Advanced low‐dimensional carbon materials for flexible devices

Abstract

We live in a digitized era, where we are completely surrounded by a plethora of automated electronic systems, be it a smart home energy controller or a self‐operated diagnostic kiosk in a clinic. With the recent advent of one‐dimensional (1D) and two‐dimensional (2D) nanomaterials like carbon nanotube (CNT) and graphene, the world of electronics has revolutionized with state‐of‐the‐art product paradigms. These nanomaterials possess desirable features of large surface area, excellent electrical conductivity, and high mechanical strength. Electronic devices made out of these materials have the added advantages of being flexible, light‐weight, and durable. Thus, present‐day devices that utilize these substances as channel or electrode materials have been able to undergo a positive transformation as compared with conventional structures. Flexibility and bendability are some of the coveted aesthetics of modern‐day electronics and the use of these 1D and 2D nanomaterials imparts such features to the devices, without having to compromise on key output characteristics like sensitivity and efficiency. In this short review, we discuss about various new configurations that are based on graphene, CNT, and other materials like transition metal dichalcogenides, and how these materials have been able to metamorphose the attributes of conventional devices.image

Design Strategies for High‐Performance Aqueous Zn/Organic Batteries

“…They are promising host of organic cathode materials. [85][86][87] Furthermore,o wing to their unique structures,n anocarbon materials can form conductive porous networks in nanocarbon-based cathodes. [88] Theelectrons can be transported in the networks easily even the organic compounds are incorporated into the composite electrodes.A fter adding multiwalled carbon nanotubes (MWCNTs) into organosulfur polymer PexTTF electrodes,PexTTF could display aspecific capacity of 111 mAh g À1 even at ah igh current density of 120 C(1C= 133 mA g À1 ).…”

Advanced energy materials for flexible batteries in energy storage: A review

“…124 Current collectors can be also made from carbonaceous and polymeric materials with various dimensions. 125 Typical building blocks includes CNTs, [126][127][128] carbon fibers, [129][130][131][132][133] carbon cloth (CC), 134,135 graphene, [136][137][138][139] polyacrylonitrile (PAN), 140,141 cellulose, [142][143][144] and their hybrids. 145 These current collectors are featured with high flexibility, extraordinary conductivity, light weight and large surface area, favoring mass/charge transport, active material supports, and volume change accommodation.…”

Optimizing Redox Reactions in Aprotic Lithium–Sulfur Batteries

“…[ 90 ] To this end, enormous efforts have been made to design novel nanostructured C–S composite electrodes such as 3D hyperbranched hollow carbon nanorod/S, [ 91 ] hollow carbon sphere/S, [ 92 ] hollow carbon nanofiber or nanotube/S, [ 93 ] ordered meso‐/microporous core–shell carbon/S, [ 94 ] unstacked double‐layer‐templated graphene/S, [ 95 ] hollow graphene sphere/S, [ 96 ] interconnected CNTs/graphene nanosphere/S, [ 97 ] and tube‐in‐tube carbon/S nanocomposites. [ 98 ] In general, the above nanostructured carbon matrix features the several merits: [ 99–101 ] i) to maintain sufficient electrochemical active surface and facilitate the redox reaction kinetics; ii) to trap the LiPSs due to the adsorption properties of the carbon; iii) to act as an electronic conduit for encapsulating the active species, ensuring a more complete redox reaction and thus increasing the utilization of the active S; iv) to minimize S leaching, and accommodate volume expansion of S during cycling.…”