Flexible Integrated Electrical Cables Based on Biocomposites for Synchronous Energy Transmission and Storage

Abstract

wileyonlinelibrary.comfast-paced life. [ 22 ] For instance, although millions of miles of electrical cables have been used for providing electrical connections, the electrical energy produced from various physical or chemical sources to be distributed to users still need additional energy storage equipment, which causes unnecessary trouble and high cost. Moreover, people are possibly confronted with the inconvenience of sudden loss of power when using indoor electric appliances, and bothered by carrying heavy portable electronic accessories such as batteries and power cords simultaneously during a trip. Integrating the energy storage devices into appropriate energy transmission circuits should be an effective strategy to solve the problem of tiring energy distribution, sudden power off, and further lighten the weight of portable electronics, but current research barely involves the integration of energy storage devices and energy transit system, and these two systems still work independently with each other. [ 37,38 ] Supercapacitor, a promising class of energy storage device, is appealing because of its high power density, long cycle life time, and high energy effi ciency. [39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54] More importantly, supercapacitor can be easily fabricated in various confi gurations for ease of compatibility and integration with diversifi ed architectures of electronic devices. [55][56][57][58][59][60][61][62][63][64] From this, it can be expected that the integration of appropriate supercapacitor confi guration into proper circuit could achieve synchronous energy storage and energy transmission. Besides the confi guration, the exploration of naturally abundant and renewable biomaterials with high energy density for the new-generation green supercapacitors is intensively desired. [65][66][67][68][69] Thus, considering the issues of both the materials and confi guration, constructing an ideal integrated supercapacitor system based on renewable biomaterials for synchronous energy storage and transmission should be of scientifi c and technological importance due to their additional desirable economic, biocompatible and environmental friendly merits.Herein, we report the development of biocomposite-based fl exible integrated electrical cable for synchronous energy transmission and storage. In this unique integrated confi guration, the fi ber electrodes were alternately winded along the twisted electric wires, which worked not only as scaffolding to support and strengthen the slight electrodes but also as separators to spatially confi ne them to avoid short circuit ( Scheme 1 ). Distinct from the conventional electric wires used in a serial It becomes increasingly important to develop integrated systems with the aim of achieving maximum functionality for the state-of-the-art electronic devices. Here, a fl exible integrated electrical cable is reported by incorporating biomaterials based fi ber supercapacitors into a resistor-capacitor circuit. In this unique integrated confi gura...

Optimization and Preparation of a Gel Polymer Electrolyte Membrane for Supercapacitors

“…As displayed in Fig. 5b, when the scanning rate is 5 mV s −1 , the double‐layer effect is obvious, and the rectangle degree of the electrochemical window is relatively high with good capacitance characteristics 34–36. As the scanning rate increases, the ions needed to form a double layer at the electrode cannot be fully replenished, the response current generated by the electrode becomes slow, and the polarization of the electrode intensifies, resulting in an increase in the degree of deviation between the CV and the rectangle.…”

Tailoring Self‐Catalytic N─Co Bonds into Heterostructure Architectures: Deciphering Polytellurides Conversion Mechanism Toward Ultralong‐Lifespan Potassium Ion Storage

“…As depicted in Figure a, the calculated density of states (DOS) of N‐CoTe 2 /C around the Fermi level is higher than that of N‐CoTe 2 and bare CoTe 2 , demonstrating a slightly enhanced electron mobility. [ 15 ] Figure S2 (Supporting Information) presents the top views of K adsorption onto bare CoTe 2 , N‐CoTe 2 , and N‐CoTe 2 /C. The adsorption energy of N‐CoTe 2 /C (−1.723 eV) is more negative in comparison to those of N‐CoTe 2 (−1.252 eV) and bare CoTe 2 (−0.673 eV), validating that the N─Co bonds and heterostructure within N‐CoTe 2 /C can provide more active sites and facilitate the adsorption of K + (Figure 1b).…”

Cu‐Driven Active Cu2Se@MXene Heterointerface Reconstruction and Co Electron Reservoir Toward Superior Sodium Storage

“…[ 15 ] Additionally, as summarized in Table S1 (Supporting Information), most of the reported cycling numbers for selenide‐based or sulfide‐based anodes in the literature were less than 10 000, with a capacity decay rate exceeding 0.001%. [ 7,8,12,14,20,25,31,39–50 ] Although the reported FePS 3 /Ti 3 C 2 T x composite exhibits higher capacity and rate performance (598 mAh g −1 at 10 A g −1 ), its cycling numbers and ICE are only 2000 and 78% respectively. [ 30 ] After comprehensive comparison, our CoSe 2 @MXene composite exhibits superior overall performance, as confirmed by the radar plot in Figure 3g, where the parameter values of CoSe 2 @MXene are located on the periphery.…”