高性能性海水电解与异常化物促进氧气进化反应反应
Hao Liu1, Wei Shen2, Huanyu Jin1
1School of Chemical Engineering and Advanced Materials, The University of Adelaide, 5005, Adelaide, SA, Australia.
Angewandte Chemie (International ed. in English)
|September 15, 2023
概括
铁层双氧化物 (NiFe LDH) 作为海水中氧化演化反应 (OER) 的有益电催化剂. 离子吸收增强了NiFe LDH活性和稳定性,用于直接海水电解.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 可再生能源是可再生能源的来源.
背景情况:
- 由于离子干扰氧化演化反应 (OER) 电催化剂,直接分离海水以生产具有挑战性.
- 现有的OER催化剂通常专注于排斥化物离子,从而限制了它们在天然海水中的有效性.
研究的目的:
- 研究离子吸收对天然海水中OER的铁层双氧化物 (NiFe LDH) 的影响.
- 为了证明使用NiFe LDH的直接性海水电解的可行性.
主要方法:
- 现场表征技术被用来分析化物离子和NiFe LDH之间的相互作用.
- 电化学性能测试使用商业规模的性电解仪与NiFe LDH阳极进行.
主要成果:
- 在NiFe LDH上离子吸附增强了OER活性和稳定性,通过抑制铁液和创造更活跃的位.
- 直接性海水电解在120平方厘米的电极面积性电解仪上成功实现.
- NiFe LDH 阳极在 200 mA cm−2.2 的情况下,在 100 小时内表现出极好的耐用性.
结论:
- 在NiFe LDH上离子的吸收对自然海水中的OER是有益的,而不是有害的.
- 与净化水电解相比,NiFe LDH可实现高效和稳定的性海水直接电解,减少20.7%的电力消耗.
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