Natural multi-channeled wood frameworks for electrocatalytic hydrogen evolution

被引：59
作者：
Hui, Bin [1 ]
Zhang, Kewei [1 ]
Xia, Yanzhi [1 ]
Zhou, Chengfeng [1 ]
机构：
[1] Qingdao Univ, Shandong Collaborat Innovat Ctr Marine Biobased F, State Key Lab Biofibers & Ecotext, Inst Marine Biobased Mat,Sch Mat Sci & Engn, Qingdao 266071, Shandong, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2020年 / 330卷
基金：
中国国家自然科学基金;
关键词：
Natural wood channels; Amorphous NiP alloy; Alkaline; Hydrogen evolution reaction; HIGH-PERFORMANCE; EFFICIENT; DECOMPOSITION; NICKEL;
D O I：
10.1016/j.electacta.2019.135274
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Developing stable and efficient nonprecious electrocatalysts for hydrogen evolution reaction (HER) is desirable but remains challenging. In this work, a natural wood-based 3D framework was designed to load an amorphous NiP alloy using a simple electroless plating method. The NiP alloy anchored in Poplar wood exhibited the highest HER activity in alkaline solution, with a low overpotential of 83 V at a current density of 10 mA cm(-2) and a small Tafel slope of 73.2 mV dec(-1) compared to the other channeled woods (Faxinus mandshurica wood and Larch wood). This self-supported monolithic NiP/Poplar wood sustained a high current density of similar to 1200 mA cm(-2) for 36 h. These superior electrocatalytic performances greatly depend on both the unique multi-channeled wood structures and the firm interfacial combination between a wood and amorphous NiP alloy. This work offers a new avenue for the design and optimization of transition metal phosphides and natural multi-channeled wood for high electrocatalytic activity and superior cycling durability towards hydrogen generation. (C) 2019 Elsevier Ltd. All rights reserved.
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页数：9
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