Abnormal Effects of Cations (Li+, Na+, and K+) on Photoelectrochemical and Electrocatalytic Water Splitting

	Abnormal Effects of Cations (Li+, Na+, and K+) on Photoelectrochemical and Electrocatalytic Water Splitting
	Ding, Chunmei; Zhou, Xin; Shi, Jingying; Yan, Pengli; Wang, Zhiliang; Liu, Guiji; Li, Can
刊名	journal of physical chemistry b
	2015-02-26
卷号	119 期号:8 页码:3560-3566
英文摘要	the electrodeelectrolyte interface chemistry is highly important for photoelectrochemical (pec) and electrocatalytic water splitting where cations in the electrolyte are often crucial. however, the roles of cations in an electrolyte are much debated and not well-understood. this work reports that the pec and electrocatalytic water oxidation (wo) activities in basic electrolytes with different cations follow an unexpected trend (li+ > k+ > na+) especially for long-term reaction. such an abnormal order of activity is found to be the balance effect of two factors: the distinct extents of the weakening of o-h bond on electrode surface after interacting with cations in different electrolytes and the different rates of oxygen reduction reaction (orr) which turns out to be dominant. li+ not only brings the most significant decrease of oh bond strength but also is most effective for avoiding back reaction, while na+ shows the most detrimental effect on wo because of orr. our results provide important insight into the roles of cations in wo and demonstrate a new strategy of tailoring the electrode-electrolyte interface via judicious choice of cations in electrolyte for more efficient pec and electrocatalytic water splitting.
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, physical
研究领域[WOS]	chemistry
关键词[WOS]	sensitized solar-cells ; hydrogen-production ; visible-light ; oxidation catalysts ; bismuth vanadate ; photoanodes ; electrodes ; interfaces ; reduction ; evolution
收录类别	SCI
语种	英语
WOS记录号	WOS:000350329000023
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/146038]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Ding, Chunmei,Zhou, Xin,Shi, Jingying,et al. Abnormal Effects of Cations (Li+, Na+, and K+) on Photoelectrochemical and Electrocatalytic Water Splitting[J]. journal of physical chemistry b,2015,119(8):3560-3566.
APA	Ding, Chunmei.,Zhou, Xin.,Shi, Jingying.,Yan, Pengli.,Wang, Zhiliang.,...&Li, Can.(2015).Abnormal Effects of Cations (Li+, Na+, and K+) on Photoelectrochemical and Electrocatalytic Water Splitting.journal of physical chemistry b,119(8),3560-3566.
MLA	Ding, Chunmei,et al."Abnormal Effects of Cations (Li+, Na+, and K+) on Photoelectrochemical and Electrocatalytic Water Splitting".journal of physical chemistry b 119.8(2015):3560-3566.