Deposition behavior regulated by an SPSF@PMIA nanofiber separator for high-performance zinc ion batteries

Abstract

The non-uniform ion deposition of zinc anodes forming zinc dendrites and the side reactions hinder the large-scale application of zinc ion batteries (ZIBs). Herein, a functional SPSF@PMIA (SP) separator is...

Multiscale Ion‐Sieving Separator with Selective Zn2+ Channels and Excellent Zn2+ Desolvation Kinetics for Dendrite‐Free and Kinetics‐Enhanced Zinc Metal Batteries

“…Remarkably, the battery adopting NPGO@GFs separators achieves a superior cycling stability with a current density as high as 20 mA cm −2 that could surpass almost all other separator modifications as previously reported. [38][39][40][41][42][43][44][45][46] To illustrate the feasibility of NPGO@GFs separators in Zn full batteries, the Zn-based full batteries were assembled to test with/without NPGO@GFs separators. In terms of MnO 2 ||Zn battery, bare Zn foil was adopted as the anode to couple with MnO 2 cathode, and 0.1 m MnSO 4 was introduced into ZnSO 4 (3 m) electrolyte to inhibit the dissolution of Mn 2+ from MnO 2 cathode during the electrochemical measures of the full batteries.…”

“…Remarkably, the battery adopting NPGO@GFs separators achieves a superior cycling stability with a current density as high as 20 mA cm −2 that could surpass almost all other separator modifications as previously reported. [ 38–46 ]…”

Securing Vanadium by Ion-anchoring Separators for Long-lasting Aqueous Zinc-Vanadium Batteries

“…The former also has higher capacity retention than the latter after an extra 150 cycles at this current density. We further compared the 1000-cycle capacity retention at 5 A g -1 in the published papers involving different strategies on separator modification for Zn/V-based full cell 11,22,23,[35][36][37] , which clearly displays that the SZ and SZ-V separator have excellent competitiveness (Figure 5g). A more detailed comparison of the performance of different separators in reported articles is shown in Table S2.…”

Metal Oxide Aerogels: A New Horizon for Stabilizing Anodes in Rechargeable Zinc Metal Batteries

“…[ 2–6 ] However, the inherent non‐uniformity of commercial Zn foils results in non‐uniform electric field on the Zn anode surface, which causes preferential Zn 2+ deposition at the tip zone due to its high surface energy. [ 7 ] Ultimately, random occurrence of uneven zinc deposition causes rampant zinc dendrites, which results in irreversible capacity loss of the Zn anode and degraded battery lifespan, thus critically restricting the commercial application of Zn anode. [ 8–10 ]…”

“…[2][3][4][5][6] However, the inherent nonuniformity of commercial Zn foils results in non-uniform electric field on the Zn anode surface, which causes preferential Zn 2+ deposition at the tip zone due to its high surface energy. [7] Ultimately, random occurrence of uneven zinc deposition causes rampant zinc dendrites, which results in irreversible capacity loss of the Zn anode and degraded battery lifespan, thus critically restricting the commercial application of Zn anode. [8][9][10] Recently, different strategies have been developed to inhibit the growth of Zn dendrites, such as design of functional separators, [11][12][13][14] optimization of the electrolytes or additives, [15][16][17] construction of nanostructured Zn anodes, [18] and introduction of interface protective layers.…”