14August2018

Nano-Micro Letters

A Review: Enhanced Anodes of Li/Na-Ion Batteries Based on Yolk-Shell Structured Nanomaterials

Cuo Wu1, Xin Tong1, Yuanfei Ai1,  De-Sheng Liu1, Peng Yu1, Jiang Wu1, 2, Zhiming M. Wang1, *

Abstract
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Nano-Micro Lett. (2018) 10: 40

First Online: 17 January 2018 (Review)

DOI:10.1007/s40820-018-0194-4

*Corresponding author. E-mail: xusy@pku.edu.cn; lmpeng@pku.edu.cn

 

Abstract

 


Fig. 1 Graphics illustration of yolk-shell structure: a single shell with single yolk, b double shells with a single yolk, c multiple shells with a single yolk, and d single shell with multiple yolks. Reprinted with permission from Refs. [21, 55, 133]. TEM images of: e single shell with single yolk, f double shells with single yolk, and g single shell with multiple yolks. h SEM, i TEM, j HRTEM and k element mapping images of triple shells with single yolk. Reprinted with permission from Refs. [58, 60, 62, 68]

Lithium-ion batteries (LIBs) and sodium ion batteries (SIBs) have received much attention in energy storage system. In particular, among the great efforts on enhancing the performance of LIBs and SIBs, yolk-shell (YS) structured materials have emerged as a promising strategy towards improving lithium and sodium storage. YS structures possess unique interior void space, large surface area and short diffusion distance, which can solve the problems of volume expansion and aggregation of anode materials, thus enhancing the performance of LIBs and SIBs. In this review, we present a brief overview of recent advances in the novel YS structures of spheres, polyhedrons and rods with controllable morphology and compositions. Enhanced electrochemical performance of LIBs and SIBs based on these novel YS structured-anode materials were discussed in detail.


 

Keywords

Yolk-shell structure; Lithium-ion batteries; Sodium-ion batteries

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