Renewable‐Biomolecule‐Based Full Lithium‐Ion Batteries

Abstract

A renewable-biomolecule-based full lithium-ion battery is successfully fabricated for the first time. Naturally derivable emodin and humic acid based electrodes are used as cathode and anode, respectively. The as-assembled batteries exhibit superb specific capacity and substantial operating voltage capable of powering a wearable electronic watch, suggesting the great potential for practical applications with the significant merits of sustainability and biocompatibility.

Multistage redox reactions of conductive-polymer nanostructures with lithium ions: potential for high-performance organic anodes

“…A variety of high-performance anodes based on organic materials has been reported in previous works (Tables S1, S2 and Figure S9 in the Supplementary Information) [41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56] . Although a high specific capacity was reported for organic anodes based on low-molecular-weight compounds (Table S1 in the Supplementary Information) 41-51 , their cycle stability was not studied and determined.…”

“…Nanoparticles of PPy and PTp with carboxy groups (PPy-COOH and PTp-COOH) have specific capacities of 730 and 963 mAh g -1 , respectively, at 20 mA g -1 with stable cycle performances. In recent years, redox-active organic materials based on π-conjugated molecules have attracted much interest as high-performance anodes for lithium-ion batteries [39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56] . The π-conjugated molecules with carboxy substituents, such as phthalic acid and muconic acid, have a reversible redox reaction based on lithium alkoxylation at approximately 1.0 V vs. Li/Li +41,42 .…”

“…At potentials lower than 1.0 V vs. Li/Li + , a redox reaction with the charge and discharge of multiple Li + ions was reported for a π-conjugated system with carboxy substituents [43][44][45][46][47][48][49][50][51] . Although a high specific capacity was found with low-molecular-weight compounds (Table S1 in the Supplementary Information) [41][42][43][44][45][46][47][48][49][50][51] , their solubility and low conductivity caused problems with the cycle stability. A high specific capacity and cycle stability were achieved with polymer-based anodes, such as polydopamine and heterocyclic ladder polymers (Table S2 in the Supplementary Information) [52][53][54][55][56] .…”

Enhanced adsorption of carbonyl molecules on graphene via π-Li-π interaction: a first-principle study

“…Carbonyl compounds as active electrode materials in lithium-ion batteries have been gaining more and more attention due to their high theoretical capacities, molecular structure diversities, environmental friendliness and source abundance [1][2][3][4][5]. According to the redox mechanisms, the organic redox-active compounds can be divided into four types: conducting polymers, organic sulfides, organic free radicals, and carbonyl compounds.…”

Nature‐Inspired Electrochemical Energy‐Storage Materials and Devices

“…[27] In recent years, inspirations have been taken from nature to fabricate biomolecule-based electrode materials from renewable biomass. [28][29][30][31][32] For example, inspired by the electron shuttles functioning in extracellular electron transfer via reversible redox-cycling, man-made electrode materials with similar active functional groups have been explored. [33,34] In our newly reported work, supercapacitor employing redoxactive biomolecule as the faradic-type active material could even obtain a higher energy density than those of previous transition-metal-based supercapacitors.…”