Morphology-controllable nanocrystal β-Ni(OH)2/NF designed by hydrothermal etching method as high-efficiency electrocatalyst for overall water splitting

Yang, Jinghe; Xu, Xiuhong; Chen, Miaomiao; Yang, Duo; Lu, Hongye; Sun, Yazhou; Shao, Chunfu; Song, Qiangqiang; Zhang, Jie; Gao, Li; Zhang, Yatao

doi:10.1016/j.jelechem.2021.115035

Cited by 35 publications

(7 citation statements)

References 55 publications

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“…The multistep chronopotentiometric curve of 60Fe/NF without iR compensation in Figure 3e reveals outstanding mass transportation and electrical conductivity of 60Fe/NF because the voltage is stable as the current density increases. [27] In order to gain a full assessment of the catalytic properties of 60Fe/NF in the OER reactions, the Faradaic efficiency of 60Fe/NF was calculated. Figure 3f shows the Faradaic efficiency of 60Fe/NF in 1 m KOH and the actual and theoretical amount of O 2 produced as a function of time (in minutes).…”

Section: Electrocatalytic Performancementioning

confidence: 99%

Ultrafast Room‐Temperature Synthesis of Large‐Scale, Low‐Cost, and Highly Active Ni─Fe Based Electrodes toward Industrialized Seawater Oxidation

Zhuo,

Liu,

Qiao

et al. 2023

Advanced Energy Materials

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It is of significance to develop an active, efficient electrocatalyst for the oxygen evolution reaction (OER) as this determines the efficiency and cost of water/seawater electrolysis. Here, a cost‐effective Ni─Fe hydroxide as a promising OER catalyst is developed by 1 min ultrafast method. The catalyst shows low OER overpotentials of 240 and 254 mV at 10 mA cm−2 in both 1 m KOH and alkaline seawater, respectively. It also exhibits excellent electrochemical stability. In situ Raman spectra and other physical characterizations prove the incorporation of Fe and the transformation of Ni(Fe)(OH)2 to Ni(Fe)OOH are responsible for the enhancement of the OER performance. Furthermore, the Ni─Fe hydroxide catalyst can be readily scaled up and synthesized within 1 min. The catalyst with a size of 2000 cm2 still remains electrochemically uniform. The alkaline electrolysis cell integrated with the Ni─Fe catalyst as the anode and commercialized porous NiMo foam as the cathode has demonstrated a current density of 200 mA cm−2 at 2.3 and 2.9 V in 6 m KOH and alkaline seawater at 60 °C, respectively. Therefore, the ultrafast synthesized, earth‐abundant Ni─Fe catalyst is scalable, economical, and highly active for OER, which is promising for industrial water/seawater splitting applications.

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Section: Electrocatalytic Performancementioning

confidence: 99%

Ultrafast Room‐Temperature Synthesis of Large‐Scale, Low‐Cost, and Highly Active Ni─Fe Based Electrodes toward Industrialized Seawater Oxidation

Zhuo,

Liu,

Qiao

et al. 2023

Advanced Energy Materials

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“…Etching is a technique that removes unwanted material parts by physical or chemical means [100]. Etching technology includes chemical etching [101,102], plasma etching [103,104], laser etching [105,106] and other etching technologies [107][108][109]. Among them, chemical etching and laser etching have been applied to prepare 1D motors.…”

Section: Othersmentioning

confidence: 99%

Recent Advances in One-Dimensional Micro/Nanomotors: Fabrication, Propulsion and Application

et al. 2022

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Due to their tiny size, autonomous motion and functionalize modifications, micro/nanomotors have shown great potential for environmental remediation, biomedicine and micro/nano-engineering. One-dimensional (1D) micro/nanomotors combine the characteristics of anisotropy and large aspect ratio of 1D materials with the advantages of functionalization and autonomous motion of micro/nanomotors for revolutionary applications. In this review, we discuss current research progress on 1D micro/nanomotors, including the fabrication methods, driving mechanisms, and recent advances in environmental remediation and biomedical applications, as well as discuss current challenges and possible solutions. With continuous attention and innovation, the advancement of 1D micro/nanomotors will pave the way for the continued development of the micro/nanomotor field.

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“…[10,11] Therefore, the development of highly active electrocatalysts to accelerate the OER process becomes a major challenge to improve the efficiency of hydrolysis. [12][13][14] Although precious metal catalysts (e.g., platinum, iridium, and ruthenium, etc.) have excellent catalytic activity, serious scarcity and high price greatly hinder their large-scale applications.…”

Section: Introductionmentioning

confidence: 99%

Construction of Non‐Precious Metal Self‐Supported Electrocatalysts for Oxygen Evolution from a Low‐Temperature Immersion Perspective

Xin

Cang

Wang

et al. 2023

The Chemical Record

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Water splitting is considered as a promising technology to solve energy shortage and environmental pollution. Since oxygen evolution reaction (OER) directly affects the efficiency of hydrogen evolution, the preparation of efficient and inexpensive OER catalysts is an urgent problem. “Low‐temperature immersion” (LTI) is expected to be a prospective strategy for electrocatalyst preparation due to its simplicity and energy‐saving advantages. However, there is almost no comprehensive overview on the progress of LTI engineering in the construction of non‐precious metal self‐supported electrocatalysts for OER. Herein, this review firstly introduces the principles and applications of LTI engineering‐assisted preparation of non‐precious metal self‐supported electrocatalysts in terms of etching and deposition. Then the mechanism of OER is analyzed from an amorphous viewpoint, and finally some perspective insights and future challenges of this method are discussed.

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Morphology-controllable nanocrystal β-Ni(OH)2/NF designed by hydrothermal etching method as high-efficiency electrocatalyst for overall water splitting

Cited by 35 publications

References 55 publications

Ultrafast Room‐Temperature Synthesis of Large‐Scale, Low‐Cost, and Highly Active Ni─Fe Based Electrodes toward Industrialized Seawater Oxidation

Ultrafast Room‐Temperature Synthesis of Large‐Scale, Low‐Cost, and Highly Active Ni─Fe Based Electrodes toward Industrialized Seawater Oxidation

Recent Advances in One-Dimensional Micro/Nanomotors: Fabrication, Propulsion and Application

Construction of Non‐Precious Metal Self‐Supported Electrocatalysts for Oxygen Evolution from a Low‐Temperature Immersion Perspective

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