英文论文
-
文献类型
-
Journal article (JA)
-
题名
-
A Nd-doped NiCo spinel dual functional catalyst for both oxygen reduction reactions and oxygen evolution reactions: Enhanced activity through surface reconstruction
-
作者
-
Li, Tao; Bo, Lili; Guan, Xiaolin; Jiang, Kun; Liu, Yun-Quan; Tong, Jinhui
-
作者单位
-
[Guan, Xiaolin; Tong, Jinhui] Northwest Normal Univ, Coll Chem & Chem Engn, Key Lab Ecoenvironm Polymer Mat Gansu Prov, Key Lab Ecofunct Polymer Mat,Minist Educ, Lanzhou 730070, Gansu, Peoples R China. [Li, Tao; Jiang, Kun; Liu, Yun-Quan] Xiamen Univ, Coll Energy, Xiamen 361102, Peoples R China. [Li, Tao] Shaanxi Univ Technol, Coll Chem & Environm Sci, Hanzhong 723001, Peoples R China. [Bo, Lili] Gansu Agr Univ, Coll Sci, Lanzhou 730070, Gansu, Peoples R China.
-
通讯作者地址
-
Northwest Normal Univ, Coll Chem & Chem Engn, Key Lab Ecoenvironm Polymer Mat Gansu Prov, Key Lab Ecofunct Polymer Mat,Minist Educ, Lanzhou 730070, Gansu, Peoples R China.; Xiamen Univ, Coll Energy, Xiamen 361102, Peoples R China.
-
Email
-
yq_liu@xmu.edu.cn; jinhuitong@nwnu.edu.cn
-
ResearchID
-
-
ORCID
-
-
期刊名称
-
Journal of Colloid and Interface Science
-
出版社
-
ACADEMIC PRESS INC ELSEVIER SCIENCE
-
ISSN
-
0021-9797
-
出版信息
-
2025-08, 691 ():.
-
JCR
-
-
影响因子
-
-
ISBN
-
-
基金
-
National Natural Science Foundation of China [52162034, 21965032]; Fujian Province Innovation & Entrepreneurship Talents Funds [2012Z02302]
-
会议名称
-
-
会议地点
-
-
会议开始日期
-
-
会议结束日期
-
-
关键词
-
Alkaline earth metals; Barium compounds; Bioremediation; Bismuth compounds; Cobalt compounds; Indium phosphide; Neodymium alloys; Neodymium compounds; Nickel compounds; Oxygen evolution reaction; Oxygen reduction reaction; Rate constants; Semiconductor doping; Surface reactions
-
摘要
-
The design of efficient, low-cost, highly active and thermally stable electrocatalysts is critical for both oxygen reduction reactions (ORR) and oxygen evolution reactions (OER). While some spinel metal oxides exhibit good activities for either ORR or OER, a bifunctional spinel metal oxide that can provide decent activities for both ORR and OER would be most desirable. To date, rare earth metal-modified spinel oxides have not been well-studied, but they are thought to be able to boost both ORR and OER simultaneously. Hence, a Nd-doped NiCo2O4 catalyst was synthesized in this work to evaluate its potential for improving both ORR and OER reactions. We hypothesized that this catalyst would be a viable option, as the highly oxidized Co4+ (hydroxycobalt oxide) generated from surface reconstruction could be an active site for OER while Ni2+ is intrinsically an active site for ORR. Amazingly, our study revealed that the addition of Nd in spinel metal oxides was able to inhibit the formation of Co4+ at low potentials while the Ni species promoted the formation of Co4+ from Co2+, thus achieving a balance between Co2+ and Co4+ which resulted in a multi-step oxidation process of Co2+ -> Co3+ -> Co4+. In addition, by tuning the amount of Nd doped, an optimum electrocatalyst Nd0.1Ni0.9Co2O4 with excellent activities for both ORR (i.e. the half-wave potential E1/2 = 0.735 V) and OER (i.e. the overpotential at 10 mA cm-2 E10 mA.cm mV) in alkaline conditions was developed. In summary, this work may have opened a new pathway for applying spinel metal oxides as bifunctional catalysts in future commercial ORR and OER processes.
-
一级学科
-
Chemistry, Physical
-
WOS入藏号
-
WOS:001459288000001
-
EI收录号
-
20251318120881
-
DOI
-
10.1016/j.jcis.2025.137411
-
ESI
-
-
收录于
-
SCIE, EI
-
返回