The ion hybrid capacitor is expected to combine the high specific energy of battery-type materials and the superior specific power of capacitor-type materials, being considered as a promising energy storage technique. Particularly, the aqueous zinc-ion capacitors (ZIC) possessing merits of high safety, cost-efficiency and eco-friendliness, have been widely explored with various electrode materials and electrolytes to obtain excellent electrochemical performance. In this review, we first summarized the research progress on enhancing the specific capacitance of capacitor-type materials and reviewed the research on improving the cycling capability of battery-type materials under high current densities. Then, we looked back on the effects of electrolyte engineering on the electrochemical performance of ZIC. Finally, the research challenges and development directions of ZIC have been proposed. This review provides a guidance for the design and construction of the high-performance ZIC.
Background Previously increasing studies revealed that overweight/obesity patients were significantly higher in groups of patients with common otorhinolaryngological inflammatory diseases. Although there still may have some controversies remaining in the effect of overweight/obesity on CRS. Therefore, this study aimed to perform a meta-analysis to explore whether overweight/obesity is a significant risk factor for CRS. Methods In this meta-analysis, we comprehensively and systematically searched for relevant published literatures concerning the correlation between overweight/obesity and risk of CRS through applying a predefined search terms as follows: (“overweight” OR “obesity”) AND (“chronic rhinosinusitis” OR “nasal polyps” OR “CRS” OR “CRSsNP” OR “CRSwNP”) in the following databases: PubMed, Web of science, Embase, Cochrane Library, and Google Scholar from inception to July 31, 2022. To explore the association between overweight/obesity and risk of developing CRS, multivariate odds ratio (OR) or relative risk (RR) and 95% confidence intervals (CI) were analyzed by using STATA software version16.0. This meta-analysis was registered with PROSPERO, CRD42022353658. Results Of 376 studies initially identified, only 7 studies concerning on the association between overweight/obesity and risk of CRS were eligible for the inclusion criteria eventually. The meta-analysis indicated that overweight was closely related to elevated risk of CRS (OR/RR = 1.04, 95%CI 0.90–1.18, P < 0.001). Meanwhile, the meta-analysis suggested that obesity was significantly related to elevated risk of CRS (OR/RR = 1.01, 95%CI 0.99–1.03, P < 0.001). Sensitivity analyses showed that there are no changes in the direction of effect when any one study was omitted from all meta-analyses. In addition, there was no significant risk of publication bias in this meta-analysis by performing Bgg’s test, Egger’s test, and funnel plot. Conclusion We found that overweight/obesity contributed to increasing the risk of developing CRS. Certainty, the result should be interpreted cautiously. Certainty, to obtain a more convincible result, more rigorous and high-quality clinical research will be warranted to be performed to evaluate the relationship between overweight/obesity and CRS in future.
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