With the increasing energy demand together with the deteriorating environment and decreasing fossil fuel resources, the development of highly efficient energy conversion and storage devices is one of the key challenges of both fundamental and applied research in energy technology. Melamine sponges (MS) with low density, high nitrogen content, and high porosity have been used to design and obtain three‐dimensional porous carbon electrode materials. More importantly, they are inexpensive, environment‐friendly, and easy to synthesize. There have been many reports on the modification of carbonized MS and MS‐based composites for supercapacitor and lithium battery electrode materials. In this paper, recent studies on the fabrication of electrode materials using MS as raw materials have been mainly reviewed, including carbonation, doping activation, and composite modification of MS, and expectations for the development of porous carbon materials for energy storage as a reference with excellent performance, environment‐friendliness, and long life.

Mesocrystal Co9S8 hollow spheres are reported through a convenient preparation route, and exhibit good performance for Li-ion batteries.

Polycrystalline rose-like Co 9 S 8 hierarchical architectures were fabricated by a facile solvothermal route in a binary solution of diethylenetriamine and ethylene glycol. The influencing factors, including the reaction time and volume ratio of diethylenetriamine to ethylene glycol, were systematically investigated. Based on field emission scanning electron microscope (FESEM) observations, a selfassembly process was proposed in order to explain the formation of the rose-like Co 9 S 8 hierarchical architectures. Moreover, the electrochemical properties of the rose-like Co 9 S 8 were measured. The roselike Co 9 S 8 architectures possessed high discharge capacities and good cycling performances as cathode materials for application in lithium-ion batteries.

Uniform single-crystalline hexagonal-shaped Sb 2 Te 3 nanoplates with a thickness of 30-40 nm have been successfully synthesized by a glucose-assisted solvothermal process in the mixed solvents of ethanediamine and water. It is found that the reaction time, concentration of glucose, reaction temperature and the volume ratio of ethanediamine to water play important roles in the formation of the uniform Sb 2 Te 3 nanoplates. Based on the experimental results, the possible reaction process and formation mechanism of these hexagonal nanoplates is proposed. Different from previous reports, the growth process of such Sb 2 Te 3 nanoplates can be reasonably explained by a self-assembly process and an Ostwald ripening mechanism. The thermoelectric transport properties are investigated by measuring the electrical conductivity and the Seebeck coefficient in the temperature range of 300-600 K. The samples show much more enhanced Seebeck coefficients than that of bulk Sb 2 Te 3 . Meanwhile, the size of the sample has much impact on both the electrical conductivity and the Seebeck coefficient.

Hierarchical worm-like CoS2 assembled by ultrathin nanosheets with an average thickness of 2.1 nm were synthesized by a simple solvothermal process without any surfactant or template.

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