One‐Step Construction of N,P‐Codoped Porous Carbon Sheets/CoP Hybrids with Enhanced Lithium and Potassium Storage,Advanced Materials

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One‐Step Construction of N,P‐Codoped Porous Carbon Sheets/CoP Hybrids with Enhanced Lithium and Potassium Storage
Advanced Materials ( IF 27.4 ) Pub Date : 2018-07-13 , DOI: 10.1002/adma.201802310
Jing Bai ₁ , Baojuan Xi ₁ , Hongzhi Mao ₁ , Yue Lin ₂ , Xiaojian Ma ₁ , Jinkui Feng ₃ , Shenglin Xiong _{1,

4}

Affiliation

Despite the desirable advancement in synthesizing transition‐metal phosphides (TMPs)‐based hybrid structures, most methods depend on foreign‐template‐based multistep procedures for tailoring the specific structure. Herein, a self‐template and recrystallization–self‐assembly strategy for the one‐step synthesis of core–shell‐like cobalt phosphide (CoP) nanoparticles embedded into nitrogen and phosphorus codoped porous carbon sheets (CoP⊂NPPCS), is first proposed. Relying on the unusual coordination ability of melamine with metal ions and the cooperative hydrogen bonding of melamine and phytic acid to form a 2D network, a self‐synthesized single precursor can be attained. Importantly, this approach can be easily expanded to synthesize other TMPs⊂NPPCS. Due to the unique compositional and structural characteristics, these CoP⊂NPPCSs manifest outstanding electrochemical performances as anode materials for both lithium‐ and potassium‐ion batteries. The unusual hybrid architecture, the high specific surface area, and porous features make the CoP⊂NPPCS attractive for other potential applications, such as supercapacitors and electrocatalysis.

中文翻译：

增强锂和钾储量的N，P掺杂多孔碳板/ CoP杂物的一步构建

尽管在合成基于过渡金属磷化物（TMP）的杂化结构方面取得了令人鼓舞的进步，但大多数方法仍依赖于基于异物模板的多步程序来定制特定结构。本文首先提出了一种一步合成环己壳状磷化钴（CoP）纳米粒子的自模板和重结晶自组装策略，该纳米粒子嵌入了氮和磷共掺杂的多孔碳片（CoP⊂NPPCS）中。依靠三聚氰胺与金属离子的不同寻常的配位能力以及三聚氰胺与植酸的氢键结合形成二维网络，可以获得自合成的单一前驱体。重要的是，这种方法可以轻松扩展以合成其他TMP TNPPCS。由于独特的成分和结构特征，这些CoP⊂NPPCS作为锂和钾离子电池的负极材料表现出出色的电化学性能。非同寻常的混合结构，高比表面积和多孔特性使CoP⊂NPPCS吸引了其他潜在应用，例如超级电容器和电催化。

更新日期：2018-07-13

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