Single-Atom and Bimetallic Nanoalloy Supported on Nanotubes as a Bifunctional Electrocatalyst for Ultrahigh-Current-Density Overall Water Splitting

ACS Catalysis ◽  
2022 ◽  
pp. 1167-1179
Author(s):  
Wenhui Luo ◽  
Yang Wang ◽  
Liuxiong Luo ◽  
Shen Gong ◽  
Mengni Wei ◽  
...  
Keyword(s):  
Water Splitting ◽  
Current Density ◽  
Single Atom ◽  
Bifunctional Electrocatalyst ◽  
Overall Water Splitting

High-performance overall water splitting based on amorphous iron doped cobalt tungstate via facile co-precipitation

2021 ◽  
Vol 9 (15) ◽  
pp. 9753-9760
Author(s):  
Jin Wu ◽  
Renjie Xie ◽  
Xiangchen Hu ◽  
Zhiwei Nie ◽  
Yanuo Shi ◽  
...  
Keyword(s):  
Water Splitting ◽  
Current Density ◽  
High Performance ◽  
Amorphous Iron ◽  
Bifunctional Electrocatalyst ◽  
Overall Water Splitting ◽  
Iron Doped ◽  
Cobalt Tungstate ◽  
Co Precipitation ◽  
A Current

The as-prepared amorphous Fe-doped CoWO4 bifunctional electrocatalyst shows a low overpotential of 259 and 118 mV to reach a current density of 10 mA cm−2 for the OER and HER in 1 M KOH, respectively.

scholarly journals Two-Dimensional Layered NiLiP2S6 Crystals as an Efficient Bifunctional Electrocatalyst for Overall Water Splitting

Catalysts ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 786
Author(s):  
Song-Jeng Huang ◽  
Adil Muneeb ◽  
Palani Sabhapathy ◽  
Khasim Saheb Bayikadi ◽  
Tahir Murtaza ◽  
...  
Keyword(s):  
Water Splitting ◽  
Current Density ◽  
Alkaline Media ◽  
Intrinsic Activity ◽  
Tafel Slope ◽  
Bifunctional Electrocatalyst ◽  
Long Term Stability ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Earth Abundant

The quest of earth-abundant bifunctional electrocatalysts for highly efficient oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is essential for clean and renewable energy systems. Herein, directed by the experimental analysis, we demonstrate layered nickel lithium phosphosulfide (NiLiP2S6) crystal as a highly efficient water-splitting catalyst in alkaline media. With strained lattice due to stacked layers as observed by TEM and electronic structure analysis performed by XPS showed mixed Ni2+,3+ oxidation states induced by addition of Li as a cation, NiLiP2S6 displays excellent OER (current density of 10 mA cm–2 showed an overpotential of 303 mV vs. RHE and a Tafel slope of 114 mV dec–1) and HER activity (current density of −10 mA cm–2 showed an overpotential of 184 mV vs. RHE and a Tafel slope of 94.5 mV dec–1). Finally, an alkaline media was employed to demonstrate the overall water splitting using NiLiP2S6 as both the anode and the cathode, which attained a 50 mA cm−2 current density at 1.68 V. This bimetallic phosphosulfide, together with long-term stability and enhanced intrinsic activity, shows enormous potential in water splitting applications.

scholarly journals A structurally versatile nickel phosphite acting as a robust bifunctional electrocatalyst for overall water splitting

2018 ◽  
Vol 11 (5) ◽  
pp. 1287-1298 ◽  
Author(s):  
Prashanth W. Menezes ◽  
Chakadola Panda ◽  
Stefan Loos ◽  
Florian Bunschei-Bruns ◽  
Carsten Walter ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Bifunctional Electrocatalyst ◽  
Overall Water Splitting

The mechanistically distinct and synergistic role of phosphite anions in hydrogen evolution and nickel cations in oxygen evolution have been uncovered for active and durable overall water splitting catalysis in nickel phosphite.

Industrially promising IrNi-FeNi3 hybrid nanosheets for overall water splitting catalysis at large current density

2021 ◽  
Vol 286 ◽  
pp. 119881
Author(s):  
Yamei Wang ◽  
Guangfu Qian ◽  
Qinglian Xu ◽  
Hao Zhang ◽  
Fang Shen ◽  
...  
Keyword(s):  
Water Splitting ◽  
Current Density ◽  
Overall Water Splitting ◽  
Large Current ◽  
Large Current Density
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