3D Printed Nanocarbon Frameworks for Li‐Ion Battery Cathodes

Abstract

The use of conductive carbon materials in 3D‐printing is attracting growing academic and industrial attention in electrochemical energy storage due to the high customization and on‐demand capabilities of the additive manufacturing. However, typical polymers used in conductive filaments for 3D printing show high resistivity and low compatibility with electrochemical energy applications. Removal of insulating thermoplastics in as‐printed materials is a common post‐printing strategy, however, excessive loss of thermoplastics can weaken the structural integrity. This work reports a two‐step surface engineering methodology for fabrication of 3D‐printed carbon materials for electrochemical applications, incorporating conductive poly(ortho‐phenylenediamine) (PoPD) via electrodeposition. A conductive PoPD effectively enhances the electrochemical activities of 3D‐printed frameworks. When PoPD‐refilled frameworks casted with LiMn2O4 (LMO) composite materials used as battery cathode, it delivers a capacity of 69.1 mAh g−1 at a current density of 0.036 mA cm−2 (≈1.2 C discharge rate) and good cyclability with a retained capacity of 84.4% after 200 cycles at 0.36 mA cm−2. This work provides a pathway for developing electroactive 3D‐printed electrodes particularly with cost‐efficient low‐dimensional carbon materials for aqueous rechargeable Li‐ion batteries.

MXene and MoS3−x Coated 3D‐Printed Hybrid Electrode for Solid‐State Asymmetric Supercapacitor

“…A commercial conductive filament comprises nanocarbon fibers and polylactic acid (PLA) has become very popular for fabricating electrodes for SCs and batteries. [32][33][34][35][36] However, the presence of insulating PLA polymer in the filament matrix results in poor electrochemical properties. Different approaches such as conductive coating, [35] solvent treatment, [37] NaOH treatment, [38] thermal treatment, [39,40] and electrochemical activations [41] were followed to overcome the poor conductivity of the 3D-printed electrodes (3D-PEs).…”

Faceted Crystal Nanoarchitectonics of Organic–Inorganic 3D-Printed Visible-Light Photocatalysts

“…In addition, the XPS peak of P 2p was found at 133.8 eV, which must be attributed to P 5+ in PO 4 3– . Finally, the four deconvoluted peaks assigned at the XPS spectrum of C 1s are assigned to the typical C–C/C–H (284.9 eV), C–O (286.8 eV), and CO (289.7 eV) components of the PLA chains, and the CC (284.3 eV) component of the graphene filler presented at the 3D-printed G/PLA substrate …”

Al2O3/Covalent Organic Framework on 3D-Printed Nanocarbon Electrodes for Enhanced Biomarker Detection

“…1,2 3Dprinting techniques, compared with traditional manufacturing, possess merits of a low cost and speediness and can construct the desired 3D structure producing minimal waste. 3,4 Nowadays, various 3D-printing techniques are widely used in the fields of industry and academic sectors. 5−8 Among different 3D-printing techniques, the fused deposition modeling (FDM) technique has been extensively utilized for its user-friendliness and a simple printing procedure.…”

“…3D-printing has widely emerged in the manufacturing field and is changing traditional manufacturing techniques. , 3D-printing techniques, compared with traditional manufacturing, possess merits of a low cost and speediness and can construct the desired 3D structure producing minimal waste. , Nowadays, various 3D-printing techniques are widely used in the fields of industry and academic sectors. − Among different 3D-printing techniques, the fused deposition modeling (FDM) technique has been extensively utilized for its user-friendliness and a simple printing procedure . The FDM technique used in the electrochemistry field is focused on constructing desired electrodes for sensors, batteries, energy storage, electrochemical catalysis, and so forth. − However, these constructed electrodes are usually covered by an insulating thermoplastic material such as polylactic acid (PLA).…”