Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > BNAs improve performance of Li-ion batteries

Fig. (a) are the galvanostatic charge-discharge curves of BNAs integrated electrode at a current density of 25 μA cm-2 . The 1st, 2nd discharge capacities of BNAs integrated electrode are 2471.5, 2311.7 μAh·cm-2 (1861.8, 1741.4 mAh g-1). Fig. (b) reveals the rate capability of BNAs integrated electrode at current densities of 250, 500, 1000, 2000, 5000 μAh·cm-2 respectively. The discharge capacities are 1219, 1128, 972, 678, 430 μAh·cm-2 (918.2, 849.7, 732.2, 510.7, 323.9 mAh g-1), respectively. Fig. (c) shows the cycling stability of BNAs integrated electrodes. Reversible capacity of BNAs integrated electrodes can maintain a capacity of 410 μAh·cm-2 (308.8 mAh g-1, at a current density of 320 μAh·cm-2) after 600 cycles. When the current density was 75 μAh·cm-2, the electrode exhibits a high capacity of 600 μAh·cm-2 (451.9 mAh g-1) after 500 cycles. The above results show that the integration of active material and current collector can greatly improve the capacity, rate ability and cyclical stability of the battery.
CREDIT
Shuang Yuan, Associate Prof. Department of New Energy Science & Engineering, School of Metallurgy Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education) Northeastern University, China Tel: +86-24-8368 1171 E-mail: yuanshuang@ciac.ac.cn Add: Box314, Northeastern University, Shenyang, 110819, China
Fig. (a) are the galvanostatic charge-discharge curves of BNAs integrated electrode at a current density of 25 μA cm-2 . The 1st, 2nd discharge capacities of BNAs integrated electrode are 2471.5, 2311.7 μAh·cm-2 (1861.8, 1741.4 mAh g-1). Fig. (b) reveals the rate capability of BNAs integrated electrode at current densities of 250, 500, 1000, 2000, 5000 μAh·cm-2 respectively. The discharge capacities are 1219, 1128, 972, 678, 430 μAh·cm-2 (918.2, 849.7, 732.2, 510.7, 323.9 mAh g-1), respectively. Fig. (c) shows the cycling stability of BNAs integrated electrodes. Reversible capacity of BNAs integrated electrodes can maintain a capacity of 410 μAh·cm-2 (308.8 mAh g-1, at a current density of 320 μAh·cm-2) after 600 cycles. When the current density was 75 μAh·cm-2, the electrode exhibits a high capacity of 600 μAh·cm-2 (451.9 mAh g-1) after 500 cycles. The above results show that the integration of active material and current collector can greatly improve the capacity, rate ability and cyclical stability of the battery. CREDIT Shuang Yuan, Associate Prof. Department of New Energy Science & Engineering, School of Metallurgy Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education) Northeastern University, China Tel: +86-24-8368 1171 E-mail: yuanshuang@ciac.ac.cn Add: Box314, Northeastern University, Shenyang, 110819, China

Abstract:
Recent research published in a paper in NANO by a group of researchers from Northeastern University investigate the effect of hierarchical Bi2MoO6 nanosheet arrays growing on three-dimensional Ni foam synthesized by one-step template-free route. The obtained BNAs used directly as binder-free integrated electrode for Li-ion batteries (LIBs) exhibits a super high reversible discharge capacity of 2311.7 μAh/cm2, and an excellent cycle stability.

BNAs improve performance of Li-ion batteries

Singapore | Posted on June 27th, 2018

With the rapid development of modern technology, a variety of portable electronic products have become the requirement of time. Li-ion batteries (LIBs) are the optimum selection by virtue of long cycle-life and high energy density properties. Meanwhile, LIBs are viewed as one of the most promising technology in various fields including the defense industry, space technology, electric vehicles and other fields. Nowadays, commercial LIBs mainly use graphite as the anode material. However, graphite can hardly provide the high capacity and high energy density necessary to satisfy the demand required for high power application of the next-generation LIBs due to its low theoretical specific capacity.

Thus, development of high-performance anode materials with high capacity as well as low insertion voltage is urgently needed. In terms of their high capacity, lots of metal oxides have attracted great interest in recent years. However, most metal oxides have low conductivity, high desertion voltage and structural instability, which result in poor rate capability, low power density and poor cycling stability. These shortcomings limit the application of metal oxides as anode materials for LIBs.

Among the numerous metal oxides, Bi2MoO6 with high theoretical capacity (791 mAh/g) and low desertion voltage (<1.0 V) has been widely studied for its excellent photoelectric properties, but, there are few reports on the nanostructure Bi2MoO6 as anode material for LIBs, not to mention the Bi2MoO6 integrated electrode.

Thereafter, developing an effective strategy to prepare the Bi2MoO6 integrated electrode and then exploring their electrochemical performance toward lithium is of great importance. To tackle the issue of low intrinsic conductivity, inferior cycling stability for Bi2MoO6 as anode material, the researchers proclaim an effective strategy to the synthesis of hierarchical Bi2MoO6 nanosheet arrays (BNAs) on the three-dimensional (3D) Ni foam by one-step template-free hydrothermal method. Remarkably, BNAs-integrated electrodes exhibit excellent electrochemical properties (a super high reversible discharge capacity of 2311.7 μAh/cm2, more than 500 times of cyclic stability), when used as the anode electrode for LIBs.

Undoubtedly, this work disclosed a new comprehension for improving the performance of LIBs with metal oxides as the anode material. It can improve the cycle stability and capacity of lithium-ion battery and is expected to be used in portable electronic devices in the future.

###

This work was financially supported by the National College Students Innovation Experiment Program (Grant No. 201710145000284), National Natural Science Foundation of China (Grant Nos. 51425401, 51690161 and 21701022), Fundamental Research Funds for the Central Universities (Grant No. N160903001), and the Project Funded by China Postdoctoral Science Foundation (Grant No. 2017T100181) and the Postdoctoral Science Foundation of Northeastern University (China, Grant No. 20170304).

The co-authors of this paper are Wei-Bin Chen, Li-Na Zhang, Zhi-Jing Ji, Ya-Dan Zheng, Shuang Yuan and Qiang Wang, all from Northeastern University.

####

For more information, please click here

Contacts:
Tay Yu Shan

65-646-65775

Corresponding author is
Shuang Yuan

Copyright © World Scientific

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

For more insight into the research described, readers are invited to access the paper in NANO:

Related News Press

News and information

Nanobiotix: Update on Head and Neck Phase I/II Trial with NBTXR3 and Other program data presented at ImmunoRad 2018 September 20th, 2018

NUS researchers invent new test kit for quick, accurate and low-cost screening of diseases: Test results are denoted by a color change and could be further analyzed by a smartphone app, making it attractive as a point-of-care diagnostic device September 19th, 2018

Silver nanoparticles are toxic for aquatic organisms: A research team at the UPV/EHU-University of the Basque Country has analysed how zebrafish are affected in the long term by exposure to silver particles September 19th, 2018

Leti Announces EU Project to Develop Powerful, Inexpensive Sensors with Photonic Integrated Circuits: REDFINCH Members Initially Targeting Applications for Gas Detection and Analysis For Refineries & Petrochemical Industry and Protein Analysis for Dairy Industry September 19th, 2018

Govt.-Legislation/Regulation/Funding/Policy

Researchers develop microbubble scrubber to destroy dangerous biofilms September 19th, 2018

Researchers managed to prevent the disappearing of quantum information September 14th, 2018

New photonic chip promises more robust quantum computers September 14th, 2018

Could a demon help to create a quantum computer? Physicists implement a version of Maxwell's famous thought experiment for reducing entropy September 5th, 2018

Possible Futures

NUS researchers invent new test kit for quick, accurate and low-cost screening of diseases: Test results are denoted by a color change and could be further analyzed by a smartphone app, making it attractive as a point-of-care diagnostic device September 19th, 2018

Silver nanoparticles are toxic for aquatic organisms: A research team at the UPV/EHU-University of the Basque Country has analysed how zebrafish are affected in the long term by exposure to silver particles September 19th, 2018

Leti Announces EU Project to Develop Powerful, Inexpensive Sensors with Photonic Integrated Circuits: REDFINCH Members Initially Targeting Applications for Gas Detection and Analysis For Refineries & Petrochemical Industry and Protein Analysis for Dairy Industry September 19th, 2018

Researchers develop microbubble scrubber to destroy dangerous biofilms September 19th, 2018

Announcements

Nanobiotix: Update on Head and Neck Phase I/II Trial with NBTXR3 and Other program data presented at ImmunoRad 2018 September 20th, 2018

NUS researchers invent new test kit for quick, accurate and low-cost screening of diseases: Test results are denoted by a color change and could be further analyzed by a smartphone app, making it attractive as a point-of-care diagnostic device September 19th, 2018

Silver nanoparticles are toxic for aquatic organisms: A research team at the UPV/EHU-University of the Basque Country has analysed how zebrafish are affected in the long term by exposure to silver particles September 19th, 2018

Leti Announces EU Project to Develop Powerful, Inexpensive Sensors with Photonic Integrated Circuits: REDFINCH Members Initially Targeting Applications for Gas Detection and Analysis For Refineries & Petrochemical Industry and Protein Analysis for Dairy Industry September 19th, 2018

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

NUS researchers invent new test kit for quick, accurate and low-cost screening of diseases: Test results are denoted by a color change and could be further analyzed by a smartphone app, making it attractive as a point-of-care diagnostic device September 19th, 2018

Silver nanoparticles are toxic for aquatic organisms: A research team at the UPV/EHU-University of the Basque Country has analysed how zebrafish are affected in the long term by exposure to silver particles September 19th, 2018

Researchers develop microbubble scrubber to destroy dangerous biofilms September 19th, 2018

New devices based on rust could reduce excess heat in computers: Physicists explore long-distance information transmission in antiferromagnetic iron oxide September 14th, 2018

Battery Technology/Capacitors/Generators/Piezoelectrics/Thermoelectrics/Energy storage

Leti & EFI Aim to Dramatically Improve Reliability & Speed of Low-Cost Electronic Devices for Autos: Project Will Extend Model Predictive Control Technique to Microcontrollers, Digital Signal Processors and Other Devices that Lack Powerful Computation Capabilities September 18th, 2018

Cannibalistic materials feed on themselves to grow new nanostructures September 1st, 2018

Large scale preparation method of high quality SWNT sponges August 24th, 2018

Virginia Tech researchers develop novel process to 3D print one of the strongest materials on Earth August 23rd, 2018

Grants/Sponsored Research/Awards/Scholarships/Gifts/Contests/Honors/Records

Halas wins American Chemical Society Award in Colloid Chemistry: Rice University nanophotonics pioneer honored for colloid research September 18th, 2018

New photonic chip promises more robust quantum computers September 14th, 2018

A Comprehensive Guide: The Future of Nanotechnology September 13th, 2018

Rice U. lab probes molecular limit of plasmonics: Optical effect detailed in organic molecules with fewer than 50 atoms September 5th, 2018

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project