Recent progress on green electromagnetic shielding materials based on macro wood and micro cellulose components from natural agricultural and forestry resources

Flexible, Transparent, and Hazy Composite Cellulosic Film with Interconnected Silver Nanowire Networks for EMI Shielding and Joule Heating

“…Figure d illustrates how the PDMS/AgNWs/TCP composite film reflects EM waves to reveal the basic EMI shielding mechanism. When penetrating EM waves encounter the surface of the composite film, most of the EM waves are reflected immediately due to the presence of abundant free electrons in the conductive AgNW network, and the resultant Ohmic losses contribute to a significant drop in the energy of the EM waves. − The continuous and effective AgNW network dissipates most EM waves in the forms of heat or other energies constantly. − Moreover, the interconnected AgNW network of the composite film provides abundant active sites and interfaces for multiple reflections as well, leading to further EM wave absorption attenuation. − …”

Recent progress in the development of smart supercapacitors

“…In recent years, multifunctional flexible MSC has been an attractive prospect in the field of integrated microelectronic systems due to its high power density, fast charge/discharge rate, and small volume characteristics. However, failures of electronic equipment and systems can be caused by electromagnetic interference (EMI) radiated 34,36,118 by adjacent microwave or RF circuits. Hence, it is very important to control electromagnetic pollution and require proper microwave shielding protection to keep the normal operation of electronic equipment.…”

“…Compared with traditional supercapacitors, intelligent supercapacitors not only have all the characteristics of traditional capacitors (high power density, long cycle life, fast charging speed, and good rate performance) but also give them special functions by designing and regulating their electrode components and structures to meet the intelligence requirements in different environmental applications (Figure 1). [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] In recent years, researchers have also performed a lot of research work on smart supercapacitors and made great progress. [39][40][41][42][43][44][45][46][47] For example, an electrochromic smart supercapacitor, 39 that is, through the change in the color of the energy storage device, is used to visualize the amount of residual power of a device.…”

A multifunctional paper-based supercapacitor with excellent temperature adaptability, plasticity, tensile strength, self-healing, and high thermoelectric effects

“…Energy and environmental issues have always been two key core issues that cannot be avoided in the development of human society. [1][2][3][4][5] Especially with the continuous reduction of petrochemical resources and outstanding environmental problems caused by them, researchers have been focussing on the research and development of new and sustainable green electrochemical energy sources. [6][7][8][9][10] Among them, supercapacitors, as electrochemical energy storage devices with high power density, long cycle life, good safety, and other advantages, have attracted extensive attention from researchers.…”