Scalable Synthesis of One‐Dimensional Mesoporous ZnMnO₃ Nanorods with Ultra‐Stable and High Rate Capability for Efficient Lithium Storage

Abstract

The cost-efficient ZnMnO 3 has attracted increasing attention as ap rospective anode candidate fora dvanced lithium-ion batteries (LIBs) owing to its resourceful abundance,large lithium storage capacity andlow operating voltage. However,i ts practical application is still seriously limited by the modest cyclinga nd rate performances. Herein, a facile design to scalable synthesize unique one-dimensional (1D) mesoporousZ nMnO 3 nanorods (ZMO-NRs) composed of nanoscale particles ( % 11 nm) is reported. The 1D mesoporouss tructurea nd nanoscale building blocks of the ZMO-NRs effectively promote the transporto fions/electrons,a ccommodate severe volume changes, and expose more active sites for lithium storage. Benefiting from these appealing structural merits,t he obtained ZMO-NRs anode exhibits excellent rate behavior ( % 454 mAh g À1 at 2Ag À1 )a nd ultralong term cyclic performance ( % 949.7 mAh g À1 even over 500 cycles at 0.5 Ag À1 )f or efficient lithium storage. Additionally,t he LiNi 0.8 Co 0.1 Mn 0.1 O 2 //ZMO-NRs full cell presentsapractical energy density ( % 192.2Whkg À1 )a nd impressive cyclabilityw ith approximately 91 %c apacity retention over 110cycles. This highlightst hat the ZMO-NRs product is a highlyp romising high-rate and stable electrode candidate towardsa dvanced LIBs in electronic devices and sustainable energys torageapplications.[a] Dr.

Substrate‐Enabled Room‐Temperature Electrochemical Deposition of Crystalline ZnMnO3

“…In this context, room temperature deposition of the electroactive material (ZnMnO 3 ) – as realized in the synthesis approach highlighted in this contribution – allows for preserving a high donor density of the ZnO scaffold. Synthesis routes for crystalline ZnMnO 3 reported so far, in contrast, involve high temperature process steps [14,18–26] …”

“…Synthesis routes for crystalline ZnMnO 3 reported so far, in contrast, involve high temperature process steps. [ 14 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ]…”

“…[14] Nevertheless, various wet-chemical synthesis methods yielding nanosized ZnMnO 3 have been reported. [14,[18][19][20][21][22][23][24][25][26] These methods, however, require a thermal post-synthesis treatment at temperatures between 300-650 °C to obtain the crystalline product. Remarkably, crystalline ZnMnO 3 powders featuring a broad size distribution below 200 nm have been synthesized by a hydrothermal approach at a relatively low temperature of 180 °C.…”

Designing Hierarchical Porous ZnO/ZnFe2O4 Hybrid Nanofibers with Robust Core/Shell Heterostructure as Competitive Anodes for Efficient Lithium Storage

“…[ 18,19 ] Meanwhile, a typical porous architecture also acts as a “structural buffer” to minimize the structural damage of electrodes, which is associated with the volumetric change during repeated cycling, especially for the Li‐alloying/dealloying reaction. [ 20 ]…”

A metal–organic framework approach to engineer mesoporous ZnMnO3/C towards enhanced lithium storage

“…A broad peak that appeared at 1.1524 V was related to the reduction of Mn 4+ to Mn 2+ . 39 The peak at 0.8372 V was in line with the decomposition of electrolyte on the electrode surface, while the strong peak at 0.1664 V was related to the reduction of Mn 2+ / Zn 2+ to Mn/Zn in the Li 2 O matrix, and accompanied by the formation of Li-Zn alloy. 40 In the following anodic scanning, a broad peak near 1.2828 V was found, which corresponded to the oxidation of Mn/Zn to MnO/ZnO.…”