Journal
ACS APPLIED ENERGY MATERIALS
Volume 3, Issue 9, Pages 9076-9082Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.0c01461
Keywords
methanol electro-oxidation; non-noble-metal catalyst; flower-like NiCo2O4; porous material; low temperature synthesis; nonsurfactant
Funding
- National Natural Science Foundation of China [51772148]
- Top-notch Academic Programs Project of Jiangsu Higher Education Institutions (TAPP) [PPZY2015B128]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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As a multifunctional spinel oxide, NiCo2O4 has been extensively applied in the field of electrochemistry. In this work, a simple liquid phase precipitation method was presented for the preparation of flower-like NiCo2O4 at a low temperature without any surfactant. The obtained flower-like NiCo2O4 with a large surface area of 110.4 m(2) g(-1)exhibits a much higher methanol electro-oxidation current of 148 mA cm(-2) at 0.6 V (vs. Hg/HgO), compared to those of Co3O4 (19.1 mA cm(-2)) and NiO (47.6 mA cm(-2)) synthesized via the same procedure. After examination by chronoamperometry at 0.6 V for 1200 s, the NiCo(2)O(4 )retains a high current density of 103 mA cm(-2). The high catalytic activity suggested the application prospect of the flower-like NiCo2O4 in the energy field and the advanced nature of the simple liquid phase precipitation method.
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