Direct Thermal Charging Cell Using Nickel Hexacyanoferrate (ΙΙ) Anode for Green Recycling of Low-Grade Heat

Kaiyu Mu; Yijie Mu; Xun Wang; Xinya Wu; Chunlin Pang; Yu-Ting Huang; Shien-Ping Feng

doi:10.1021/acsenergylett.2c00057

Direct Thermal Charging Cell Using Nickel Hexacyanoferrate (ΙΙ) Anode for Green Recycling of Low-Grade Heat

Kaiyu Mu, Yijie Mu, Xun Wang, Xinya Wu, Chunlin Pang, Yu-Ting Huang, Shien-Ping Feng^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

19 Citations (Scopus)

Abstract

Direct thermal charging cell (DTCC) converts heat to electricity by thermal charging and electrical discharging at high temperature and self-regeneration at low temperature. In this work, DTCC adopts recyclable NiHCFe^II anode and environmentally friendly KCl electrolyte, realizing the green recycling via chemical treatment for electrodes after long-term operation. The newly designed DTCC achieves the heat-to-electricity conversion efficiency of 3.59% (26.2% of Carnot efficiency) at 70 °C, leaping to the forefront of existing thermoelectrochemical and thermoelectric systems in the low-grade heat regime. The developed system has the advantages of green technology, flexibility, cost-effectiveness, and scalability, making it promising in practical applications for direct energy conversion from low-grade heat sources.

Original language	English
Pages (from-to)	1146-1153
Journal	ACS Energy Letters
Volume	7
Issue number	3
Online published	25 Feb 2022
DOIs	https://doi.org/10.1021/acsenergylett.2c00057
Publication status	Published - 11 Mar 2022

Funding

This work was supported by the General Research Fund of the Research Grants Council of Hong Kong Special Administrative Region, China under Award Number 17206519 and 17203520. The authors acknowledge Prof. K. Shih (The University of Hong Kong) for the support of XRD instrument.

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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title = "Direct Thermal Charging Cell Using Nickel Hexacyanoferrate (ΙΙ) Anode for Green Recycling of Low-Grade Heat",

abstract = "Direct thermal charging cell (DTCC) converts heat to electricity by thermal charging and electrical discharging at high temperature and self-regeneration at low temperature. In this work, DTCC adopts recyclable NiHCFeII anode and environmentally friendly KCl electrolyte, realizing the green recycling via chemical treatment for electrodes after long-term operation. The newly designed DTCC achieves the heat-to-electricity conversion efficiency of 3.59% (26.2% of Carnot efficiency) at 70 °C, leaping to the forefront of existing thermoelectrochemical and thermoelectric systems in the low-grade heat regime. The developed system has the advantages of green technology, flexibility, cost-effectiveness, and scalability, making it promising in practical applications for direct energy conversion from low-grade heat sources.",

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T1 - Direct Thermal Charging Cell Using Nickel Hexacyanoferrate (ΙΙ) Anode for Green Recycling of Low-Grade Heat

AU - Mu, Kaiyu

AU - Mu, Yijie

AU - Wang, Xun

AU - Wu, Xinya

AU - Pang, Chunlin

AU - Huang, Yu-Ting

AU - Feng, Shien-Ping

PY - 2022/3/11

Y1 - 2022/3/11

N2 - Direct thermal charging cell (DTCC) converts heat to electricity by thermal charging and electrical discharging at high temperature and self-regeneration at low temperature. In this work, DTCC adopts recyclable NiHCFeII anode and environmentally friendly KCl electrolyte, realizing the green recycling via chemical treatment for electrodes after long-term operation. The newly designed DTCC achieves the heat-to-electricity conversion efficiency of 3.59% (26.2% of Carnot efficiency) at 70 °C, leaping to the forefront of existing thermoelectrochemical and thermoelectric systems in the low-grade heat regime. The developed system has the advantages of green technology, flexibility, cost-effectiveness, and scalability, making it promising in practical applications for direct energy conversion from low-grade heat sources.

AB - Direct thermal charging cell (DTCC) converts heat to electricity by thermal charging and electrical discharging at high temperature and self-regeneration at low temperature. In this work, DTCC adopts recyclable NiHCFeII anode and environmentally friendly KCl electrolyte, realizing the green recycling via chemical treatment for electrodes after long-term operation. The newly designed DTCC achieves the heat-to-electricity conversion efficiency of 3.59% (26.2% of Carnot efficiency) at 70 °C, leaping to the forefront of existing thermoelectrochemical and thermoelectric systems in the low-grade heat regime. The developed system has the advantages of green technology, flexibility, cost-effectiveness, and scalability, making it promising in practical applications for direct energy conversion from low-grade heat sources.

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U2 - 10.1021/acsenergylett.2c00057

DO - 10.1021/acsenergylett.2c00057

M3 - RGC 21 - Publication in refereed journal

SN - 2380-8195

VL - 7

SP - 1146

EP - 1153

JO - ACS Energy Letters

JF - ACS Energy Letters

IS - 3

ER -

Direct Thermal Charging Cell Using Nickel Hexacyanoferrate (ΙΙ) Anode for Green Recycling of Low-Grade Heat

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GRF: Direct Thermal Charging Cell for Harvesting Body Heat

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Direct Thermal Charging Cell Using Nickel Hexacyanoferrate (ΙΙ) Anode for Green Recycling of Low-Grade Heat

Abstract

Funding

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GRF: Direct Thermal Charging Cell for Harvesting Body Heat

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