TY - JOUR
T1 - Integrating CoNiSe2 Nanorod-arrays onto N-doped Sea-sponge-C Spheres for highly efficient electrocatalysis of Hydrogen Evolution Reaction
AU - Wang, Zifang
AU - Tian, Yakun
AU - Wen, Ming
AU - Wu, Qingsheng
AU - Zhu, Quanjing
AU - Fu, Yongqing (Richard)
N1 - Funding information:
This work was financially supported by the National Natural Science Foundation of China (NSFC, 22171212), Science and Technology Committee of Shanghai Municipality by China (21160710300, 19DZ2271500), International Exchange Grant through Royal Society UK and NSFC (201078).
PY - 2022/10/15
Y1 - 2022/10/15
N2 - A key issue for enhancing performance of hydrogen evolution reaction (HER) by utilizing seawater for sustainable clean energy is to develop a highly efficient, stable and economical electrocatalyst. Herein, a uniquely hierarchical nanostructure of CoNiSe2 nanorod-arrays (NRAs) integrated onto N-doped sea-sponge-carbon spheres (CoNiSe2/N-SSCSs) was designed and synthesized using successive ultrasonic spray pyrolysis (USP) and solvothermal - hydrothermal selenization (SHS) processes. Attributed to intrinsic HER activity of CoNiSe2 NRAs together with effective electron-transfer and ion-diffusion pathways of N-SSCSs, the CoNiSe2/N-SSCSs nanocomposites exhibited highly stable HER electrocatalytic performances in both alkaline electrolytes and alkaline simulated seawater. The required overpotential is as low as 88 mV with a Tafel slope of 83 mV dec−1 at 10 mA cm−2 in 1.0 M KOH, which are comparable to the electrode of commercial Pt/C (η10 = 35 mV & b = 58 mV dec−1).
AB - A key issue for enhancing performance of hydrogen evolution reaction (HER) by utilizing seawater for sustainable clean energy is to develop a highly efficient, stable and economical electrocatalyst. Herein, a uniquely hierarchical nanostructure of CoNiSe2 nanorod-arrays (NRAs) integrated onto N-doped sea-sponge-carbon spheres (CoNiSe2/N-SSCSs) was designed and synthesized using successive ultrasonic spray pyrolysis (USP) and solvothermal - hydrothermal selenization (SHS) processes. Attributed to intrinsic HER activity of CoNiSe2 NRAs together with effective electron-transfer and ion-diffusion pathways of N-SSCSs, the CoNiSe2/N-SSCSs nanocomposites exhibited highly stable HER electrocatalytic performances in both alkaline electrolytes and alkaline simulated seawater. The required overpotential is as low as 88 mV with a Tafel slope of 83 mV dec−1 at 10 mA cm−2 in 1.0 M KOH, which are comparable to the electrode of commercial Pt/C (η10 = 35 mV & b = 58 mV dec−1).
KW - CoNiSe nanorod-arrays
KW - Electrocatalysis
KW - Hydrogen evolution reaction
KW - Sea-sponge-C
KW - Seawater
UR - http://www.scopus.com/inward/record.url?scp=85131956588&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2022.137335
DO - 10.1016/j.cej.2022.137335
M3 - Article
SN - 1385-8947
VL - 446
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
IS - 4
M1 - 137335
ER -
