Synthesis of hierarchically porous MnO/C composites via a sol–gel process followed by two-step combustion for lithium-ion batteries

2020 ◽  
Vol 44 (28) ◽  
pp. 12307-12316
Author(s):  
Wei Liu ◽  
Daoyan Feng ◽  
Hui Yang ◽  
Xingzhong Guo
Keyword(s):  
Phase Separation ◽  
Lithium Ion Batteries ◽  
Sol Gel ◽  
Lithium Ion ◽  
Hierarchically Porous ◽  
Sol Gel Process

Hierarchically porous MnO/C composites with interconnected macropores and co-continuous skeletons were fabricated via a sol–gel process combined with phase separation, followed by a two-step combustion.

scholarly journals Preparation of a hierarchically porous AlPO4monolith via an epoxide-mediated sol–gel process accompanied by phase separation

2013 ◽  
Vol 14 (4) ◽  
pp. 045007 ◽  
Author(s):  
Wenyan Li ◽  
Yang Zhu ◽  
Xingzhong Guo ◽  
Kazuki Nakanishi ◽  
Kazuyoshi Kanamori ◽  
...  
Keyword(s):  
Phase Separation ◽  
Sol Gel ◽  
Hierarchically Porous ◽  
Sol Gel Process

scholarly journals Synthesis of Hierarchically Porous Metal Oxide Monoliths via Sol–Gel Process Accompanied by Phase Separation From Divalent Metal Salts: A Short Review

2021 ◽  
Vol 3 ◽  
Author(s):  
Xuanming Lu ◽  
Kazuki Nakanishi
Keyword(s):  
Phase Separation ◽  
Metal Oxide ◽  
Sol Gel ◽  
Porous Metal ◽  
Short Review ◽  
Divalent Metal ◽  
Metal Salts ◽  
Hierarchically Porous ◽  
Metal Phosphates ◽  
Sol Gel Process

The sol–gel process accompanied by phase separation is one of the methods to prepare hierarchically porous monoliths, hierarchically porous monolith, which is applicable not only to oxides but also to various materials compositions such as metal phosphates, organic-polymers/carbons, metal-organic frameworks. It is not until recently, however, that progress has been made in the preparation of low-valence metal oxide HPMs, such as those of magnesium, manganese, cobalt, nickel, etc. Due to the difficulty of divalent metal precursors to form homogeneous gels, different approaches from those established for trivalent and tetravalent counterparts have been attempted. This short review introduces the methods and trials in the preparation of metal oxide HPMs from divalent metal salts.

Ultrathin ZrO2-coated separators based on surface sol-gel process for advanced lithium ion batteries

2019 ◽  
Vol 592 ◽  
pp. 117368 ◽  
Author(s):  
Lei Liu ◽  
Yong Wang ◽  
Chenye Gao ◽  
Cheng Yang ◽  
Ke Wang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Sol Gel ◽  
Lithium Ion ◽  
Sol Gel Process

scholarly journals Hierarchically porous monoliths based on low-valence transition metal (Cu, Co, Mn) oxides: gelation and phase separation

2020 ◽  
Vol 7 (11) ◽  
pp. 1656-1666 ◽  
Author(s):  
Xuanming Lu ◽  
Kazuyoshi Kanamori ◽  
Kazuki Nakanishi
Keyword(s):  
Phase Separation ◽  
Sol Gel ◽  
Average Molecular Weight ◽  
Reaction Parameters ◽  
Valence Transition ◽  
Hierarchically Porous ◽  
Sol Gel Process ◽  
Crystalline Metal ◽  
Hydrolysis And Polycondensation ◽  
Mn Oxides

Abstract Hierarchically porous monoliths based on copper (Cu), cobalt (Co) and manganese (Mn) oxides with three-dimensionally (3D) interconnected macropores and open nanopores were prepared using metal bromides as precursors via a sol–gel process accompanied by phase separation. The difficulty of gelation for low-valence metal cation was overcome by introducing a highly electronegative Br atom near to the metal atom to control the rates of hydrolysis and polycondensation. The 3D interconnected macropores were obtained using appropriate polymers to induce phase separation. The domain sizes of macropores and skeletons can be controlled by reaction parameters such as concentration and/or average molecular weight of polymers, and the amount of hydrochloric acid. The crystalline metal oxide monoliths with their 3D interconnected macroporous structure preserved were obtained after heat treatment in air.

LiMn2O4 prepared from waste lithium ion batteries through sol-gel process

2021 ◽  
Vol 868 ◽  
pp. 159222
Author(s):  
Lu Yao ◽  
Yuebin Xi ◽  
Huijuan Han ◽  
Weiwei Li ◽  
Cunjing Wang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Sol Gel ◽  
Lithium Ion ◽  
Sol Gel Process

scholarly journals CuFeO2–NiFe2O4 hybrid electrode for lithium-ion batteries with ultra-stable electrochemical performance

RSC Advances ◽  
2019 ◽  
Vol 9 (47) ◽  
pp. 27257-27263 ◽  
Author(s):  
Jun Young Cheong ◽  
Seokwon Lee ◽  
Jiyoung Lee ◽  
Haeseong Lim ◽  
Su-Ho Cho ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Sol Gel ◽  
Lithium Ion ◽  
Heat Treatments ◽  
High Rate ◽  
Sol Gel Process

Novel NiFe2O4–CuFeO2 heterostructures were synthesized by sol–gel process and subsequent heat treatments, which exhibit excellent long-term high-rate cyclability.

Sign in / Sign up

Export Citation Format

Share Document