引用本文:
王彦恩, 曹爽, 唐亚文, 王春, 马晶军, 陆天虹. 碳载Pt-P催化剂对氧还原的电催化性能[J]. 应用化学,
2011, 28(1): 44-47.
doi:
10.3724/SP.J.1095.2011.00190
Citation: WANG Yanen, CAO Shuang, TANG Yawen, WANG Chun, MA Jingjun, LU Tianhong. Electrocatalytic Performance of the Carbon-Supported Pt-P Catalyst for Oxygen Reduction[J]. Chinese Journal of Applied Chemistry, 2011, 28(1): 44-47. doi: 10.3724/SP.J.1095.2011.00190
Citation: WANG Yanen, CAO Shuang, TANG Yawen, WANG Chun, MA Jingjun, LU Tianhong. Electrocatalytic Performance of the Carbon-Supported Pt-P Catalyst for Oxygen Reduction[J]. Chinese Journal of Applied Chemistry, 2011, 28(1): 44-47. doi: 10.3724/SP.J.1095.2011.00190
碳载Pt-P催化剂对氧还原的电催化性能
摘要:
用NaH2PO2液相还原方法制得碳载Pt-P(Pt-P/C)催化剂(m(Pt):m(P)=5:1)。X射线衍射谱测量表明,Pt-P/C催化剂的Pt衍射峰的2θ值稍大于Pt/C催化剂的相应值,表明P进入了Pt晶格,形成了Pt-P合金。电化学测试表明,Pt-P/C催化剂对氧还原的电催化性能要比商品化的E-TEKPt/C催化剂好,其还原电位正移了40mV。由于Pt-P/C催化剂中Pt-P粒子的平均粒径和相对结晶度与Pt/C催化剂相似,推测Pt-P/C催化剂对氧还原的电催化性能好于Pt/C催化剂的原因可能为P的作用。
English
Electrocatalytic Performance of the Carbon-Supported Pt-P Catalyst for Oxygen Reduction
Abstract:
The carbon-supported Pt-P(Pt-P/C) catalyst(m(Pt):m(P)=5:1) was prepared with NaH2 PO2 reduction method. The X-ray diffraction results indicate that the 2θ values of the Pt diffraction peaks of the Pt-P/C catalyst are slightly greater than those of the Pt/C catalyst, illustrating that P has entered into the crystal lattice of Pt and forms the Pt-P alloy. The electrochemical measurements demonstrated that the electrocatalytic performance of the Pt-P/C catalyst for the oxygen reduction is better than that of the commercial E-TEK Pt/C catalyst with 40 mV positive shift of reduction potential, which may be attributed to the P action because the average size and the relative crystallinity of the Pt-P particles in the Pt-P/C catalyst are similar to those in Pt/C catalyst.
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