In Situ Oriented Mn Deficient ZnMn2O4@C Nanoarchitecture for Durable Rechargeable Aqueous Zinc-Ion Batteries

被引：130

作者：

Islam, Saiful ^{[1
]}

Alfaruqi, Muhammad Hilmy ^{[1
,2
]}

Putro, Dimas Yunianto ^{[1
]}

Park, Sohyun ^{[1
]}

Kim, Seokhun ^{[1
]}

Lee, Seulgi ^{[1
]}

Ahmed, Mohammad Shamsuddin ^{[1
]}

Mathew, Vinod ^{[1
]}

Sun, Yang-Kook ^{[3
]}

Hwang, Jang-Yeon ^{[1
]}

Kim, Jaekook ^{[1
]}

机构：

[1] Chonnam Natl Univ Gwangju, Dept Mat Sci & Engn, Gwangju 500757, South Korea

[2] Sumbawa Univ Technol, Dept Met Engn, Olat Maras Sumbawa 84371, West Nusa Tengg, Indonesia

[3] Hanyang Univ, Dept Energy Engn, Seoul 133791, South Korea

来源：

ADVANCED SCIENCE | 2021年 / 8卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

aqueous Zn‐ ion batteries; in situ grown Mn deficient ZnMn2O4@C; ZnO‐ MnO@C nanocomposite; MANGANESE-DIOXIDE NANOPARTICLES; CATHODE MATERIAL; ENERGY-STORAGE; HIGH-CAPACITY; FACILE SYNTHESIS; PERFORMANCE; MECHANISM; CHEMISTRY; NANORODS; DENSITY;

D O I：

10.1002/advs.202002636

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Manganese (Mn)-based cathode materials have garnered huge research interest for rechargeable aqueous zinc-ion batteries (AZIBs) due to the abundance and low cost of manganese and the plentiful advantages of manganese oxides including their different structures, wide range of phases, and various stoichiometries. A novel in situ generated Mn-deficient ZnMn2O4@C (Mn-d-ZMO@C) nanoarchitecture cathode material from self-assembly of ZnO-MnO@C for rechargeable AZIBs is reported. Analytical techniques confirm the porous and crystalline structure of ZnO-MnO@C and the in situ growth of Mn deficient ZnMn2O4@C. The Zn/Mn-d-ZMO@C cell displays a promising capacity of 194 mAh g(-1) at a current density of 100 mA g(-1) with 84% of capacity retained after 2000 cycles (at 3000 mA g(-1) rate). The improved performance of this cathode originates from in situ orientation, porosity, and carbon coating. Additionally, first-principles calculations confirm the high electronic conductivity of Mn-d-ZMO@C cathode. Importantly, a good capacity retention (86%) is obtained with a year-old cell (after 150 cycles) at 100 mA g(-1) current density. This study, therefore, indicates that the in situ grown Mn-d-ZMO@C nanoarchitecture cathode is a promising material to prepare a durable AZIB.

引用

页数：14

共 72 条

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