A capacity-recoverable zinc-ion micro-supercapacitor with high energy and power density is developed.

By an ice-template method, in this work we realized an ambient pressure dried graphene aerogel (ADGA) with superelasticity and multifunctionality by using ordinary instruments.

To investigate the e¡ects of body size and water temperature on feeding and growth in the sea cucumber Apostichopus japonicus (Selenka), the maximum rate of food consumption in terms of energy (C maxe ; J day À1 ) and the speci¢c growth rate in terms of energy (SGRe; % day À1 ) in animals of three body sizes (mean AE SE)^large (134.0 AE 3.5 g), medium (73.6 AE 2.2 g) and small (36.5 AE 1.2 g)^were determined at water temperatures of 10, 15, 20, 25 and 30 1C. Maximum rate of food consumption in terms of energy increased and SGRe decreased with increasing body weight at 10, 15 and 20 1C. This trend, however, was not apparent at 25 and 30 1C, which could be in£uenced by aestivation. High water temperatures (above 20 1C) were disadvantageous to feeding and growth of this animal; SGRe of A. japonicus during aestivation was negative. The optimum temperatures for food consumption and for growth were similar and were between 14 and 15 1C, and body size seemed to have a slight e¡ect on the optimal temperature for food consumption or growth. Because aestivation of A. japonicus was temperature dependent, the present paper also documented the threshold temperatures to aestivation as indicated by feeding cessation. Deduced from daily food consumption of individuals, the threshold temperature to aestivation for large and medium animals (73.3^139.3 g) was 24.5 À25.5 1C, while that for small animals (28.94 0.7 g) was between 25.5 and 30.5 1C. These values are higher than previous reports; di¡erences in sign of aestivation, experimental condition and dwelling district of test animals could be the reasons.

The inherently formed liquid crystals (LCs) of graphene oxide (GO) in aqueous dispersions severely restrict the fabrication of large-size and structure-intact graphene aerogel bulk by an industry-applicable method. Herein, by developing a surfactant-foaming sol−gel method to effectively disrupt and reconstruct the inherent GO LCs via microbubbles as templates, we achieve the large-size and structure-intact graphene hydrogel bulk (GHB). After simple freezing and air-drying, the resulting graphene aerogel bulk (GAB) with a structure-intact size of about 1 m 2 exhibits a superelasticity of up to 99% compressive strain, ultralow density of 2.8 mg cm −3 , and quick solar-thermal conversion ability. The modified GAB (GABTP) shows a high decomposition temperature (T max ) of 735 °C in air and a low heat storage capacity. These excellent performances make the GABs suitable for many practical applications, as proven in this work, including as high compressive force absorbers, high absorption materials for oils or dangerous solvents, superior solar-thermal management materials for rapid heater or controlled shelter, and high-efficiency fire-resistant and thermal insulation materials. The whole preparation process is easily scalable and cost-effective for mass production of structureintact multifunctional graphene aerogel bulk toward practical applications.