{Reference Type}: Journal Article {Title}: Ni(OH)2 nanoparticles encapsulated in conductive nanowire array for high-performance alkaline seawater oxidation {Author}: Zhang, Longcheng; Wang, Jiaqian; Liu, Pengyu; Liang, Jie; Luo, Yongsong; Cui, Guanwei; Tang, Bo; Liu, Qian; Yan, Xuedong; Hao, Haigang; Liu, Meiling; Gao, Rui; Xuping, Sun {Journal}: Nano Research {ISBN/ISSN}: 1998-0124 {Year}: 2022 {Volume}: 15 {Issue}: 7 {Pages}: 6084-6090 {DOI}: 10.1007/s12274-022-4391-6 {Keywords}: electrocatalysis {Keywords}: Ni(OH)2 nanoparticles {Keywords}: tetracyanoquinodimethane (TCNQ) nanoarray {Keywords}: seawater splitting {Abstract}: Design and development of high-efficiency and durable oxygen evolution reaction (OER) electrocatalysts is crucial for hydrogen production from seawater splitting. Herein, we report the in situ electrochemical conversion of a nanoarray of Ni(TCNQ)2 (TCNQ = tetracyanoquinodimethane) on graphite paper into Ni(OH)2 nanoparticles confined in a conductive TCNQ nanoarray (Ni(OH)2-TCNQ/GP) by anode oxidation. The Ni(OH)2-TCNQ/GP exhibits high OER performance and demands overpotentials of 340 and 382 mV to deliver 100 mA·cm−2 in alkaline freshwater and alkaline seawater, respectively. Meanwhile, the Ni(OH)2-TCNQ/GP also demonstrates steady long-term electrochemical durability for at least 80 h under alkaline seawater. {URL}: https://www.sciopen.com/article/10.1007/s12274-022-4391-6 {Language}: en