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Triple-Confined Well-Dispersed Biactive NiCo2S4/Ni0.96S on Graphene Aerogel for High-Efficiency Lithium Storage.
ACS Appl Mater Interfaces 2016; 8(48):32853-32861AA

Abstract

Layered double hydroxides (LDHs), also known as hydrotalcite-like anionic clay compounds, have attracted increasing interest in electrochemical energy storage, in the main form of LDH precursor-derived transition metal oxides (TMOs). One typical approach to improve cycling stability of the LDH-derived TMOs is to introduce one- and two-dimensional conductive carbonaceous supports, such as carbon nanotubes and graphene. We herein demonstrate an effective approach to improve the electrochemical performances of well-dispersed biactive NiCo2S4/Ni0.96S as anode nanomaterials for lithium-ion batteries (LIBs), by introducing a three-dimensional graphene aerogel (3DGA) support. The resultant 3DGA supported NiCo2S4/Ni0.96S (3DGA/NCS) composite, obtained by sulfuration of NiCo-layered double hydroxide (NiCo-LDH) precursor in situ grown on the 3DGA support (3DGA/NiCo-LDH). Electrochemical tests show that the 3DGA/NCS composite indeed delivers the greatly enhanced electrochemical performances compared with the NiCo2S4/Ni0.96S counterpart on two-dimensional graphene aerogel, i.e., a high reversible capacity of 965 mA h g-1 after 200 cycles at 100 mA g-1 and especially a superlong cycling stability of 620 mA h g-1 after 800 cycles at 1 A g-1. The enhancements could be ascribed to the compositional and structural advantages of boosting electrochemical performances: (i) well-dispersed NiCo2S4/Ni0.96S nanoparticles with interfacial nanodomains resulting from both the dual surface confinements of the 3DGA support and the crystallographic confinement of NiCo-well-arranged LDH crystalline layer, (ii) an appropriate specific surface area and a wide pore size distribution of mesopores and macropores, and (iii) highly conductive 3DGA support that is measured experimentally by using electrochemical impedance spectra to underlie the enhancement. Our results demonstrate that the tunable LDH precursor-derived synthesis route may be extended to prepare various transition metal sulfides and even transition metal phosphides for energy storage with the aid of tunable cationic type and molar ratio.

Authors+Show Affiliations

State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology , Beijing 100029, China.State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology , Beijing 100029, China.State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology , Beijing 100029, China.State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology , Beijing 100029, China.State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology , Beijing 100029, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27934161

Citation

Bai, Daxun, et al. "Triple-Confined Well-Dispersed Biactive NiCo2S4/Ni0.96S On Graphene Aerogel for High-Efficiency Lithium Storage." ACS Applied Materials & Interfaces, vol. 8, no. 48, 2016, pp. 32853-32861.
Bai D, Wang F, Lv J, et al. Triple-Confined Well-Dispersed Biactive NiCo2S4/Ni0.96S on Graphene Aerogel for High-Efficiency Lithium Storage. ACS Appl Mater Interfaces. 2016;8(48):32853-32861.
Bai, D., Wang, F., Lv, J., Zhang, F., & Xu, S. (2016). Triple-Confined Well-Dispersed Biactive NiCo2S4/Ni0.96S on Graphene Aerogel for High-Efficiency Lithium Storage. ACS Applied Materials & Interfaces, 8(48), pp. 32853-32861.
Bai D, et al. Triple-Confined Well-Dispersed Biactive NiCo2S4/Ni0.96S On Graphene Aerogel for High-Efficiency Lithium Storage. ACS Appl Mater Interfaces. 2016 Dec 7;8(48):32853-32861. PubMed PMID: 27934161.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Triple-Confined Well-Dispersed Biactive NiCo2S4/Ni0.96S on Graphene Aerogel for High-Efficiency Lithium Storage. AU - Bai,Daxun, AU - Wang,Fen, AU - Lv,Jinmeng, AU - Zhang,Fazhi, AU - Xu,Sailong, Y1 - 2016/11/22/ PY - 2016/12/10/entrez PY - 2016/12/10/pubmed PY - 2016/12/10/medline KW - graphene aerogel KW - layered double hydroxide precursor KW - lithium-ion batteries KW - transition metal sulfide KW - triple confinement effects SP - 32853 EP - 32861 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 8 IS - 48 N2 - Layered double hydroxides (LDHs), also known as hydrotalcite-like anionic clay compounds, have attracted increasing interest in electrochemical energy storage, in the main form of LDH precursor-derived transition metal oxides (TMOs). One typical approach to improve cycling stability of the LDH-derived TMOs is to introduce one- and two-dimensional conductive carbonaceous supports, such as carbon nanotubes and graphene. We herein demonstrate an effective approach to improve the electrochemical performances of well-dispersed biactive NiCo2S4/Ni0.96S as anode nanomaterials for lithium-ion batteries (LIBs), by introducing a three-dimensional graphene aerogel (3DGA) support. The resultant 3DGA supported NiCo2S4/Ni0.96S (3DGA/NCS) composite, obtained by sulfuration of NiCo-layered double hydroxide (NiCo-LDH) precursor in situ grown on the 3DGA support (3DGA/NiCo-LDH). Electrochemical tests show that the 3DGA/NCS composite indeed delivers the greatly enhanced electrochemical performances compared with the NiCo2S4/Ni0.96S counterpart on two-dimensional graphene aerogel, i.e., a high reversible capacity of 965 mA h g-1 after 200 cycles at 100 mA g-1 and especially a superlong cycling stability of 620 mA h g-1 after 800 cycles at 1 A g-1. The enhancements could be ascribed to the compositional and structural advantages of boosting electrochemical performances: (i) well-dispersed NiCo2S4/Ni0.96S nanoparticles with interfacial nanodomains resulting from both the dual surface confinements of the 3DGA support and the crystallographic confinement of NiCo-well-arranged LDH crystalline layer, (ii) an appropriate specific surface area and a wide pore size distribution of mesopores and macropores, and (iii) highly conductive 3DGA support that is measured experimentally by using electrochemical impedance spectra to underlie the enhancement. Our results demonstrate that the tunable LDH precursor-derived synthesis route may be extended to prepare various transition metal sulfides and even transition metal phosphides for energy storage with the aid of tunable cationic type and molar ratio. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/27934161/Triple_Confined_Well_Dispersed_Biactive_NiCo2S4/Ni0_96S_on_Graphene_Aerogel_for_High_Efficiency_Lithium_Storage_ L2 - https://dx.doi.org/10.1021/acsami.6b11389 DB - PRIME DP - Unbound Medicine ER -