One-Dimensional Porous TiNb2O7–Carbon Nanofiber Arrays as High-Performance Anode for Lithium Ion Batteries

2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Meili Qi ◽  
Hengxu Wang ◽  
Jinghua Yin
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Electrode Materials ◽  
Carbon Nanofiber ◽  
Lithium Ion ◽  
High Energy ◽  
High Rate ◽  
High Energy Density ◽  
Capacity Retention ◽  
Porous Carbon Nanofiber

Abstract High-energy density lithium ion batteries (LIBs) rely heavily on innovations of electrode materials. Herein, the porous TiNb2O7/carbon nanofibers (TNO/CNFs) have been prepared through the hydrothermal method and electrostatic spinning method as the anode for the Li-ion battery. The structure of porous TNO/CNFs after annealing at 700 °C for 2 h is intact, and lots of holes are found on that surface of nanofibers. Porous TNO/CNFs as the anode show better electrochemical performance than TNO/CNFs, the capacity retention of porous TNO/CNFs is 81.6% (147 mA h/g) with an exceptionally high rate (at 20 C rate). And the capacity retention of porous TNO/CNFs is higher than ≈77% that of TNO/CNFs (112 mA h/g). The superior electrochemical performance of these porous TNO/CNFs can be attributed to the unique porous carbon nanofiber structure: this structure of porous nanofibers not only provides a larger effective area for contact with the electrolyte but also reduces the rate-limiting Li diffusion path, leading to faster charge transfer.

scholarly journals Lithium and Potassium Cations Affect the Performance of Maleamate-Based Organic Anode Materials for Potassium- and Lithium-Ion Batteries

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 3120
Author(s):  
Kefyalew Wagari Guji ◽  
Wen-Chen Chien ◽  
Fu-Ming Wang ◽  
Alagar Ramar ◽  
Endazenaw Bizuneh Chemere ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Electrode Materials ◽  
Low Voltage ◽  
Ethylene Carbonate ◽  
Flexible Structures ◽  
Lithium Ion ◽  
High Energy ◽  
High Rate ◽  
High Energy Density

In this study we prepared potassium-ion batteries (KIBs) displaying high output voltage and, in turn, a high energy density, as replacements for lithium-ion batteries (LIBs). Organic electrode materials featuring void spaces and flexible structures can facilitate the mobility of K+ to enhance the performance of KIBs. We synthesized potassium maleamate (K-MA) from maleamic acid (MA) and applied as an anode material for KIBs and LIBs, with 1 M potassium bis(fluorosulfonyl)imide (KFSI) and 1 M lithium bis(fluorosulfonyl)imide (LiFSI) in a mixture of ethylene carbonate and ethyl methyl carbonate (1:2, v/v) as respective electrolytes. The K-MA_KFSI anode underwent charging/discharging with carbonyl groups at low voltage, due to the K···O bond interaction weaker than Li···O. The K-MA_KFSI and K-MA_LiFSI anode materials delivered a capacity of 172 and 485 mA h g−1 after 200 cycles at 0.1C rate, respectively. K-MA was capable of accepting one K+ in KIB, whereas it could accept two Li+ in a LIB. The superior recoveries performance of K-MA_LiFSI, K-MA_KFSI, and Super P_KFSI at rate of 0.1C were 320, 201, and 105 mA h g−1, respectively. This implies the larger size of K+ can reversibly cycling at high rate.

High energy density lithium ion batteries using Li2.6Co0.4−xCuxN (anode) and Cu0.04V2O5 (cathode) electrode materials

2008 ◽  
Vol 62 (26) ◽  
pp. 4210-4212 ◽  
Author(s):  
Daliang Liu ◽  
Shiying Zhan ◽  
Gang Chen ◽  
Wencheng Pan ◽  
Chunzhong Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Electrode Materials ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Cathode Electrode

scholarly journals High-Rate Layered Cathode of Lithium-Ion Batteries through Regulating Three-Dimensional Agglomerated Structure

Energies ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1602 ◽  
Author(s):  
Jun-Ping Hu ◽  
Hang Sheng ◽  
Qi Deng ◽  
Qiang Ma ◽  
Jun Liu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Three Dimensional ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Energy ◽  
High Rate ◽  
High Energy Density ◽  
High Rate Capability ◽  
Closed Structure ◽  
Short Lifecycle

LiNixCoyMnzO2 (LNCM)-layered materials are considered the most promising cathode for high-energy lithium ion batteries, but suffer from poor rate capability and short lifecycle. In addition, the LiNi1/3Co1/3Mn1/3O2 (NCM 111) is considered one of the most widely used LNCM cathodes because of its high energy density and good safety. Herein, a kind of NCM 111 with semi-closed structure was designed by controlling the amount of urea, which possesses high rate capability and long lifespan, exhibiting 140.9 mAh·g−1 at 0.85 A·g−1 and 114.3 mAh·g−1 at 1.70 A·g−1, respectively. The semi-closed structure is conducive to the infiltration of electrolytes and fast lithium ion-transfer inside the electrode material, thus improving the rate performance of the battery. Our work may provide an effective strategy for designing layered-cathode materials with high rate capability.

scholarly journals Enhanced Roles of Carbon Architectures in High-Performance Lithium-Ion Batteries

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Lu Wang ◽  
Junwei Han ◽  
Debin Kong ◽  
Ying Tao ◽  
Quan-Hong Yang
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
High Performance ◽  
High Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
High Mass

Abstract Lithium-ion batteries (LIBs), which are high-energy-density and low-safety-risk secondary batteries, are underpinned to the rise in electrochemical energy storage devices that satisfy the urgent demands of the global energy storage market. With the aim of achieving high energy density and fast-charging performance, the exploitation of simple and low-cost approaches for the production of high capacity, high density, high mass loading, and kinetically ion-accessible electrodes that maximize charge storage and transport in LIBs, is a critical need. Toward the construction of high-performance electrodes, carbons are promisingly used in the enhanced roles of active materials, electrochemical reaction frameworks for high-capacity noncarbons, and lightweight current collectors. Here, we review recent advances in the carbon engineering of electrodes for excellent electrochemical performance and structural stability, which is enabled by assembled carbon architectures that guarantee sufficient charge delivery and volume fluctuation buffering inside the electrode during cycling. Some specific feasible assembly methods, synergism between structural design components of carbon assemblies, and electrochemical performance enhancement are highlighted. The precise design of carbon cages by the assembly of graphene units is potentially useful for the controlled preparation of high-capacity carbon-caged noncarbon anodes with volumetric capacities over 2100 mAh cm−3. Finally, insights are given on the prospects and challenges for designing carbon architectures for practical LIBs that simultaneously provide high energy densities (both gravimetric and volumetric) and high rate performance.

Synthesis and Application of Carbon-Based Nanocomposites

2013 ◽  
Vol 345 ◽  
pp. 172-175
Author(s):  
Shi Jun Yu ◽  
Xu Han ◽  
Da Wei Yu ◽  
Yan Ming Chen ◽  
Xiao Li Wang
Keyword(s):  
Lithium Ion Batteries ◽  
Electrode Materials ◽  
Lithium Ion ◽  
High Volume ◽  
High Energy ◽  
High Energy Density ◽  
Cycle Performance ◽  
Active Metal ◽  
Electrochemically Active ◽  
Carbon Coated

Lithium ion batteries have been considered as the most effective and practical technologies for electrochemical energy storage. To meet the demand for lithium ion batteries with high energy density and excellent cycle performance, numerous efforts have been devoted to the development of new electrode materials. Electrochemically active metal oxides have emerged as the most promising candidates for the anode materials in the next generation lithium ion batteries duo to their high theoretical capacities and natural abundance. However, the extremely high volume change induced by the alloying reaction with lithium in the bottleneck for the commercialization of these materials. To overcome these obstacles, carbonaceous materials are commonly introduced as matrices to absorb the volume changes and improve the structural stability of the electrode materials. Hence, the present article describes the synthetic pathway of carbon-coated nanomaterials and applications.

scholarly journals Facile Synthesis of FeS@C Particles Toward High-Performance Anodes for Lithium-Ion Batteries

Nanomaterials ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1467
Author(s):  
Xuanni Lin ◽  
Zhuoyi Yang ◽  
Anru Guo ◽  
Dong Liu
Keyword(s):  
Energy Density ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
High Performance ◽  
High Current Density ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Hierarchical Porous

High energy density batteries with high performance are significantly important for intelligent electrical vehicular systems. Iron sulfurs are recognized as one of the most promising anodes for high energy density lithium-ion batteries because of their high theoretical specific capacity and relatively stable electrochemical performance. However, their large-scale commercialized application for lithium-ion batteries are plagued by high-cost and complicated preparation methods. Here, we report a simple and cost-effective method for the scalable synthesis of nanoconfined FeS in porous carbon (defined as FeS@C) as anodes by direct pyrolysis of an iron(III) p-toluenesulfonate precursor. The carbon architecture embedded with FeS nanoparticles provides a rapid electron transport property, and its hierarchical porous structure effectively enhances the ion transport rate, thereby leading to a good electrochemical performance. The resultant FeS@C anodes exhibit high reversible capacity and long cycle life up to 500 cycles at high current density. This work provides a simple strategy for the mass production of FeS@C particles, which represents a critical step forward toward practical applications of iron sulfurs anodes.

Human joint inspired structural design for bendable/foldable/stretchable/twistable battery: achieving multiple deformability

2021 ◽  
Author(s):  
Ao Chen ◽  
Xun Guo ◽  
Shuo Yang ◽  
Guojin Liang ◽  
Qing Li ◽  
...  
Keyword(s):  
Energy Density ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Structural Design ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Wearable Electronics ◽  
Bending Angle ◽  
Human Joint

Flexible lithium ion batteries (LIBs) with high energy density and stable electrochemical performance are regarded as the most promising power for supplying the wearable electronics. Simultaneously achieving small bending angle,...

Improved electrochemical performance of anode materials for high energy density lithium-ion batteries through Sn(SnO2)–SiO2/graphene-based nanocomposites prepared by a facile and low-cost approach

2020 ◽  
Vol 4 (9) ◽  
pp. 4625-4636
Author(s):  
Orapim Namsar ◽  
Thanaphat Autthawong ◽  
Viratchara Laokawee ◽  
Ruttapol Boonprachai ◽  
Mitsutaka Haruta ◽  
...  
Keyword(s):  
Energy Density ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Low Cost ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Cost Approach

Novel anode materials for lithium-ion batteries, nanocomposites of Sn (or SnO2) and SiO2 with graphene-based sheets (GO, rGO and NrGO), were synthesized by a facile and low-cost technique. The capacity of all composites was relatively high as compared to traditional graphite.

Review of Electrochemical Performance of LiNiO2 and their Derivatives as Cathode Material for Lithium-ion Batteries

2014 ◽  
Vol 70 (1) ◽  
Author(s):  
Hafizah Rajaa Shaari ◽  
V. Sethuprakhash
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Electronic Device ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Power Sources ◽  
Portable Power ◽  
High Vapor

Lithium-ion battery which widely used as portable power sources with high energy density is greatly being increased due to the development and popularity of portable electronic device and vehicle. Lithium nickel oxide (LiNiO2) and their derivatives are promising positive cathode materials for next generation of lithium-ion batteries. LiNiO2 potentially offers a higher capacity at about 200 mAh/g. However it is more difficult to synthesized stoichiometric LiNiO2 because of the loss of lithium from host structure during high temperature calcination due the high vapor pressure of lithium and capacity fade when charging up to a high voltage (> 4.0V vs Li+/Li) during deintercalation of lithium ion that affected cycling. The review is focused the electrochemical performance by substitution or effect doping of LiNiO2 and their derivative by other metals as a cathode materials for lithium ion batteries.

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