Cyclic production of biocompatible few-layer graphene ink with in-line shear-mixing for inkjet-printed electrodes and Li-ion energy storage
Cyclic production of biocompatible few-layer graphene ink with in-line shear-mixing for inkjet-printed electrodes and Li-ion energy storage
复制标题
用于喷墨印刷电极和锂离子储能的生物相容性少层石墨烯墨水的循环生产
DOI：
10.1038/s41699-021-00279-0
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发表时间：
2022-01-12
影响因子：
9.7
通讯作者：
Coleman, Jonathan N.
中科院分区：
文献类型：
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作者：
Carey, Tian;Alhourani, Abdelnour;Coleman, Jonathan N.
二维（2D）材料的可扩展生产需要加速其在工业中的应用。在这项工作中，我们提出了一种基于高剪切混合的低成本在线封闭剥离工艺，可大规模地制造出少层石墨烯的水分散体，其Y-w产量接近100%，吞吐量接近8.3 gh（-1）。与传统的基于烧杯的剪切混合相比，在线过程最大限度地减少了基面缺陷，我们将其归因于减少的雷诺数，Re类似于10(5)。我们展示了高导电性石墨烯材料，其导电性高达sigma，类似于1.5 x 10(4) S m(-1)，导致板材电阻低至R-s，类似于2.6 ω平方（-1）（t类似于25 μ m）。该工艺是配制无毒，生物相容性和高浓度(c类似于100 mg ml（-)(1)）油墨的理想方法。我们将石墨烯油墨用于喷墨可打印的导电互连和锂离子电池阳极复合材料，其低倍率锂存储容量为370毫安时g(-1)，接近石墨的理论容量。最后，我们展示了石墨烯墨水与人结肠细胞和人脐静脉内皮细胞在高碳环境下的生物相容性，类似于1 mg ml(-1)，为石墨烯墨水在需要高碳环境下生物相容性的应用（如电子纺织品）提供了一条途径。
The scalable production of two-dimensional (2D) materials is needed to accelerate their adoption to industry. In this work, we present a low-cost in-line and enclosed process of exfoliation based on high-shear mixing to create aqueous dispersions of few-layer graphene, on a large scale with a Y-w similar to 100% yield by weight and throughput of phi similar to 8.3 g h(-1). The in-line process minimises basal plane defects compared to traditional beaker-based shear mixing which we attribute to a reduced Reynolds number, Re similar to 10(5). We demonstrate highly conductive graphene material with conductivities as high as sigma similar to 1.5 x 10(4) S m(-1) leading to sheet-resistances as low as R-s similar to 2.6 Omega square(-1) (t similar to 25 mu m). The process is ideal for formulating non-toxic, biocompatible and highly concentrated (c similar to 100 mg ml(-)(1)) inks. We utilise the graphene inks for inkjet printable conductive interconnects and lithium-ion battery anode composites that demonstrate a low-rate lithium storage capability of 370 mAh g(-1), close to the theoretical capacity of graphite. Finally, we demonstrate the biocompatibility of the graphene inks with human colon cells and human umbilical vein endothelial cells at high c similar to 1 mg ml(-1) facilitating a route for the use of the graphene inks in applications that require biocompatibility at high c such as electronic textiles.