The extraordinary claims require the extraordinary evidence. We'll see the opinion of professional electrochemists.

By the way, I did not find both your citations in provided references

 "both electrochemical and chemical dissolution of Pt in acidic or alkaline electrolyte cause redeposition of Pt on the working electrode of interest, which significantly improves the HER activity

“Pt should not be selected as the counter electrode for measuring the activity of HER unless it is coupled with an ion-exchange membrane, which was commonly ignored during past research.”

Please check this reference carfullly!

Chen R, Yang C, Cai W, et al. Use of Platinum as the Counter Electrode to Study the Activity of Nonprecious Metal Catalysts for the Hydrogen Evolution Reaction[J]. ACS Energy Letters, 2017, 2: 1070-1075.

http://pubs.acs.org/doi/abs/10.1021/acsenergylett.7b00219

the review in Advanced Materials （Adv. Mater., 2017, DOI: 10.1002/adma.201605838） also give the same concern about this issue！please read it carefully！

the Supporting information (Fig. S16) also give the results that electrochemical dissolution of Pt in acidic electrolyte cause redeposition of Pt on the working electrode, which significantly improves the HER activity. please check it (Energy Environ. Sci., 2017, DOI: 10.1039/C7EE00388A).

Before posting my comments I read all these papers. You put two sentences in quotation marks. I did not find these sentences in these papers.

From Wiki

Quotation: "a group of words taken from a text or speech and repeated by someone other than the original author or speaker."

"Quotation marks, also called quotes, quote marks, quotemarks, speech marks, inverted commas or talking marks, are punctuation marks used in pairs in various writing systems to set off direct speech, a quotation, or a phrase."

In my post I did not say NO. I can't rule out such possibility. 

Dear Zhangping, I beg a pardon. With your help I've found both quotations in the end of the first paper. I checked all three papers and SI's using command "find," Nothing similar was found. 

Again,  in my post I did not say NO. I can't rule out such possibility. We'll see the opinion of professional electrochemists.

 Dear Zhangping Shi,

in order to respond I have to know what HER is (sorry for my ignorance). Normally, Pt is used as an electrode because of its chemical inertness. The evidence that it gets dissolved and re-deposited needs to be established "beyond reasonable doubt". From what you write, this does not seem to be the case.  

With best regards

Petr 

Dear Petr,

thanks for your reply, sorry for my negligence, HER refers to electrochemical  Hydrogen evolution reaction via water split. As the listed literatures demonstrated, it has been proved that "electrochemical dissolution of Pt in acidic or alkaline electrolyte cause redeposition of Pt on the working electrode of interest". Pt is the best cathode electrocatalyst for water split, so Pt adopted as counter electode in HER process would  seriously interfered the HER activity evaluation, and increasing researchers begin to realize this problem. 

So, I post this question in order to appeal us to adviod the use of Pt  as as counter electode in HER process.

best wishes

SHI

Dear Shi,

thank you for clarifying the matter. I think I will go to the listed literature to se the evidence given. 

With best regards

Petr