1.太原理工大学新型碳材料研究院,山西 太原 030600
2.气体能源清洁高效利用山西省重点实验室,山西 太原 030024
原荷峰(1989—),女,博士研究生,1375619356@qq.com
王孝广(1982—),男,博士,教授,wangxiaog1982@163.com
收稿:2020-05-18,
修回:2020-07-20,
网络首发:2020-12-17,
纸质出版:2020-12-05
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原荷峰, 马自在, 王淑敏, 李晋平, 王孝广. 富氧空位Co3O4纳米线的制备及其电解水性能研究[J]. 化工学报, 2020, 71(12): 5831-5841 DOI: 10.11949/0438-1157.20200597.
YUAN Hefeng, MA Zizai, WANG Shumin, LI Jinping, WANG Xiaoguang. Engineering oxygen vacancy-rich Co3O4 nanowire as high-efficiency and durable bifunctional electrocatalyst for overall alkaline water splitting[J]. CIESC Journal, 2020, 71(12): 5831-5841 DOI: 10.11949/0438-1157.20200597.
原荷峰, 马自在, 王淑敏, 李晋平, 王孝广. 富氧空位Co3O4纳米线的制备及其电解水性能研究[J]. 化工学报, 2020, 71(12): 5831-5841 DOI: 10.11949/0438-1157.20200597. DOI:
YUAN Hefeng, MA Zizai, WANG Shumin, LI Jinping, WANG Xiaoguang. Engineering oxygen vacancy-rich Co3O4 nanowire as high-efficiency and durable bifunctional electrocatalyst for overall alkaline water splitting[J]. CIESC Journal, 2020, 71(12): 5831-5841 DOI: 10.11949/0438-1157.20200597. DOI:
在室温下利用NaBH
4
溶液还原Co
3
O
4
纳米线获得富含氧空位(V
O
)的三维自支撑纳米线阵列用作全水解电催化剂,其中NaBH
4
处理10 min的Co
3
O
4
/NF在碱性介质中对析氧反应(OER)和析氢反应(HER)表现出很高的活性,在10 mA·cm
-2
电流密度下分别仅需240和132 mV的过电位。V
O
-Co
3
O
4
/NF同时作为阴极和阳极电催化剂时,在10 mA·cm
-2
下电解水槽电压仅为1.63 V,其耐久性可达60 h以上。该工作为富含氧空位结构的过渡金属氧化物双功能电催化剂的制备提供了新的方法和思路。
A novel kind of vacancy-rich nanowire arrays were prepared by reducing rough Co
3
O
4
nanowires with NaBH
4
solution on 3D nickel foam at room temperature for overall water splitting. Co
3
O
4
/NF treated by NaBH
4
for 10 min was highly active for oxygen evolution reaction (OER) and simultaneously efficient for hydrogen evolution reaction (HER) with the need of the overpotentials of 240 and 132 mV to drive 10 mA·cm
-2
in alkaline media
respectively. Furthermore
the electrocatalysts as both cathode and anode in a two-electrode system presented excellent durability for over 60 h at 10 mA·cm
-2
maintaining the cell voltage of merely 1.63 V. This work provides new methods and ideas for the preparation of transition metal oxide bifunctional electrocatalysts rich in oxygen vacancies.
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