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Browsing by Author "Umirov, Nurzhan"

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A free-standing sulfur/nitrogen-doped carbon nanotube electrode for high- performance lithium/sulfur batteries

Zhao, Yan; Yin, Fuxing; Zhang, Yongguang; Zhang, Chengwei; Mentbayeva, Almagul; Umirov, Nurzhan; Xie, Hongxian; Bakenov, Zhumabay (Nanoscale Research Letters., http://www.nanoscalereslett.com/content/10/1/450, 2015-11-19)

A free-standing sulfur/nitrogen-doped carbon nanotube (S/N-CNT) composite prepared via a simple solution method was first studied as a cathode material for lithium/sulfur batteries. By taking advantage of the self-weavi ...
A free-standing sulfur/nitrogen-doped carbon nanotube electrode for high- performance lithium/sulfur batteries

Zhao, Yan; Yin, Fuxing; Zhang, Yongguang; Zhang, Chengwei; Mentbayeva, Almagul; Umirov, Nurzhan; Xie, Hongxian; Bakenov, Zhumabay (Nanoscale Research Letters a Springer Open Journal (2015), 2015-12)

A free-standing sulfur/nitrogen-doped carbon nanotube (S/N-CNT) composite prepared via a simple solution method was first studied as a cathode material for lithium/sulfur batteries. By taking advantage of the self-weavi ...
Effect of graphene nanosheets on electrochemical performance of Li4Ti5O12 in lithium-ion capacitors

Lu, Chengxing; Wang, Xin; Zhang, Xin; Peng, Huifen; Zhang, Yongguang; Wang, Gongkai; Wang, Zhenkun; Cao, Guanlong; Umirov, Nurzhan; Bakenov, Zhumabay (Ceramics International, 2017-06-01)

Abstract In order to improve the electrochemical performance of lithium titanium oxide, Li4Ti5O12 (LTO), for the use in the lithium-ion capacitors (LICs) application, LTO/graphene composites were synthesized through a solid ...
High performance freestanding composite cathode for lithium-sulfur batteries

Mentbayeva, Almagul; Belgibayeva, Ayaulym; Umirov, Nurzhan; Zhang, Yongguang; Taniguchi, Izumi; Kurmanbayeva, Indira; Bakenov, Zhumabay (Electrochimica Acta, 2016-11-01)

A freestanding sulfur/dehydrogenated polyacrylonitrile/multiwalled carbon nanotube composite (S/DPAN/MWCNT) was prepared by a simple vacuum filtration of a mixture of S/DPAN composite and MWCNT suspensions, and studied as ...
High Performance Zn/LiFePO4 Aqueous Rechargeable Battery for Large Scale Applications

Yesibolati, Nulati; Umirov, Nurzhan; Koishybay, Aibolat; Omarova, Marzhana; Kurmanbayeva, Indira; Zhang, Yongguang; Zhao, Yan; Bakenov, Zhumabay (Electrochimica Acta, 2015-01-10)

Abstract In this work, a novel aqueous rechargeable battery Zn/LiCl-ZnCl2/LiFePO4 has been developed. The electrochemical performance of olivine LiFePO4 positive electrode has been investigated in the structure of this ...
Nickel Hexacyanoferrate Nanoparticles as a Low Cost Cathode Material for Lithium-Ion Batteries

Omarova, Marzhana; Koishybay, Aibolat; Yesibolati, Nulati; Mentbayeva, Almagul; Umirov, Nurzhan; Ismailov, Kairat; Adair, Desmond; Babaa, Moulay-Rachid; Kurmanbayeva, Indira; Bakenov, Zhumabay (Electrochimica Acta, 2015-12-01)

Abstract Potassium nickel hexacyanoferrate KNi[Fe(CN)6] (NiHCF) was synthesized by a simple co-precipitation method and investigated as a cathode material for lithium-ion batteries. The X-ray diffraction and transmission ...
Three-dimensional Zn/LiFePO4 aqueous hybrid-ion battery for renewable energy integration into electrical grids.

Hara, Toru; Antonov, Anton; Umirov, Nurzhan; Bakenov, Zhumabay (2015-11-11)

Renewable energy integration into electrical grids is crucial for energy security, leading to the highly secured communication network, traffic control, industrial activities, etc. Renewable energies are intermittent and ...