electrocatalysts for high-efficiency oxygen/hydrogen evolution reactions (OER/HER) is vital for the development of electrochemical energy conversion. Herein, we report a powerful combined wet chemical method to fabricate a novel binder-free NiFe layered double hydroxide@Ni3S2 (NiFe LDH@Ni3S2) heterostructure as an efficient bifunctional electrocatalyst for overall water splitting. The hydrothermal-synthesized NiFe LDH nanosheets are uniformly coated on the Ni3S2 nanosheet skeleton forming 3D porous heterostructure arrays. By virtue of its synergistic advantages, including its binder-free characteristics, increased catalysis sites and structural stability, the as-obtained NiFe LDH@Ni3S2/NF electrode exhibits low overpotentials of 184 and 271 mV at 20 mA cm-2 for HER and OER in 1 M KOH, respectively. Notably, a low operation potential of 1.74 V at a current density of 20 mA cm-2 is achieved for overall water splitting with a stable cycling life. In addition, the intimate composite structure and sensitive interface of NiFe LDH@Ni3S2 are responsible for the good electrocatalytic activity with a low Tafel slope, fast reaction kinetics and high stability. The versatile fabrication protocol and heterostructure interface engineering provide a new way to construct other bifunctional and cost-effective electrocatalysts for electrocatalysis.
37 citations
Cited by
More filters
TL;DR: In this paper, an interface-regulated strategy triggered the generation of abundant oxygen vacancies and more catalytically active sites on the surface of CoP/CeO2 heterostructure.
151 citations
TL;DR: A comprehensive overview of Ni-based layered double hydroxides (LDHs) for oxygen evolution reaction (OER) is provided in this paper, where fabrication strategies and in situ characterization are discussed.
117 citations
01 Jun 2017
TL;DR: Wang et al. as mentioned in this paper won the Third Prize ( Category: Innovation) in the "Challenge Cup" National Competition -Hong Kong Regional Final, Hong Kong University Student Innovation and Entrepreneurship Competition 2017 organized by the Hong Kong New Generation Cultural Association.
Abstract: Won the Third Prize (Category: Innovation ) in the "Challenge Cup" National Competition – Hong Kong Regional Final, Hong Kong University Student Innovation and Entrepreneurship Competition 2017 organized by the Hong Kong New Generation Cultural Association.
80 citations
TL;DR: In this article, a 3D core-shell Co-C@NiFe LDH nanofibrous catalyst with high conductivity, large surface area and strong electron transfer was proposed for oxygen evolution reaction (OER).
60 citations
59 citations