scholarly journals Cell-like-carbon-micro-spheres for robust potassium anode

2020 ◽  
Author(s):  
Hongbo Ding ◽  
Jiang Zhou ◽  
Apparao M Rao ◽  
Bingan Lu
Keyword(s):  
Large Scale ◽  
Open Space ◽  
Structural Characteristics ◽  
Low Cost ◽  
High Capacity ◽  
Reversible Capacity ◽  
Synthesis Methods ◽  
Rate Performance ◽  
Long Cycle Life ◽  
New Strategy

Abstract Large-scale low cost synthesis methods for potassium ion battery (PIB) anodes with long cycle life and high capacity has remained challenging. Here, inspired by the structure of a biological cell, biomimetic carbon cells (BCCs) were synthesized and used as PIB anodes. The protruding carbon nanotubes across the BCC wall mimicked the ion transporting channels present in the cell membrane, and enhanced the rate performance of PIBs. In addition, the robust carbon shell of the BCC could protect its overall structure, and the open space inside the BCC could accommodate the volume changes caused by K+ insertion, which greatly improved the stability of PIBs. For the first time, a stable SEI layer is formed on the surface of amorphous carbon. Collectively, the unique structural characteristics of the BCCs resulted in PIBs that showed a high reversible capacity (302 mAh g–1 at 100 mA g–1 and 248 mAh g–1 at 500 mA g–1), excellent cycle stability (reversible capacity of 226 mAh g–1 after 2100 cycles and a continuous running time of more than 15 months at a current density of 100 mA g–1), and an excellent rate performance (160 mAh g–1 at 1 A g–1). This study represents a new strategy for boosting the battery performance, and could pave the way for the next generation battery-powered applications.

Bi/C Nanosheet Microspheres with Open Pore Structure as Anodes for Sodium Ion Batteries with High Capacity, Excellent Rate Performance and Long Cycle Life

2021 ◽  
Author(s):  
Ying Li ◽  
Xia Zhong ◽  
Xianwen Wu ◽  
Mingqi Li ◽  
Wei Zhang ◽  
...  
Keyword(s):  
Pore Structure ◽  
Anode Materials ◽  
High Performance ◽  
Low Cost ◽  
High Capacity ◽  
Cycle Life ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Rate Performance ◽  
Long Cycle Life

To develop high-performance and low-cost anode materials for sodium ion batteries, novel Bi/C nanosheet microspheres with open pore structure (labeled as ops-Bi/C nanosheet microspheres), in which nanosheets are assembled from...

High rate and long cycle life porous carbon nanofiber paper anodes for potassium-ion batteries

2017 ◽  
Vol 5 (36) ◽  
pp. 19237-19244 ◽  
Author(s):  
Xinxin Zhao ◽  
Peixun Xiong ◽  
Jianfang Meng ◽  
Yanqin Liang ◽  
Jiangwei Wang ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Large Scale ◽  
Carbon Nanofiber ◽  
Low Cost ◽  
Potassium Ion ◽  
High Rate ◽  
Rate Performance ◽  
Long Cycle Life ◽  
Porous Carbon Nanofiber ◽  
Energy Storage Applications

Exceptional rate performance of porous carbon nanofiber anodes in potassium-ion batteries was demonstrated, showing that potassium-ion batteries are a promising system for low-cost and large scale energy storage applications.

scholarly journals Dimensional Gradient Structure of CoSe2@CNTs–MXene Anode Assisted by Ether for High-Capacity, Stable Sodium Storage

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Enze Xu ◽  
Pengcheng Li ◽  
Junjie Quan ◽  
Hanwen Zhu ◽  
Li Wang ◽  
...  
Keyword(s):  
Density Functional ◽  
Large Scale ◽  
Low Cost ◽  
High Capacity ◽  
Reversible Capacity ◽  
Cycling Performance ◽  
Gradient Structure ◽  
Matching Problems ◽  
New Generation ◽  
Sodium Storage

AbstractRecently, abundant resources, low-cost sodium-ion batteries are deemed to the new-generation battery in the field of large-scale energy storage. Nevertheless, poor active reaction dynamics, dissolution of intermediates and electrolyte matching problems are significant challenges that need to be solved. Herein, dimensional gradient structure of sheet–tube–dots is constructed with CoSe2@CNTs–MXene. Gradient structure is conducive to fast migration of electrons and ions with the association of ether electrolyte. For half-cell, CoSe2@CNTs–MXene exhibits high initial coulomb efficiency (81.7%) and excellent cycling performance (400 mAh g−1 cycling for 200 times in 2 A g−1). Phase transformation pathway from crystalline CoSe2–Na2Se with Co and then amorphous CoSe2 in the discharge/charge process is also explored by in situ X-ray diffraction. Density functional theory study discloses the CoSe2@CNTs–MXene in ether electrolyte system which contributes to stable sodium storage performance owing to the strong adsorption force from hierarchical structure and weak interaction between electrolyte and electrode interface. For full cell, CoSe2@CNTs–MXene//Na3V2 (PO4)3/C full battery can also afford a competitively reversible capacity of 280 mAh g−1 over 50 cycles. Concisely, profiting from dimensional gradient structure and matched electrolyte of CoSe2@CNTs–MXene hold great application potential for stable sodium storage.

scholarly journals A germanium and zinc chalcogenide as an anode for a high-capacity and long cycle life lithium battery

RSC Advances ◽  
2019 ◽  
Vol 9 (60) ◽  
pp. 35045-35049
Author(s):  
Xu Chen ◽  
Jian Zhou ◽  
Jiarui Li ◽  
Haiyan Luo ◽  
Lin Mei ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Lithium Battery ◽  
Large Scale ◽  
High Capacity ◽  
Lithium Ion ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Long Cycle Life ◽  
Zinc Chalcogenide

High-performance lithium ion batteries are ideal energy storage devices for both grid-scale and large-scale applications.

Large-scale and low cost synthesis of graphene as high capacity anode materials for lithium-ion batteries

Carbon ◽  
2013 ◽  
Vol 64 ◽  
pp. 158-169 ◽  
Author(s):  
Shuangqiang Chen ◽  
Peite Bao ◽  
Linda Xiao ◽  
Guoxiu Wang
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Large Scale ◽  
Low Cost ◽  
High Capacity ◽  
Lithium Ion

scholarly journals A Rechargeable Na/Cl Battery

2020 ◽  
Author(s):  
Hongjie Dai ◽  
Guanzhou Zhu ◽  
Xin Tian ◽  
Hung-Chun Tai ◽  
Yuan-Yao Li ◽  
...  
Keyword(s):  
Electrode Potential ◽  
Low Cost ◽  
High Capacity ◽  
Reversible Capacity ◽  
Sodium Ion ◽  
Sodium Ion Battery ◽  
Standard Electrode Potential ◽  
New Class ◽  
High Reversible Capacity ◽  
First Discharge Capacity

Abstract Sodium is a promising anode material for batteries due to its low standard electrode potential, high abundance and low cost. In this work, we report a new rechargeable ~ 3.5 V sodium ion battery using Na anode, amorphous carbon-nanosphere cathode and a starting electrolyte comprised of AlCl3 in SOCl2 with fluoride-based additives. The battery, exhibiting ultrahigh ~ 2800 mAh/g first discharge capacity, could cycle with a high reversible capacity up to ~ 1000 mAh/g. Through battery cycling, the electrolyte evolved to contain NaCl, various sulfur and chlorine species that supported anode’s Na/Na+ redox and cathode’s chloride/chlorine redox. Fluoride-rich additives were important in forming a solid-electrolyte interface, affording reversibility of the Na anode for a new class of high capacity secondary Na battery.

Synergic antimony–niobium pentoxide nanomeshes for high-rate sodium storage

2018 ◽  
Vol 6 (15) ◽  
pp. 6225-6232 ◽  
Author(s):  
Liu Wang ◽  
Xiaofang Bi ◽  
Shubin Yang
Keyword(s):  
Large Scale ◽  
Niobium Oxide ◽  
High Capacity ◽  
Niobium Pentoxide ◽  
High Rate ◽  
Rate Performance ◽  
Highly Active ◽  
High Rate Performance ◽  
Sodium Storage ◽  
Structurally Stable

Synergic antimony–niobium pentoxide nanomeshes are fabricated on a large scaleviathe controllable decomposition of SbNbO4nanosheets, which are obtained from ultrathin hydrated niobium oxide (Nb2O5·nH2O) layers. Synergizing the merits of highly active Sb and structurally stable Nb2O5, the nanomeshes exhibit enhanced charge-transfer kinetics, thus leading to a high capacity and good high-rate performance for sodium storage.

Large-Scale Synthesis and Lithium Storage Performance of Multilayer TiO2 Nanobelts

2019 ◽  
Vol 72 (6) ◽  
pp. 473 ◽  
Author(s):  
Zongkai Yue ◽  
Yaozu Kang ◽  
Tianyu Mao ◽  
Mengmeng Zhen ◽  
Zhiyong Wang
Keyword(s):  
Large Scale ◽  
Electrode Materials ◽  
Low Cost ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Cycling Performance ◽  
High Specific Surface Area ◽  
Cycle Life ◽  
Lithium Storage ◽  
Tio2 Nanobelts

Titanium dioxide (TiO2) has been widely investigated as the electrode material for lithium ion batteries (LIBs), due to its low cost, small volume expansion, and high environmental friendliness. However, the fading capacity and short cycle life during the cycling process lead to poor cycling performance. Herein, multilayer TiO2 nanobelts with a high specific surface area and with many pores between nanoparticles are constructed via a simple and large-scale approach. Benefiting from the multilayer nanobelt structure, as-prepared TiO2 nanobelts deliver a high reversible capacity, strong cycling stability, and ultra-long cycle life (~185mAhg−1 at 500mAg−1 after 500 cycles) as electrode materials for LIBs.

Cr3+-doped Li3VO4 for enhanced Li+ storage

2019 ◽  
Vol 13 (02) ◽  
pp. 2050005
Author(s):  
Guisheng Liang ◽  
Xingxing Jin ◽  
Cihui Huang ◽  
Lijie Luo ◽  
Yongjun Chen ◽  
...  
Keyword(s):  
Low Cost ◽  
Electronic Conductivity ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Rate Performance ◽  
Orthorhombic Crystal ◽  
Orthorhombic Crystal Structure ◽  
High Specific Capacity ◽  
Safe Working

Li3VO4 has gained significant attention as a promising anode material for lithium-ion batteries owing to its high specific capacity, low cost and safe working potential. Unfortunately, its disappointing electronic conductivity limits its rate performance. To address this problem, a series of Cr[Formula: see text]-doped Li3VO4 compounds are synthesized by solid-state reaction. The obtained Li[Formula: see text]Cr[Formula: see text]V[Formula: see text]O4 compounds ([Formula: see text] and 0.02) have the same orthorhombic crystal structure (Pnm21 space group), suggesting the successful Cr[Formula: see text] doping in Li3VO4. Compared with Li3VO4, Li[Formula: see text]Cr[Formula: see text]V[Formula: see text]O4 exhibits a two orders of magnitude larger electronic conductivity. Additional benefits of the Cr[Formula: see text] doping include the increase of the Li[Formula: see text] diffusion coefficient and the decrease of the particle size. Consequently, Li[Formula: see text]Cr[Formula: see text]V[Formula: see text]O4 displays not only a large reversible capacity (363[Formula: see text]mAh g[Formula: see text] at 60[Formula: see text]mA g[Formula: see text] and superior cyclic stability (86.6% capacity retention after 1000 cycles at 1200[Formula: see text]mA g[Formula: see text] but also decent rate performance (147[Formula: see text]mAh g[Formula: see text] at 1200[Formula: see text]mA g[Formula: see text].

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