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• An improved multi-timescale coordinated control strategy is proposed to be used in an integrated energy system. • A hybrid energy storage system is introduced into the system. • Operating costs and carbon emissions are considered as the optimization objectives. • General rules for sizing hybrid energy storage system are proposed in this paper. In view of the complex energy coupling and fluctuation of renewable energy sources in the integrated energy system, this paper proposes an improved multi-timescale coordinated control strategy for an integrated energy system (IES) with a hybrid energy storage system (HESS). The power response characteristics of various devices in IES at different time scales are analyzed which shows that the multi-timescale coordinated control method can be well coupled with the IES including HESS. The advantages of HESS over single energy storage system in stabilizing power fluctuation and extending energy storage life are compared and analyzed while the control method of supercapacitor under multi-time scale coordinated control strategy is proposed. The primary energy consumption, operating costs, carbon dioxide emissions and load shedding costs are considered the optimization objectives in the day-ahead rolling optimization stage according to the day-ahead forecast renewable energy (RE) data. In the intraday rolling adjusting stage, the proposed method can reduce the effect of the RE day-ahead forecasting errors to achieve the intraday energy scheduling balance and ensure the safe operation of the devices of IES. Considering the background of IES with a high proportion of renewable energy, this paper makes innovative use of the advantages of HESS to improve the power response characteristic of the system. The high-frequency part of RE is balanced by HESS in the real-time coordinated control stage. A typical structure of IES is applied and the simulation results are analyzed to show the performance of the proposed method in this paper. Moreover, general rules for sizing of HESS are also proposed. The influence of the hybrid energy storage capacity allocation ratio on battery capacity loss and carbon emission reduction is discussed. The Pareto front including the configuration and cost of supercapacitor has been obtained. As shown in the case, the application of HESS in the IES can improve the power response characteristic, extend the lithium-ion battery (LiB) life and has more benefits in reducing carbon emissions. [ABSTRACT FROM AUTHOR]

A transparent and anti-corrosive coating is of great importance for the protection of valuable articles, historical relics, and metal. However, there is a significant challenge due to the trade-off between high transparency and pleased anti-corrosive performance. The barrier function of skin, derived from the "brick and mortar" microstructure where hydrophobic corneocytes are parallelly embedded in lipids of the skin stratum corneum, offers an admirable concept to solve the problem. Herein, a novel bio-inspired assembly strategy is implemented to fabricate transparent and high-performance anti-corrosive epoxy nanocomposite coatings (Bio-MFICs), cooperating with superhydrophobic magnetic responsive graphene oxide nanosheets (FSO-GO) parallelly aligned in epoxy resin via magnetic-field-induced assembly and bridging structure further forming during curing process. The structure of Bio-MFICs is highly consistent with the "brick and mortar" structure of the skin stratum corneum, where FSO-GO nanosheets act as "corneocytes" and epoxy matrix acts as "lipids". The subtle skin-mimetic structure contributes to the excellent anti-corrosive performance of Bio-MFICs because of the prolonged and blocked diffusion pathway of corrosive media. As a result, the resistance of Bio-MFIC- 3 (0.75 wt% filler content) remains 4.17×107 Ω·cm−2, which is 43 times that of the pure epoxy coating, and the logarithm of breaking point frequency is quite low as −1.05 after immersion in 3.5 wt% NaCl solution for 28 days. Moreover, the transparency of the Bio-MFIC- 3 is highly close to that of the pure epoxy coating. This work provides an effective method of constructing transparent protective materials to reduce the loss of materials and achieve the goal of energy-saving and greenhouse gas emissions reduction. • A novel skin-mimetic strategy is proposed to fabricate transparent coatings with excellent barrier performance. • Magnetic-field-induced assembly is applied to construct the parallelly-aligned structure of graphene oxide sheets in epoxy. • Superhydrophobic magnetic responsive graphene oxide is synthesized by an in-situ method. • The anti-corrosion is realized by the prolonged diffusion pathway and higher diffusion resistance. [ABSTRACT FROM AUTHOR]