Nano Research ( IF 9.5 ) Pub Date : 2024-02-02 , DOI: 10.1007/s12274-024-6419-6
Yuhao Duan , Liuxu Wei , Chenyu Cai , Junbao Mi , Fuyuan Cao , Jiaze Chen , Xiaolong Li , Xiujiang Pang , Bin Li , Lei Wang
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The chlorine evolution reaction (CER) is a crucial step in the production of chlorine gas and active chlorine by chlor-alkali electrolysis. Currently, the endeavor to fabricate electrodes capable of yielding high current density at minimal overpotential remains a central challenge in advancing the realm of chlorine evolution reactions. Here, we grow TiO2 and RuO2 on MXene@carbon cloth (CC) through the favorable affinity and induced deposition effect between the surface functional groups of MXene and the metal. A self-supported electrode (RuTiO2/MXene@CC) with strong binding at the electrocatalyst–support interface and weak adhesion at electrocatalyst–bubble interface is constructed. The RuTiO2/MXene@CC can reduce the electron density of RuO2 by regulating the electron redistribution at the heterogeneous interface, thus enhancing the adsorption of Cl−. RuTiO2/MXene@CC could achieve a high current density of 1000 mA·cm−2 at a small overpotential of 220 mV, superior to commercial dimensionally stable anodes (DSA). This study provides a new strategy for constructing efficient CER catalysts at high current density.
中文翻译:
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碳布上多异质结涂层的 RuO2/TiO2/MXene 用于大电流密度下的高活性析氯反应
析氯反应(CER)是氯碱电解生产氯气和活性氯的关键步骤。目前,制造能够在最小过电势下产生高电流密度的电极仍然是推进氯析出反应领域的核心挑战。在这里,我们通过MXene表面官能团与金属之间良好的亲和力和诱导沉积效应在MXene@碳布(CC)上生长TiO 2和RuO 2 。构建了一种自支撑电极(RuTiO 2 /MXene@CC),在电催化剂-载体界面处具有强结合力,在电催化剂-气泡界面处具有弱粘附力。 RuTiO 2 /MXene@CC可以通过调节异质界面的电子重新分布来降低RuO 2的电子密度,从而增强对Cl -的吸附。 RuTiO 2 /MXene@CC可以在220 mV的小过电势下实现1000 mA·cm - 2的高电流密度,优于商业尺寸稳定阳极(DSA)。这项研究为在高电流密度下构建高效 CER 催化剂提供了一种新策略。