Unexpected Stabilization of α-Ni(OH)2 Nanoparticles in GO Nanocomposites

<div>(a, c, e) Nyquist and (b, d, f) Bode phase diagrams of α-Ni(OH)2 (a, b), α1-Ni(OH)2@GO (c, d), and α2-Ni(OH)2@GO (e, f) as a function of the number of redox cycles, up to 350 cycles. The EIS measurements were carried out after 0, 50, 100, and 350 cycles, at 0.55 V DC potential, and superimposed AC signal with <svg height="8.8423pt" id="M27" style="vertical-align:-0.2064009pt" version="1.1" viewbox="-0.0498162 -8.6359 43.952 8.8423" width="43.952pt" 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="M600 0V24L339 665L311 657L43 24V0H600ZM497 50H107L303 539L497 50Z"></path></g><g transform="matrix(.013,0,0,-0.013,8.327,0)"><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"></path></g><g transform="matrix(.013,0,0,-0.013,19.967,0)"><path d="M535 323V373H52V323H535ZM535 138V188H52V138H535Z"></path></g><g transform="matrix(.013,0,0,-0.013,31.23,0)"><path d="M384 0V27C293 34 287 42 287 114V635C232 613 172 594 109 583V559L157 557C201 555 205 550 205 499V114C205 42 199 34 109 27V0H384Z"></path></g><g transform="matrix(.013,0,0,-0.013,37.47,0)"><path d="M241 635C89 635 35 457 35 312C35 153 89 -12 240 -12C390 -12 443 166 443 312C443 466 390 635 241 635ZM238 602C329 602 354 454 354 312C354 172 330 22 240 22C152 22 124 173 124 313S148 602 238 602Z"></path></g></svg> mV, in the 0.01 to 50000 Hz range.</div>

Journal of Nanomaterials

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Figure 6

Figure 6: Unexpected Stabilization of α-Ni(OH)2 Nanoparticles in GO Nanocomposites