Scalable Spray Drying Production of Amorphous V 2 O 5 –EGO 2D Heterostructured Xerogels for High‐Rate and High‐Capacity Aqueous Zinc Ion Batteries

Small ◽  
2022 ◽  
pp. 2105761
Author(s):  
Yubai Zhang ◽  
Jiadong Qin ◽  
Munkhbayar Batmunkh ◽  
Wei Li ◽  
Huaiqin Fu ◽  
...  
Small ◽  
2020 ◽  
Vol 16 (11) ◽  
pp. 1907458 ◽  
Author(s):  
Yi Liu ◽  
Jing Wang ◽  
Yinxiang Zeng ◽  
Jie Liu ◽  
Xiaoqing Liu ◽  
...  

2019 ◽  
Vol 55 (58) ◽  
pp. 8486-8489 ◽  
Author(s):  
Ping Hu ◽  
Ting Zhu ◽  
Jingxuan Ma ◽  
Congcong Cai ◽  
Guangwu Hu ◽  
...  

Porous V2O5 microspheres synthesized by a spray-drying method exhibit an ultrahigh reversible capacity and superior rate and cycling performances in aqueous ZIBs.


2021 ◽  
Vol 14 (02) ◽  
pp. 2150011
Author(s):  
Xiaoyong Fan ◽  
Ruibo Sun ◽  
Jiaxing Han ◽  
Yan Wu ◽  
Lei Gou ◽  
...  

Na3V2(PO[Formula: see text] (NVP) as one typical Na[Formula: see text] super ionic conductor (NASICON) is recognized as an ideal cathode material for ZIBs owing to its promising structural stability that facilitates long cycle, rich vacancies and channels facilitate storing metal ions, high operating potentials to ensure high energy density. However, it still faces poor cyclability and high-rate capacity. Here, three-dimensional networked Na3V2(PO[Formula: see text]/C composite is synthesized by a microemulsion strategy with cetyltrimethyl ammonium bromide (CTAB) as the soft template, and the effect of aging temperature of microemulsion on their morphology and electrochemical performance is investigated. The Na3V2(PO[Formula: see text]/C composite derived from the precursor reacted at 70[Formula: see text]C shows micrometer-size particles assembled by three-dimensional networked nanoplates, facilitating for ions transport and delivers the best electrochemical performance. It displays a high first capacity of 102.2 mAh g[Formula: see text] with 42.3 mAh g[Formula: see text] remained after 5000 stable cycles (capacity retention of 41.4%) at 5 C, a high capacity of 83.2 mAh g[Formula: see text] even the current density is as high as 20 C, which is better than most of the reports.


2019 ◽  
Vol 7 (36) ◽  
pp. 20806-20812 ◽  
Author(s):  
Guoxue Liu ◽  
Huawen Huang ◽  
Ran Bi ◽  
Xue Xiao ◽  
Tianyi Ma ◽  
...  

α-K0.19MnO2 nanotubes with high K+ content as cathodes for zinc-ion batteries show high capacity, excellent rate capability and cycling stability.


2021 ◽  
pp. 138386
Author(s):  
Zhen Xu ◽  
Daobo Li ◽  
Jie Xu ◽  
Junlin Lu ◽  
Dongmei Zhang ◽  
...  

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Shouxiang Ding ◽  
Mingzheng Zhang ◽  
Runzhi Qin ◽  
Jianjun Fang ◽  
Hengyu Ren ◽  
...  

AbstractRecent years have witnessed a booming interest in grid-scale electrochemical energy storage, where much attention has been paid to the aqueous zinc ion batteries (AZIBs). Among various cathode materials for AZIBs, manganese oxides have risen to prominence due to their high energy density and low cost. However, sluggish reaction kinetics and poor cycling stability dictate against their practical application. Herein, we demonstrate the combined use of defect engineering and interfacial optimization that can simultaneously promote rate capability and cycling stability of MnO2 cathodes. β-MnO2 with abundant oxygen vacancies (VO) and graphene oxide (GO) wrapping is synthesized, in which VO in the bulk accelerate the charge/discharge kinetics while GO on the surfaces inhibits the Mn dissolution. This electrode shows a sustained reversible capacity of ~ 129.6 mAh g−1 even after 2000 cycles at a current rate of 4C, outperforming the state-of-the-art MnO2-based cathodes. The superior performance can be rationalized by the direct interaction between surface VO and the GO coating layer, as well as the regulation of structural evolution of β-MnO2 during cycling. The combinatorial design scheme in this work offers a practical pathway for obtaining high-rate and long-life cathodes for AZIBs.


Author(s):  
Yao Rong ◽  
Hongzhe Chen ◽  
Jian Wu ◽  
Zhanhong Yang ◽  
Lie Deng ◽  
...  

Author(s):  
Lei Gou ◽  
Shao-Pan Zhao ◽  
Wen-Qi Wang ◽  
Lei Xu ◽  
Wen-Yan Wang ◽  
...  
Keyword(s):  

2017 ◽  
Vol 4 (11) ◽  
pp. 1700172 ◽  
Author(s):  
Peng Zhang ◽  
Shoufeng Zhang ◽  
Mu He ◽  
Junwei Lang ◽  
Aimin Ren ◽  
...  

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