A graphene foam electrode with high sulfur loading for flexible and high energy Li-S batteries

TL;DR: In this paper, the preparation of turbostratic carbon in monolithic form by silica template method and its use as host matrix to trap polysulfides in Li-S batteries is described.

TL;DR: Li et al. as discussed by the authors proposed and prepared a lithium-ion sulfur polymer battery (LISPB) that employs a stable SnO 2 anode and a bi-functional gel polymer electrolyte (GPE).

Abstract: A promising hybrid material composed of tubular polypyrrole (T-PPy)-wrapped monodisperse biomass-derived carbon nanospheres (BCSs) was first synthesized successfully via a simple hydrothermal approach by using watermelon juice as the carbon source, and further used as an anchoring object for sulfur (S) of lithium–sulfur (Li–S) batteries. The use of BCSs with hydrophilic nature as a framework could provide large interface areas between the active materials and electrolyte, and improve the dispersion of T-PPy, which could help in the active material utilization. As a result, BCS@T-PPy/S as a cathode material exhibited a high capacity of 1143.6 mA h g−1 and delivered a stable capacity up to 685.8 mA h g−1 after 500 cycles at 0.5 C, demonstrating its promising application for rechargeable Li–S batteries.

TL;DR: In this article, the gap between graphene research and the key parameters in Li-ion batteries and beyond is discussed, such as the electrochemical window, the electrode surface area, and the parasitic weight.

TL;DR: In this paper, the authors report the feasibility to approach such capacities by creating highly ordered interwoven composites, where conductive mesoporous carbon framework precisely constrains sulphur nanofiller growth within its channels and generates essential electrical contact to the insulating sulphur.

TL;DR: This Review introduces several typical energy storage systems, including thermal, mechanical, electromagnetic, hydrogen, and electrochemical energy storage, and the current status of high-performance hydrogen storage materials for on-board applications and electrochemicals for lithium-ion batteries and supercapacitors.

TL;DR: The direct synthesis of three-dimensional foam-like graphene macrostructures, which are called graphene foams (GFs), by template-directed chemical vapour deposition is reported, demonstrating the great potential of GF/poly(dimethyl siloxane) composites for flexible, foldable and stretchable conductors.