{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,29]],"date-time":"2026-10-29T18:37:41Z","timestamp":1793299061141,"version":"4.5.0"},"reference-count":39,"publisher":"American Chemical Society (ACS)","issue":"42","license":[{"start":{"date-parts":[[2026,10,19]],"date-time":"2026-10-19T00:00:00Z","timestamp":1792368000000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-029"},{"start":{"date-parts":[[2026,10,19]],"date-time":"2026-10-19T00:00:00Z","timestamp":1792368000000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-037"},{"start":{"date-parts":[[2026,10,19]],"date-time":"2026-10-19T00:00:00Z","timestamp":1792368000000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-045"}],"funder":[{"DOI":"10.13039\/501100005090","name":"Beijing Nova Program","doi-asserted-by":"publisher","award":["20250484762"],"award-info":[{"award-number":["20250484762"]}],"id":[{"id":"10.13039\/501100005090","id-type":"DOI","asserted-by":"publisher"}]},{"name":"National Outstanding Youth Science Fund Project of National Natural Science Foundation of China","award":["52102119"],"award-info":[{"award-number":["52102119"]}],"id":[{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,10,28]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>In this study, reduced graphene oxide (rGO) fillers with electrical conductivities spanning nearly five orders of magnitude (4.2 \u00d7 10\u20134 \u2013 20.58 S\/cm) were prepared by hydrothermal reduction and incorporated at a fixed loading of 0.5 wt % into zinc-rich epoxy coatings containing 50 wt % zinc powder. The influence of the reduction-dependent rGO state on coating structure, interfacial properties, cathodic protection, and corrosion resistance was systematically evaluated. A non-monotonic conductivity\u2013performance relationship was observed, with rGO160 (1.62 S\/cm) showing the best overall protection under the present formulation. XPS and FTIR revealed that rGO160 retained an intermediate surface polarity, while cross-sectional SEM and mechanical tests indicated a dense coating structure, reduced interfacial defects, and the highest pull-off adhesion strength (\u223c6.4 MPa). KPFM further showed a comparatively uniform contact-potential-difference distribution. After 30 days of immersion, the MZrZE-rGO160 coating retained the highest low-frequency impedance modulus (|Z|0.01Hz \u2248 4 \u00d7 107 \u03a9\u00b7cm2) and exhibited the lowest relative corrosion propagation after 300 h of salt-spray exposure. DFT calculations showed comparatively less favorable H2O and O2 adsorption on the idealized rGO160 surface (+0.03 and +0.61 eV, respectively), serving as supplementary thermodynamic descriptors rather than direct kinetic evidence. The results demonstrate that the optimum protection arises from the coupled balance of conductivity, surface chemistry, sheet dispersion\/restacking, conductive-network connectivity, and coating integrity. Accordingly, 1.62 S cm\u20131 should be regarded as a formulation-dependent optimum among the investigated rGO fillers rather than a universal conductivity threshold.<\/jats:p>","DOI":"10.1021\/acsami.6c11689","type":"journal-article","created":{"date-parts":[[2026,10,20]],"date-time":"2026-10-20T00:01:16Z","timestamp":1792454476000},"page":"58252-58268","source":"Crossref","is-referenced-by-count":0,"title":["Effect of Filler Conductive Threshold on Cathodic Protection and Anticorrosion Mechanism of Zinc-rich Epoxy Coatings"],"prefix":"10.1021","volume":"18","author":[{"given":"Yu","family":"Wang","sequence":"first","affiliation":[{"name":"China Testing & Certification International Group Co. Ltd. , Chaoyang District , ,","place":["Beijing, China, 10024"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yukang","family":"Sun","sequence":"additional","affiliation":[{"name":"China Testing & Certification International Group Co. 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