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Making solar cells using waste from lead batteries


Simple chemistry takes lead from battery waste into solar cells. Copyright Elsevier
Simple chemistry takes lead from battery waste into solar cells. Copyright Elsevier

In a fine demonstration of innovative recycling, the waste lead from traditional lead-acid batteries can recovered and used to make perovskite – the promising material for building efficient solar cells.

A research team in China report this innovative conversion of the debris from old technology into cutting-edge new technology in the journal Nano Energy.

Vast numbers of lead-acid batteries are produced to supply electricity for vehicles, emergency lighting systems, aviation, military applications and much more, but most have a life cycle of only a few years. Lead-rich muddy waste accumulates inside the batteries, creating a serious pollution problem worldwide. Existing methods to recover lead from this waste are complex, energy intensive and expensive. These recycling processes also themselves cause further pollution.

“We have found a way to recycle the battery lead to make perovskite for renewable energy generation without causing secondary pollution,” says researcher Rusen Yang of Xidian University.

The materials called perovskites show great promise as the light-gathering semiconductors needed for a new generation of more efficient solar cells. They share the same arrangement of ions as the natural perovskite mineral, calcium titanate (CaTiO3), but incorporating ions such as lead and chloride into the perovskite arrangement generates a wide range of unnatural perovskites. These new perovskites display many useful properties, especially in their interaction with light.

Yang and his colleagues have come up with two simple routes to recycling the lead in battery waste. One route captures the lead from the cathode region of the battery, while the other grabs the lead produced at the anode. The crucial step in each route involves mixing lead-containing materials with acetic acid. We know a weak solution of acetic acid in everyday life as vinegar. The simple chemical steps make high-purity lead acetate, which the researchers then incorporate into the fabrication of perovskite crystals.

Many researchers have previously explored the potential of lead acetate as a starting material to avoid problems found using other sources of lead to make perovskites. Now Yang and his colleagues have not only confirmed the effectiveness of lead acetate in making good crystals, they have also opened up an excellent and environmentally friendly source of the lead.

A further advantage is that the perovskites produced in the new procedure turn out to be more suitable for solar cells than those made using earlier methods. The crystallization of the perovskite proceeds more smoothly, yielding dense films with high light-harvesting efficiency.

“Our research is still limited to the laboratory,” cautions Zhan'ao Tan of Beijing University of Chemical Technology, another member of the research team. This is the case for much of the research working towards commercial perovskite solar cells. Despite the great potential, most research teams are still trying to improve the stability and efficiency of perovskite solar cells.

The key next step for the researchers is to demonstrate that they can scale up their laboratory methods into a procedure suitable for industry.

Article details:

Yang, R. et al.: “Lead acetate produced from lead-acid battery for efficient perovskite solar cells,” Nano Energy (2020)

Republished by Plato

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Simple chemistry takes lead from battery waste into solar cells. Copyright Elsevier
Simple chemistry takes lead from battery waste into solar cells. Copyright Elsevier

In a fine demonstration of innovative recycling, the waste lead from traditional lead-acid batteries can recovered and used to make perovskite – the promising material for building efficient solar cells.

A research team in China report this innovative conversion of the debris from old technology into cutting-edge new technology in the journal Nano Energy.

Vast numbers of lead-acid batteries are produced to supply electricity for vehicles, emergency lighting systems, aviation, military applications and much more, but most have a life cycle of only a few years. Lead-rich muddy waste accumulates inside the batteries, creating a serious pollution problem worldwide. Existing methods to recover lead from this waste are complex, energy intensive and expensive. These recycling processes also themselves cause further pollution.

“We have found a way to recycle the battery lead to make perovskite for renewable energy generation without causing secondary pollution,” says researcher Rusen Yang of Xidian University.

The materials called perovskites show great promise as the light-gathering semiconductors needed for a new generation of more efficient solar cells. They share the same arrangement of ions as the natural perovskite mineral, calcium titanate (CaTiO3), but incorporating ions such as lead and chloride into the perovskite arrangement generates a wide range of unnatural perovskites. These new perovskites display many useful properties, especially in their interaction with light.

Yang and his colleagues have come up with two simple routes to recycling the lead in battery waste. One route captures the lead from the cathode region of the battery, while the other grabs the lead produced at the anode. The crucial step in each route involves mixing lead-containing materials with acetic acid. We know a weak solution of acetic acid in everyday life as vinegar. The simple chemical steps make high-purity lead acetate, which the researchers then incorporate into the fabrication of perovskite crystals.

Many researchers have previously explored the potential of lead acetate as a starting material to avoid problems found using other sources of lead to make perovskites. Now Yang and his colleagues have not only confirmed the effectiveness of lead acetate in making good crystals, they have also opened up an excellent and environmentally friendly source of the lead.

A further advantage is that the perovskites produced in the new procedure turn out to be more suitable for solar cells than those made using earlier methods. The crystallization of the perovskite proceeds more smoothly, yielding dense films with high light-harvesting efficiency.

“Our research is still limited to the laboratory,” cautions Zhan’ao Tan of Beijing University of Chemical Technology, another member of the research team. This is the case for much of the research working towards commercial perovskite solar cells. Despite the great potential, most research teams are still trying to improve the stability and efficiency of perovskite solar cells.

The key next step for the researchers is to demonstrate that they can scale up their laboratory methods into a procedure suitable for industry.

Article details:

Yang, R. et al.: “Lead acetate produced from lead-acid battery for efficient perovskite solar cells,” Nano Energy (2020)

Source: https://www.materialstoday.com/energy/features/making-solar-cells-using-waste-from-lead-batteries/

Metal

ArcelorMittal launches renewed blast furnace B in Ghent

Luxembourg-based ArcelorMittal, the world’s largest steelmaker, has announced that it has launched blast furnace B at ArcelorMittal Ghent in Belgium.

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Luxembourg-based ArcelorMittal, the world’s largest steelmaker, has announced that it has launched blast furnace B at ArcelorMittal Ghent in Belgium, following a significant investment to renew the furnace. The blast furnace has become one of the world’s most modern and efficient blast furnaces both in terms of productivity and carbon emissions.

The blast furnace B was completely relined and is equipped with state-of-the-art automation systems. The renovation will lower carbon emissions through more efficient fuel consumption. 

ArcelorMittal Belgium is committed to contributing to the EU’s ambitious climate objectives in the framework of The Green Deal. The Ghent relining project will contribute to ArcelorMittal Europe’s commitment to reduce carbon emissions by 30 percent by 2030 compared with 2018.

ArcelorMittal Ghent plans to replace fossil carbon with green carbon and green hydrogen in the blast furnaces. The Torero project, which is scheduled to be commissioned in 2022, allows the company to pre-treat waste wood to produce bio-carbon suitable for the blast furnace process. The company also has two projects running with plastic waste that could be injected into the blast furnaces in the form of powder or gas. ArcelorMittal is also working on the possibility of replacing fossil carbon with hydrogen.

“Everyone gave the best of themselves to make this blast furnace relining a success, in particularly challenging times due to the coronavirus. With our renewed state-of-the-art blast furnace, we have paved the way for a promising sustainable future,” Manfred Van Vlierberghe, CEO of ArcelorMittal Belgium, said.

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Source: https://www.steelorbis.com/steel-news/latest-news/arcelormittal-launches-renewed-blast-furnace-b-in-ghent-1189100.htm

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Metal

India’s AMNS inks MoU with Odisha government for greenfield mill project

India’s ArcelorMittal Nippon Steel Limited (AMNS) has firmed up plans to construct a 12 million mt per annum capacity greenfield steel mill in Odisha.

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India’s ArcelorMittal Nippon Steel Limited (AMNS) has firmed up plans to construct a 12 million mt per annum capacity greenfield steel mill in the eastern Indian state of Odisha, entailing an estimated investment of $7 billion, a company official said on Friday, March 5.

The official said that a memorandum of understanding (MoU) to undertake such a project was signed on Thursday by AMNS chairman Lakshmi Niwas Mittal and Odisha chief minister, Navin Patnaik.

The Odisha government has earmarked suitable land for the AMNS project in the Kendrapara district and the project will be subject to the condition of the government facilitating acquisition of an iron ore block linked to the steel mill, the official said.

It may be noted ArcelorMittal gained its maiden footprint in the Indian steel industry in 2019 acquiring the stressed assets of Essar Steel through the bankruptcy resolution process in collaboration with Japan’s Nippon Steel.

For ArcelorMittal, the latest planned Odisha project will be its fourth attempt to construct a greenfield steel mill project in India.

In 2005, ArcelorMittal had signed a memorandum of understanding (MoU) with the state government of Chhattisgarh and in 2010 it had signed a similar agreement with the government of the southern state of Karnataka for a similar greenfield steel project. In 2006, ArcelorMittal concluded an MoU with the Odisha government for a steel project. All these were never carried forward for various reasons.

The present land to be offered for AMNS’ latest plans at Kendrapara, a coastal district close to Paradip Port, had earlier been acquired for construction of a steel mill by South Korea’s POSCO, which was later abandoned. The land parcel has now been carved out and offered to AMNS along with JSW Limited which has also proposed constructing a greenfield steel mill project in Odisha.

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Source: https://www.steelorbis.com/steel-news/latest-news/indias-amns-inks-mou-with-odisha-government-for-greenfield-mill-project-1189097.htm

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Metal

India’s AMNS inks MoU with Odisha government for greenfield mill project

India’s ArcelorMittal Nippon Steel Limited (AMNS) has firmed up plans to construct a 12 million mt per annum capacity greenfield steel mill in Odisha.

Republished by Plato

Published

on

India’s ArcelorMittal Nippon Steel Limited (AMNS) has firmed up plans to construct a 12 million mt per annum capacity greenfield steel mill in the eastern Indian state of Odisha, entailing an estimated investment of $7 billion, a company official said on Friday, March 5.

The official said that a memorandum of understanding (MoU) to undertake such a project was signed on Thursday by AMNS chairman Lakshmi Niwas Mittal and Odisha chief minister, Navin Patnaik.

The Odisha government has earmarked suitable land for the AMNS project in the Kendrapara district and the project will be subject to the condition of the government facilitating acquisition of an iron ore block linked to the steel mill, the official said.

It may be noted ArcelorMittal gained its maiden footprint in the Indian steel industry in 2019 acquiring the stressed assets of Essar Steel through the bankruptcy resolution process in collaboration with Japan’s Nippon Steel.

For ArcelorMittal, the latest planned Odisha project will be its fourth attempt to construct a greenfield steel mill project in India.

In 2005, ArcelorMittal had signed a memorandum of understanding (MoU) with the state government of Chhattisgarh and in 2010 it had signed a similar agreement with the government of the southern state of Karnataka for a similar greenfield steel project. In 2006, ArcelorMittal concluded an MoU with the Odisha government for a steel project. All these were never carried forward for various reasons.

The present land to be offered for AMNS’ latest plans at Kendrapara, a coastal district close to Paradip Port, had earlier been acquired for construction of a steel mill by South Korea’s POSCO, which was later abandoned. The land parcel has now been carved out and offered to AMNS along with JSW Limited which has also proposed constructing a greenfield steel mill project in Odisha.

Checkout PrimeXBT
Trade with the Official CFD Partners of AC Milan
The Easiest Way to Way To Trade Crypto.
Source: https://www.steelorbis.com/steel-news/latest-news/indias-amns-inks-mou-with-odisha-government-for-greenfield-mill-project-1189097.htm

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