Rational design of sulfur electrodes is exceptionally important in enabling a high performance lithium/sulfur cell. Constructing a continuous pore structure of the sulfur electrode that enables facile lithium ion transport into the electrode and mitigates the reconstruction of sulfur is a key factor for enhancing the electrochemical performance. Here, we report a three-dimensionally (3D) aligned sulfur electrode cast onto conventional aluminium foil by directional freeze tape casting. The 3D aligned sulfur-graphene oxide (S-GO) electrode consisting of a few micronthick S-GO layers with 10-20 μm interlayer spacings demonstrates significant improvement in the performance of the Li/S cell. Moreover, the freeze tape cast graphene oxide electrode exhibits homogenous reconfiguration behaviour in the polysulfide catholyte cell tests, and demonstrated extended cycling capability with only 4 % decay of the specific capacity over 200 cycles. This work emphasizes the critical importance of proper structural design for sulfurcarbonaceous composite electrodes. TEXT The continued development of electrochemical energy storage and conversion systems (e.g.batteries, fuel cells and supercapacitors) has made a tremendous impact on the infrastructure of modern society. Rechargeable batteries, as represented by lithium ion cells, have been adopted in numerous electronic devices such as cell phones, laptops, smart pads, and various household

Recently, coloring based on nanostructure-light interaction has attracted much attention, because it has many advantages over pigment-based conventional coloring in terms of being non-toxic and highly durable in the environment, and providing high resolution. The asymmetric Fabry-Perot (FP) cavity absorber is the most manufacturable structure among coloring structures because it is simply produced and easily tunable. However, it cannot be applied practically because of the lack of a manufacturing technique that enables simultaneous fabrication of multicolor structures with different heights. Here, the fabrication of colored reflective characters based on various asymmetric FP absorbers with micrometer-scale pixel size are reported. Various cavities with different thicknesses are fabricated in a single step using UV imprint lithography and a simple deposition process. UV/visible spectroscopy is used to characterize the fabricated FP resonator. This absorber demonstrates high absorption, close to 90%, resulting in vivid colors with high resolution of 12700 DPI. It can be potentially used in reflective color displays field, functionalized color decorations, and security color patterns area. It is believed that this study would open up new possibilities for high density color printing in practical industry by introducing cost effective nanoimprint lithography technology.

Rational design of sulfur electrodes is exceptionally important in enabling a high performance lithium/sulfur cell. Constructing a continuous pore structure of the sulfur electrode that enables facile lithium ion transport into the electrode and mitigates the reconstruction of sulfur is a key factor for enhancing the electrochemical performance. Here, we report a three-dimensionally (3D) aligned sulfur electrode cast onto conventional aluminium foil by directional freeze tape casting. The 3D aligned sulfur-graphene oxide (S-GO) electrode consisting of a few micronthick S-GO layers with 10-20 μm interlayer spacings demonstrates significant improvement in the performance of the Li/S cell. Moreover, the freeze tape cast graphene oxide electrode exhibits homogenous reconfiguration behaviour in the polysulfide catholyte cell tests, and demonstrated extended cycling capability with only 4 % decay of the specific capacity over 200 cycles. This work emphasizes the critical importance of proper structural design for sulfurcarbonaceous composite electrodes. TEXT The continued development of electrochemical energy storage and conversion systems (e.g.batteries, fuel cells and supercapacitors) has made a tremendous impact on the infrastructure of modern society. Rechargeable batteries, as represented by lithium ion cells, have been adopted in numerous electronic devices such as cell phones, laptops, smart pads, and various household