Deep eutectic solvent strategy enables an octahedral Ni–Co precursor for creating high-performance NiCo2O4 catalyst toward oxygen evolution reaction
Deep eutectic solvents (DESs) have gained much attention in the fabrication of advanced nanoelectrocatalysts due to their amazing template function. However, their stabilizing function for easily hydrolyzed inorganic nanomaterials is rarely studied. Here, a DES-mediated strategy was reported to synt...
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| Format: | Article |
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KeAi Communications Co., Ltd.
2022-12-01
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| Series: | Green Energy & Environment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468025721000170 |
| _version_ | 1811265874266423296 |
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| author | Chenyun Zhang Bingwei Xin Tingting Chen Hao Ying Zhonghao Li Jingcheng Hao |
| author_facet | Chenyun Zhang Bingwei Xin Tingting Chen Hao Ying Zhonghao Li Jingcheng Hao |
| author_sort | Chenyun Zhang |
| collection | DOAJ |
| description | Deep eutectic solvents (DESs) have gained much attention in the fabrication of advanced nanoelectrocatalysts due to their amazing template function. However, their stabilizing function for easily hydrolyzed inorganic nanomaterials is rarely studied. Here, a DES-mediated strategy was reported to synthesize octahedral Ni–Co precursor (NiCo–NH3 complex), which could be directly transformed into NiCo2O4 nanooctahedrons after thermal decomposition. The NiCo–NH3 precursor in octahedral shape was achieved with the DES-mediated crystallization in the choline chloride (ChCl)/glycerol. The ChCl/glycerol DES not only tailored the morphology of the as-prepared precursor by template effect but also inhibited its hydrolysis, ensuring the successful fabrication of octahedral NiCo–NH3 complex precursor with high yield. The NiCo–NH3 complex precursor was converted to well-defined NiCo2O4 nanooctahedrons, where the calcination temperature and time were explored in detail. It revealed that DES could participate in the conversion process to control the morphology of calcination product. The resultant NiCo2O4 nanooctahedrons demonstrated excellent electroactivity and remarkable durability for oxygen evolution reaction (OER). The present strategy not only offers an efficient OER electrocatalyst but also enriches the approaches of DESs in designing advanced nanocatalysts. |
| first_indexed | 2024-04-12T20:31:48Z |
| format | Article |
| id | doaj.art-b33f739150b543b6b091703068284be2 |
| institution | Directory Open Access Journal |
| issn | 2468-0257 |
| language | English |
| last_indexed | 2024-04-12T20:31:48Z |
| publishDate | 2022-12-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Green Energy & Environment |
| spelling | doaj.art-b33f739150b543b6b091703068284be22022-12-22T03:17:43ZengKeAi Communications Co., Ltd.Green Energy & Environment2468-02572022-12-017612171227Deep eutectic solvent strategy enables an octahedral Ni–Co precursor for creating high-performance NiCo2O4 catalyst toward oxygen evolution reactionChenyun Zhang0Bingwei Xin1Tingting Chen2Hao Ying3Zhonghao Li4Jingcheng Hao5Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, 250100, ChinaCollege of Chemistry and Chemical Engineering, Dezhou University, Dezhou, 253023, ChinaKey Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, 250100, ChinaKey Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, 250100, ChinaKey Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, 250100, China; Corresponding author.Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, 250100, ChinaDeep eutectic solvents (DESs) have gained much attention in the fabrication of advanced nanoelectrocatalysts due to their amazing template function. However, their stabilizing function for easily hydrolyzed inorganic nanomaterials is rarely studied. Here, a DES-mediated strategy was reported to synthesize octahedral Ni–Co precursor (NiCo–NH3 complex), which could be directly transformed into NiCo2O4 nanooctahedrons after thermal decomposition. The NiCo–NH3 precursor in octahedral shape was achieved with the DES-mediated crystallization in the choline chloride (ChCl)/glycerol. The ChCl/glycerol DES not only tailored the morphology of the as-prepared precursor by template effect but also inhibited its hydrolysis, ensuring the successful fabrication of octahedral NiCo–NH3 complex precursor with high yield. The NiCo–NH3 complex precursor was converted to well-defined NiCo2O4 nanooctahedrons, where the calcination temperature and time were explored in detail. It revealed that DES could participate in the conversion process to control the morphology of calcination product. The resultant NiCo2O4 nanooctahedrons demonstrated excellent electroactivity and remarkable durability for oxygen evolution reaction (OER). The present strategy not only offers an efficient OER electrocatalyst but also enriches the approaches of DESs in designing advanced nanocatalysts.http://www.sciencedirect.com/science/article/pii/S2468025721000170Deep eutectic solventsCholine chlorideGlycerolOxygen evolution reaction |
| spellingShingle | Chenyun Zhang Bingwei Xin Tingting Chen Hao Ying Zhonghao Li Jingcheng Hao Deep eutectic solvent strategy enables an octahedral Ni–Co precursor for creating high-performance NiCo2O4 catalyst toward oxygen evolution reaction Green Energy & Environment Deep eutectic solvents Choline chloride Glycerol Oxygen evolution reaction |
| title | Deep eutectic solvent strategy enables an octahedral Ni–Co precursor for creating high-performance NiCo2O4 catalyst toward oxygen evolution reaction |
| title_full | Deep eutectic solvent strategy enables an octahedral Ni–Co precursor for creating high-performance NiCo2O4 catalyst toward oxygen evolution reaction |
| title_fullStr | Deep eutectic solvent strategy enables an octahedral Ni–Co precursor for creating high-performance NiCo2O4 catalyst toward oxygen evolution reaction |
| title_full_unstemmed | Deep eutectic solvent strategy enables an octahedral Ni–Co precursor for creating high-performance NiCo2O4 catalyst toward oxygen evolution reaction |
| title_short | Deep eutectic solvent strategy enables an octahedral Ni–Co precursor for creating high-performance NiCo2O4 catalyst toward oxygen evolution reaction |
| title_sort | deep eutectic solvent strategy enables an octahedral ni co precursor for creating high performance nico2o4 catalyst toward oxygen evolution reaction |
| topic | Deep eutectic solvents Choline chloride Glycerol Oxygen evolution reaction |
| url | http://www.sciencedirect.com/science/article/pii/S2468025721000170 |
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