Electrochemical and Morphological Investigations of Ga Addition to Pt Electrocatalyst Supported on Carbon

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Electrocatalyst</td><td class="align_center"><svg height="11.8174pt" id="M28" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -8.6359 11.7492 11.8174" width="11.7492pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M593 650H142L136 622C219 616 224 611 209 531L130 120C114 39 108 34 23 28L17 0H501C518 32 557 130 568 158L540 169C519 132 495 93 469 70C439 43 409 35 332 35C272 35 241 37 225 50C211 61 211 89 222 149L253 320H350C441 320 443 312 441 239H471L510 434H481C455 366 448 358 360 358H260L303 572C311 613 312 615 348 615H431C509 615 522 603 532 581C544 555 546 531 545 491L574 493C583 555 592 631 593 650Z" id="g113-70"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="616" vert-adv-y="616"></glyph.data></g><g transform="matrix(.0091,0,0,-0.0091,7.943,3.132)"><path d="M308 0V33C225 38 217 44 217 128V521C217 605 225 612 308 617V650H39V617C122 612 130 605 130 521V128C130 44 122 38 39 33V0H308Z" id="g58-71"></path><glyph.data ascent="1007" descent="-369" horiz-adv-x="348" vert-adv-y="348"></glyph.data></g></svg> (V versus RHE) </td><td class="align_center"><svg height="11.8174pt" id="M29" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -8.6359 13.503 11.8174" width="13.503pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M593 650H142L136 622C219 616 224 611 209 531L130 120C114 39 108 34 23 28L17 0H501C518 32 557 130 568 158L540 169C519 132 495 93 469 70C439 43 409 35 332 35C272 35 241 37 225 50C211 61 211 89 222 149L253 320H350C441 320 443 312 441 239H471L510 434H481C455 366 448 358 360 358H260L303 572C311 613 312 615 348 615H431C509 615 522 603 532 581C544 555 546 531 545 491L574 493C583 555 592 631 593 650Z" id="g113-70"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="616" vert-adv-y="616"></glyph.data></g><g transform="matrix(.0091,0,0,-0.0091,7.943,3.132)"><path d="M502 500C497 551 492 613 491 650H43V617C122 612 130 606 130 521V129C130 45 122 38 41 33V0H319V33C227 38 217 45 217 129V305H319C411 305 413 295 427 225H461V421H427C414 357 411 348 319 348H217V580C217 609 219 612 250 612H330C401 612 423 605 439 578C452 557 458 539 467 496L502 500Z" id="g58-68"></path><glyph.data ascent="1007" descent="-369" horiz-adv-x="540" vert-adv-y="540"></glyph.data></g></svg> (V versus RHE) </td><td class="align_center"><svg height="11.8174pt" id="M30" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -8.6359 31.9379 11.8174" width="31.9379pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M593 650H142L136 622C219 616 224 611 209 531L130 120C114 39 108 34 23 28L17 0H501C518 32 557 130 568 158L540 169C519 132 495 93 469 70C439 43 409 35 332 35C272 35 241 37 225 50C211 61 211 89 222 149L253 320H350C441 320 443 312 441 239H471L510 434H481C455 366 448 358 360 358H260L303 572C311 613 312 615 348 615H431C509 615 522 603 532 581C544 555 546 531 545 491L574 493C583 555 592 631 593 650Z" id="g113-70"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="616" vert-adv-y="616"></glyph.data></g><g transform="matrix(.0091,0,0,-0.0091,7.943,3.132)"><path d="M502 500C497 551 492 613 491 650H43V617C122 612 130 606 130 521V129C130 45 122 38 41 33V0H319V33C227 38 217 45 217 129V305H319C411 305 413 295 427 225H461V421H427C414 357 411 348 319 348H217V580C217 609 219 612 250 612H330C401 612 423 605 439 578C452 557 458 539 467 496L502 500Z" id="g58-68"></path><glyph.data ascent="1007" descent="-369" horiz-adv-x="540" vert-adv-y="540"></glyph.data></g><g transform="matrix(.013,0,0,-0.013,13.374,0)"><path d="M469 201V252H50V201H469Z" id="g190-178"></path><glyph.data ascent="989" descent="-360" horiz-adv-x="520" vert-adv-y="520"></glyph.data></g><g transform="matrix(.013,0,0,-0.013,20.159,0)"><path d="M593 650H142L136 622C219 616 224 611 209 531L130 120C114 39 108 34 23 28L17 0H501C518 32 557 130 568 158L540 169C519 132 495 93 469 70C439 43 409 35 332 35C272 35 241 37 225 50C211 61 211 89 222 149L253 320H350C441 320 443 312 441 239H471L510 434H481C455 366 448 358 360 358H260L303 572C311 613 312 615 348 615H431C509 615 522 603 532 581C544 555 546 531 545 491L574 493C583 555 592 631 593 650Z" id="g113-70"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="616" vert-adv-y="616"></glyph.data></g><g transform="matrix(.0091,0,0,-0.0091,28.102,3.132)"><path d="M308 0V33C225 38 217 44 217 128V521C217 605 225 612 308 617V650H39V617C122 612 130 605 130 521V128C130 44 122 38 39 33V0H308Z" id="g58-71"></path><glyph.data ascent="1007" descent="-369" horiz-adv-x="348" vert-adv-y="348"></glyph.data></g></svg> (V versus RHE) </td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Pt<sub>100</sub>/C</td><td class="align_center">0.56</td><td class="align_center">0.87</td><td class="align_center">0.31</td></tr><tr><td class="align_left">Pt<sub>91</sub>Ga<sub>9</sub>/C</td><td class="align_center">0.50</td><td class="align_center">0.74</td><td class="align_center">0.24</td></tr><tr><td class="align_left">Pt<sub>83</sub>Ga<sub>17</sub>/C</td><td class="align_center">0.50</td><td class="align_center">0.70</td><td class="align_center">0.20</td></tr><tr><td class="align_left">Pt<sub>69</sub>Ga<sub>31</sub>/C</td><td class="align_center">0.55</td><td class="align_center">0.76</td><td class="align_center">0.21</td></tr><tr><td class="align_left">Pt<sub>75</sub>Ga<sub>25</sub>/C</td><td class="align_center">0.50</td><td class="align_center">1.28</td><td class="align_center">0.78</td></tr><tr><td class="align_left">Pt<sub>54</sub>Ga<sub>46</sub>/C</td><td class="align_center">0.47</td><td class="align_center">0.65</td><td class="align_center">0.18</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Potential variation of PtGa/C electrocatalysts after 15 hours of electrolysis in ethanol 1.0 mol L<sup>−1</sup> at 3.0 mA cm<sup>−2</sup>.

The Scientific World Journal

tab4

Table 4

Table 4: Electrochemical and Morphological Investigations of Ga Addition to Pt Electrocatalyst Supported on Carbon 