Three-dimensional metal scaffold supported bicontinuous silicon battery anodes

Nano Letters
Huigang Zhang, Paul V Braun

Abstract

Silicon-based lithium ion battery anodes are attracting significant attention because of silicon's exceptionally high lithium capacity. However, silicon's large volume change during cycling generally leads to anode pulverization unless the silicon is dispersed throughout a matrix in nanoparticulate form. Because pulverization results in a loss of electric connectivity, the reversible capacity of most silicon anodes dramatically decays within a few cycles. Here we report a three-dimensional (3D) bicontinuous silicon anode formed by depositing a layer of silicon on the surface of a colloidal crystal templated porous nickel metal scaffold, which maintains electrical connectivity during cycling due to the scaffold. The porous metal framework serves to both impart electrical conductivity to the anode and accommodate the large volume change of silicon upon lithiation and delithiation. The initial capacity of the bicontinuous silicon anode is 3568 (silicon basis) and 1450 mAh g(-1) (including the metal framework) at 0.05C. After 100 cycles at 0.3C, 85% of the capacity remains. Compared to a foil-supported silicon film, the 3D bicontinuous silicon anode exhibits significantly improved mechanical stability and cycleability.

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Citations

Sep 6, 2012·Proceedings of the National Academy of Sciences of the United States of America·Alexandru VladPulickel M Ajayan
May 13, 2015·Proceedings of the National Academy of Sciences of the United States of America·Hailong NingPaul V Braun
Mar 10, 2015·ACS Applied Materials & Interfaces·Xinghua Meng, Da Deng
Feb 26, 2015·Nature Communications·Daniela Molina PiperSe-Hee Lee
May 23, 2016·The Journal of Chemical Physics·Bohejin TangAndreas Stein
Sep 19, 2014·Nano Letters·Alireza KohandehghanDavid Mitlin
Dec 14, 2016·ACS Applied Materials & Interfaces·Wen LuoLiqiang Mai
May 10, 2017·ACS Applied Materials & Interfaces·John B CookSarah H Tolbert
Dec 22, 2016·Chemical Communications : Chem Comm·K J Kreder, A Manthiram
Sep 24, 2015·Chemical Society Reviews·Katherine R PhillipsJoanna Aizenberg
Sep 10, 2014·Advanced Materials·Jinyun LiuPaul V Braun
Aug 31, 2018·Advanced Materials·Alvin T L TanA John Hart
Jan 23, 2014·Physical Chemistry Chemical Physics : PCCP·Xiaomei MaLongwu Chen
Oct 2, 2020·Chemical Communications : Chem Comm·Dong-Hyun KimJeong-Hee Choi
Jul 22, 2017·Analytical and Bioanalytical Chemistry·Wei ChenZihui Meng
May 7, 2013·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Jun-Bing FanShutao Wang
Dec 16, 2015·Nanomaterials·Alain Mauger, Christian M Julien
Nov 24, 2016·Science and Technology of Advanced Materials·Gillian CollinsColm O'Dwyer

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