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Self-Interconnected Porous Networks of NiCo Disulfide as Efficient Bifunctional Electrocatalysts for Overall Water Splitting.
ACS Appl Mater Interfaces 2018; 10(33):27723-27733AA

Abstract

Electrochemical splitting of water has been viewed as a highly efficient technique to produce clean hydrogen and oxygen energy. However, designing inexpensive multifunctional electrocatalysts with high performance is a great challenge. Here, a unique three-dimensional catalyst of self-interconnected porous Ni-Co disulfide networks grown on carbon cloth [(Ni0.33Co0.67)S2 nanowires (NWs)/CC] was prepared by a facile hydrothermal method coupled with further low-temperature sulfuration strategy. As a bifunctional electrocatalyst, (Ni0.33Co0.67)S2 NWs/CC exhibits a remarkable activity to catalyze both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). To drive a current density of 100 mA cm-2, (Ni0.33Co0.67)S2 NWs/CC needs the overpotentials of 156 mV in 0.5 M H2SO4 solution and 334 mV in 1.0 M KOH solution for HER, respectively. Moreover, when used as a catalyst of OER, (Ni0.33Co0.67)S2 NWs/CC needs an overpotential of 295 mV to produce a current density of 100 mA cm-2. The excellent electrochemical properties are mainly attributed to the synergetic catalysis of a Ni-Co-based bimetallic disulfide, the porous network structure, and the high conduction of CC. Moreover, the two-electrode alkaline water-splitting system constructed by (Ni0.33Co0.67)S2 NWs/CC only needs a low cell voltage of 1.57 V to approach 10 mA cm-2. This work offers more new insights for the design and preparation of the non-noble metal catalysts based on transition metal sulfides with excellent electrocatalytic performance in overall water splitting.

Authors+Show Affiliations

School of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , People's Republic of China.School of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , People's Republic of China.School of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , People's Republic of China.School of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , People's Republic of China.School of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , People's Republic of China.Cengong County Agriculture Bureau , Cengong , Guizhou 557800 , People's Republic of China.School of Chemistry and Chemical Engineering , Chongqing University , Chongqing 400044 , People's Republic of China.School of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , People's Republic of China.School of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , People's Republic of China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30051715

Citation

Zhang, Qing, et al. "Self-Interconnected Porous Networks of NiCo Disulfide as Efficient Bifunctional Electrocatalysts for Overall Water Splitting." ACS Applied Materials & Interfaces, vol. 10, no. 33, 2018, pp. 27723-27733.
Zhang Q, Ye C, Li XL, et al. Self-Interconnected Porous Networks of NiCo Disulfide as Efficient Bifunctional Electrocatalysts for Overall Water Splitting. ACS Appl Mater Interfaces. 2018;10(33):27723-27733.
Zhang, Q., Ye, C., Li, X. L., Deng, Y. H., Tao, B. X., Xiao, W., ... Luo, H. Q. (2018). Self-Interconnected Porous Networks of NiCo Disulfide as Efficient Bifunctional Electrocatalysts for Overall Water Splitting. ACS Applied Materials & Interfaces, 10(33), pp. 27723-27733. doi:10.1021/acsami.8b04386.
Zhang Q, et al. Self-Interconnected Porous Networks of NiCo Disulfide as Efficient Bifunctional Electrocatalysts for Overall Water Splitting. ACS Appl Mater Interfaces. 2018 Aug 22;10(33):27723-27733. PubMed PMID: 30051715.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Self-Interconnected Porous Networks of NiCo Disulfide as Efficient Bifunctional Electrocatalysts for Overall Water Splitting. AU - Zhang,Qing, AU - Ye,Cui, AU - Li,Xiao Lin, AU - Deng,Yang Hui, AU - Tao,Bai Xiang, AU - Xiao,Wei, AU - Li,Ling Jie, AU - Li,Nian Bing, AU - Luo,Hong Qun, Y1 - 2018/08/10/ PY - 2018/7/28/pubmed PY - 2018/7/28/medline PY - 2018/7/28/entrez KW - Ni−Co disulfide KW - hydrothermal method KW - low-temperature sulfuration strategy KW - overall water splitting KW - transition metal sulfide SP - 27723 EP - 27733 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 10 IS - 33 N2 - Electrochemical splitting of water has been viewed as a highly efficient technique to produce clean hydrogen and oxygen energy. However, designing inexpensive multifunctional electrocatalysts with high performance is a great challenge. Here, a unique three-dimensional catalyst of self-interconnected porous Ni-Co disulfide networks grown on carbon cloth [(Ni0.33Co0.67)S2 nanowires (NWs)/CC] was prepared by a facile hydrothermal method coupled with further low-temperature sulfuration strategy. As a bifunctional electrocatalyst, (Ni0.33Co0.67)S2 NWs/CC exhibits a remarkable activity to catalyze both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). To drive a current density of 100 mA cm-2, (Ni0.33Co0.67)S2 NWs/CC needs the overpotentials of 156 mV in 0.5 M H2SO4 solution and 334 mV in 1.0 M KOH solution for HER, respectively. Moreover, when used as a catalyst of OER, (Ni0.33Co0.67)S2 NWs/CC needs an overpotential of 295 mV to produce a current density of 100 mA cm-2. The excellent electrochemical properties are mainly attributed to the synergetic catalysis of a Ni-Co-based bimetallic disulfide, the porous network structure, and the high conduction of CC. Moreover, the two-electrode alkaline water-splitting system constructed by (Ni0.33Co0.67)S2 NWs/CC only needs a low cell voltage of 1.57 V to approach 10 mA cm-2. This work offers more new insights for the design and preparation of the non-noble metal catalysts based on transition metal sulfides with excellent electrocatalytic performance in overall water splitting. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/30051715/Self_Interconnected_Porous_Networks_of_NiCo_Disulfide_as_Efficient_Bifunctional_Electrocatalysts_for_Overall_Water_Splitting_ L2 - https://dx.doi.org/10.1021/acsami.8b04386 DB - PRIME DP - Unbound Medicine ER -