铜基析氧催化剂的原位制备及性能研究
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- 英文论文题名：In situ preparation of Cu-based catalyst and Its oxygen-evolving catalytic perfromance
- 论文作者：刘林 ; 赵强 ; 李丹丹 ; 李晋平
- 英文论文作者：Lin Liu ; Q Zhao ; J Li ; Department of Chemistry ; Taiyuan University of Technology
- 年：2016
- 作者机构：太原理工大学精细研究所;
- 论文关键词：析氧催化剂 ; 电沉积 ; 水分解 ; 原位
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十九分会：电化学材料
- 语种：中文
- 分类号：O643.36
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十九分会 ; 电化学材料
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：223k
- 原文格式：D
- 会议级别：全国
摘要
利用电解水制氢来储存太阳能是未来能源发展的一大趋势。水的阳极氧化是这一过程中最重要也是最复杂的一步。因此,设计稳定而高效的水氧化催化剂是电解水制氢的关键。铜基析氧催化剂是在温和条件下(室温,大气压,近中性)含有Cu~+的碳酸盐溶液(pH=10.25)中原位生成的。结果表明,所制备的铜基析氧催化剂是无定型的,其析氧速率为33.88μmol h~(-1)cm~(-2),在电流密度为1mAcm~(-2)时的析氧过电势为263.8mV。其后我们通过研究发现影响电解水催化剂活性的因素包括电解质温度和种类。铜基析氧催化剂由丰富廉价元素组成,反应条件温和,具有广阔的应用前景。
Converting solar energy to hydrogen by water splitting is a major trend of the future energy development. Water oxidation is in the most important and complex step in the conversion. So it is critical to design a stable and efficient catalyst for the water oxidation. The Cu-Ci oxygen-evolution catalyst are generated in situ in carbonate solution(pH 10.25) with copper(I) complex under mild conditions(room temperature, atmospheric pressure, and near-neutral solution). The result indicates that the prepared Cu-Ci catalyst is amorphous. The average oxygen-evolution rate is 33.88 mmol h~(-1)cm~(-2). An oxygen evolution overpotential of 263.8 mV is required at a current density of 1 m A cm~(-2). Factors affected catalytic activity during water splitting, including temperature and type of electrolyte, are investigated. The Cu-Ci catalyst consisted of abundant and inexpensive elements, indicating that it has wide application prospects for water splitting under mild conditions.
Converting solar energy to hydrogen by water splitting is a major trend of the future energy development. Water oxidation is in the most important and complex step in the conversion. So it is critical to design a stable and efficient catalyst for the water oxidation. The Cu-Ci oxygen-evolution catalyst are generated in situ in carbonate solution(pH 10.25) with copper(I) complex under mild conditions(room temperature, atmospheric pressure, and near-neutral solution). The result indicates that the prepared Cu-Ci catalyst is amorphous. The average oxygen-evolution rate is 33.88 mmol h~(-1)cm~(-2). An oxygen evolution overpotential of 263.8 mV is required at a current density of 1 m A cm~(-2). Factors affected catalytic activity during water splitting, including temperature and type of electrolyte, are investigated. The Cu-Ci catalyst consisted of abundant and inexpensive elements, indicating that it has wide application prospects for water splitting under mild conditions.
引文
[1]Zhao,Q.;Hao,G.;Yuan,W.;Ma,N.Electrochim.Acta 2015,152:280.