Black phosphorus (BP) is regarded as a promising anode material due to its high theoretical specific capacity and fast charging safety. However, the problems of huge volume expansion and moderate electrical conductivity may restrict its performance. In this work, we present a novel 3D network binary polymer binder synthesized from carboxymethyl cellulose (CMC) and polyethylene oxide (PEO) for adapt to lithium-ion batteries of BP and graphite (G) composite anode (BP-G). There are the following characteristics of the binder: CMC and PEO are crosslinked through intermolecular forces; while CMC and PEO are connected to BP through strong intermolecular forces, respectively; BP and graphite are connected through PC and POC bonds to form composite anode. So as to form a sturdy structure and effectively accommodate the volume expansion of BP during charging-discharging processes, while avoiding loss of electrical contact between electrode components. Accordingly, the lithium-ion battery shown an excellent electrochemical performance, such as a high initial discharge capacity of 1602 mA h g at 0.5 A/g.

中文翻译：

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锂离子电池黑磷负极用高性能羧甲基纤维素-聚环氧乙烷聚合物粘合剂

黑磷（BP）因其高理论比容量和快速充电安全性而被认为是一种有前途的负极材料。然而，巨大的体积膨胀和适度的导电性问题可能会限制其性能。在这项工作中，我们提出了一种由羧甲基纤维素（CMC）和聚环氧乙烷（PEO）合成的新型3D网络二元聚合物粘合剂，用于适应BP和石墨（G）复合负极（BP-G）的锂离子电池。该粘结剂有以下特点： CMC和PEO通过分子间力交联；而CMC和PEO分别通过强大的分子间力与BP连接； BP和石墨通过PC和POC键连接形成复合负极。从而形成坚固的结构，有效容纳BP在充放电过程中的体积膨胀，同时避免电极组件之间电接触的损失。因此，该锂离子电池表现出优异的电化学性能，例如在0.5A/g下的1602mAhg的高初始放电容量。